Use Proxies for ViewModels

Also reworked creation of assignments, motions and users.

client/src/app/core/core-services/autoupdate.service.ts

@@ -97,9 +97,9 @@ export class AutoupdateService {
             elements = elements.concat(this.mapObjectsToBaseModels(collection, autoupdate.changed[collection]));
         });
 
-        const updateSlot = await this.DSUpdateManager.getNewUpdateSlot(this.DS, true);
+        const updateSlot = await this.DSUpdateManager.getNewUpdateSlot(this.DS);
         await this.DS.set(elements, autoupdate.to_change_id);
-        this.DSUpdateManager.commit(updateSlot);
+        this.DSUpdateManager.commit(updateSlot, autoupdate.to_change_id, true);
     }
 
     /**
@@ -130,7 +130,7 @@ export class AutoupdateService {
 
             await this.DS.flushToStorage(autoupdate.to_change_id);
 
-            this.DSUpdateManager.commit(updateSlot);
+            this.DSUpdateManager.commit(updateSlot, autoupdate.to_change_id);
         } else {
             // autoupdate fully in the future. we are missing something!
             this.requestChanges();
@@ -172,7 +172,7 @@ export class AutoupdateService {
         const oldChangeId = this.DS.maxChangeId;
         const response = await this.websocketService.sendAndGetResponse<{}, AutoupdateFormat>('getElements', {});
 
-        const updateSlot = await this.DSUpdateManager.getNewUpdateSlot(this.DS, true);
+        const updateSlot = await this.DSUpdateManager.getNewUpdateSlot(this.DS);
         let allModels: BaseModel[] = [];
         for (const collection of Object.keys(response.changed)) {
             if (this.modelMapper.isCollectionRegistered(collection)) {
@@ -183,7 +183,7 @@ export class AutoupdateService {
         }
 
         await this.DS.set(allModels, response.to_change_id);
-        this.DSUpdateManager.commit(updateSlot);
+        this.DSUpdateManager.commit(updateSlot, response.to_change_id, true);
 
         console.log(`Full update done from ${oldChangeId} to ${response.to_change_id}`);
     }

client/src/app/core/core-services/data-store.service.ts

@@ -3,9 +3,9 @@ import { EventEmitter, Injectable } from '@angular/core';
 import { Observable, Subject } from 'rxjs';
 
 import { BaseModel, ModelConstructor } from '../../shared/models/base/base-model';
-import { BaseRepository } from '../repositories/base-repository';
 import { CollectionStringMapperService } from './collection-string-mapper.service';
 import { Deferred } from '../promises/deferred';
+import { RelationCacheService } from './relation-cache.service';
 import { StorageService } from './storage.service';
 
 /**
@@ -49,7 +49,7 @@ export class UpdateSlot {
     /**
      * @param DS Carries the DataStore: TODO (see below `DataStoreUpdateManagerService.getNewUpdateSlot`)
      */
-    public constructor(public readonly DS: DataStoreService, public readonly initialLoading: boolean) {
+    public constructor(public readonly DS: DataStoreService) {
         this._id = UpdateSlot.ID_COUTNER++;
     }
 
@@ -169,7 +169,10 @@ export class DataStoreUpdateManagerService {
     /**
      * @param mapperService
      */
-    public constructor(private mapperService: CollectionStringMapperService) {}
+    public constructor(
+        private mapperService: CollectionStringMapperService,
+        private relationCacheService: RelationCacheService
+    ) {}
 
     /**
      * Retrieve the current update slot.
@@ -185,13 +188,13 @@ export class DataStoreUpdateManagerService {
      * @param DS The DataStore. This is a hack, becuase we cannot use the DataStore
      * here, because these are cyclic dependencies... --> TODO
      */
-    public async getNewUpdateSlot(DS: DataStoreService, initialLoading: boolean = false): Promise<UpdateSlot> {
+    public async getNewUpdateSlot(DS: DataStoreService): Promise<UpdateSlot> {
         if (this.currentUpdateSlot) {
             const request = new Deferred();
             this.updateSlotRequests.push(request);
             await request;
         }
-        this.currentUpdateSlot = new UpdateSlot(DS, initialLoading);
+        this.currentUpdateSlot = new UpdateSlot(DS);
         return this.currentUpdateSlot;
     }
 
@@ -204,7 +207,7 @@ export class DataStoreUpdateManagerService {
      *
      * @param slot The slot to commit
      */
-    public commit(slot: UpdateSlot): void {
+    public commit(slot: UpdateSlot, changeId: number, resetCache: boolean = false): void {
         if (!this.currentUpdateSlot || !this.currentUpdateSlot.equal(slot)) {
             throw new Error('No or wrong update slot to be finished!');
         }
@@ -212,36 +215,26 @@ export class DataStoreUpdateManagerService {
 
         // notify repositories in two phases
         const repositories = this.mapperService.getAllRepositories();
-        // just commit the update in a repository, if something was changed. Save
+
-        // this information in this mapping. the boolean is not evaluated; if there is an
+        if (resetCache) {
-        const affectedRepos: { [collection: string]: BaseRepository<any, any, any> } = {};
+            this.relationCacheService.reset();
+        }
 
         // Phase 1: deleting and creating of view models (in this order)
         repositories.forEach(repo => {
             const deletedModelIds = slot.getDeletedModelIdsForCollection(repo.collectionString);
             repo.deleteModels(deletedModelIds);
+            this.relationCacheService.registerDeletedModels(repo.collectionString, deletedModelIds);
             const changedModelIds = slot.getChangedModelIdsForCollection(repo.collectionString);
-            repo.changedModels(changedModelIds, slot.initialLoading);
+            repo.changedModels(changedModelIds);
-
+            this.relationCacheService.registerChangedModels(repo.collectionString, changedModelIds, changeId);
-            if (deletedModelIds.length || changedModelIds.length) {
-                affectedRepos[repo.collectionString] = repo;
-            }
         });
 
-        // Phase 2: updating dependencies (deleting ad changing in this order)
+        // Phase 2: updating all repositories
         repositories.forEach(repo => {
-            if (repo.updateDependenciesForDeletedModels(slot.getDeletedModels())) {
+            repo.commitUpdate();
-                affectedRepos[repo.collectionString] = repo;
-            }
-            if (repo.updateDependenciesForChangedModels(slot.getChangedModels())) {
-                affectedRepos[repo.collectionString] = repo;
-            }
         });
 
-        // Phase 3: committing the update to all affected repos. This will trigger all
-        // list observables/subjects to emit the new list.
-        Object.values(affectedRepos).forEach(repo => repo.commitUpdate());
-
         slot.DS.triggerModifiedObservable();
 
         // serve next slot request
@@ -350,7 +343,7 @@ export class DataStoreService {
         // This promise will be resolved with cached datastore.
         const store = await this.storageService.get<JsonStorage>(DataStoreService.cachePrefix + 'DS');
         if (store) {
-            const updateSlot = await this.DSUpdateManager.getNewUpdateSlot(this, true);
+            const updateSlot = await this.DSUpdateManager.getNewUpdateSlot(this);
 
             // There is a store. Deserialize it
             this.jsonStore = store;
@@ -370,7 +363,7 @@ export class DataStoreService {
                 });
             });
 
-            this.DSUpdateManager.commit(updateSlot);
+            this.DSUpdateManager.commit(updateSlot, maxChangeId, true);
         } else {
             await this.clear();
         }

client/src/app/core/core-services/relation-cache.service.spec.ts

@@ -0,0 +1,16 @@
+import { inject, TestBed } from '@angular/core/testing';
+
+import { E2EImportsModule } from '../../../e2e-imports.module';
+import { RelationCacheService } from './relation-cache.service';
+
+describe('RelationCacheService', () => {
+    beforeEach(() => {
+        TestBed.configureTestingModule({
+            imports: [E2EImportsModule],
+            providers: [RelationCacheService]
+        });
+    });
+    it('should be created', inject([RelationCacheService], (service: RelationCacheService) => {
+        expect(service).toBeTruthy();
+    }));
+});

client/src/app/core/core-services/relation-cache.service.ts

@@ -0,0 +1,84 @@
+import { Injectable } from '@angular/core';
+
+export interface CacheChangeIds {
+    [elementId: string]: number;
+}
+
+/**
+ * Handles caching metadata for the relation manager.
+ *
+ * Mainly holds an object mapping element ids to their last updates change ids.
+ * The manager can detect invalid caches, if the change id in the cache's metadata
+ * diverges from the change ids in this service.
+ */
+@Injectable({
+    providedIn: 'root'
+})
+export class RelationCacheService {
+    private cache: {
+        [elementId: string]: number;
+    } = {};
+
+    public constructor() {}
+
+    /**
+     * Reset the cache.
+     */
+    public reset(): void {
+        this.cache = {};
+    }
+
+    /**
+     * Deletes models from this cache.
+     *
+     * @param collection Collection
+     * @param ids Ids from all models in the collection
+     */
+    public registerDeletedModels(collection: string, ids: number[]): void {
+        ids.forEach(id => {
+            const elementId = collection + ':' + id;
+            delete this.cache[elementId];
+        });
+    }
+
+    /**
+     * Adds models to the cache with the given change id.
+     *
+     * @param collection Collection
+     * @param ids Ids from all models in the collection
+     * @param changeId The change id to put into the cache
+     */
+    public registerChangedModels(collection: string, ids: number[], changeId: number): void {
+        ids.forEach(id => {
+            const elementId = collection + ':' + id;
+            this.cache[elementId] = changeId;
+        });
+    }
+
+    /**
+     * Queries the change id for one element.
+     *
+     * @param elementId The element to query.
+     */
+    public query(elementId: string): number | null {
+        return this.cache[elementId] || null;
+    }
+
+    /**
+     * Checks, if all given change ids are valid.
+     */
+    public checkCacheValidity(changeIds: CacheChangeIds): boolean {
+        if (!changeIds) {
+            return false;
+        }
+
+        const elementIds = Object.keys(changeIds);
+        if (!elementIds.length) {
+            return false;
+        }
+
+        return elementIds.every(elementId => {
+            return this.query(elementId) === changeIds[elementId];
+        });
+    }
+}

client/src/app/core/core-services/relation-manager.service.ts

@@ -2,74 +2,35 @@ import { Injectable } from '@angular/core';
 
 import { BaseModel } from 'app/shared/models/base/base-model';
 import { BaseViewModel, ViewModelConstructor } from 'app/site/base/base-view-model';
+import { ModelDescriptor, NestedModelDescriptors } from '../repositories/base-repository';
+import { CacheChangeIds, RelationCacheService } from './relation-cache.service';
 import {
-    BaseOrderedRelation,
     isCustomRelationDefinition,
     isGenericRelationDefinition,
-    isNestedRelationDefinition,
     isNormalRelationDefinition,
     isReverseRelationDefinition,
-    RelationDefinition,
+    RelationDefinition
-    ReverseRelationDefinition
 } from '../definitions/relations';
 import { ViewModelStoreService } from './view-model-store.service';
 
 /**
  * Manages relations between view models. This service is and should only used by the
- * base repository to offload maanging relations between view models.
+ * base repository to offload managing relations between view models.
  */
 @Injectable({
     providedIn: 'root'
 })
 export class RelationManagerService {
-    public constructor(private viewModelStoreService: ViewModelStoreService) {}
+    public constructor(
+        private viewModelStoreService: ViewModelStoreService,
+        private relationCacheService: RelationCacheService
+    ) {}
 
-    /**
+    public handleRelation<M extends BaseModel, V extends BaseViewModel>(
-     * Sorts the array of foreign view models in the given view models for the given relation.
-     */
-    public sortByRelation<V extends BaseViewModel, VForegin extends BaseViewModel>(
-        relation: BaseOrderedRelation<VForegin>,
-        viewModel: V
-    ): void {
-        const order = relation.order;
-        viewModel['_' + relation.ownKey].sort((a: BaseViewModel, b: BaseViewModel) => {
-            if (!order || a[order] === b[order]) {
-                return a.id - b.id;
-            } else {
-                return a[order] - b[order];
-            }
-        });
-    }
-
-    /**
-     * Creates a view model from the given model and model ctor. All dependencies will be
-     * set accorting to relations.
-     */
-    public createViewModel<M extends BaseModel, V extends BaseViewModel>(
-        model: M,
-        modelCtor: ViewModelConstructor<V>,
-        relations: RelationDefinition[],
-        initialLoading: boolean
-    ): V {
-        const viewModel = new modelCtor(model) as V;
-
-        relations.forEach(relation => {
-            this.setRelationsInViewModel(model, viewModel, relation, initialLoading);
-        });
-
-        return viewModel;
-    }
-
-    /**
-     * Sets one foreign view model in the view model according to the relation and the information
-     * from the model.
-     */
-    protected setRelationsInViewModel<M extends BaseModel, V extends BaseViewModel>(
         model: M,
         viewModel: V,
-        relation: RelationDefinition,
+        relation: RelationDefinition
-        initialLoading: boolean
+    ): any {
-    ): void {
         if (isNormalRelationDefinition(relation)) {
             if (
                 (relation.type === 'M2M' || relation.type === 'O2M') &&
@@ -80,22 +41,16 @@ export class RelationManagerService {
                     relation.foreignViewModel,
                     model[relation.ownIdKey]
                 );
-                viewModel['_' + relation.ownKey] = foreignViewModels;
+                this.sortViewModels(foreignViewModels, relation.order);
-                this.sortByRelation(relation, viewModel);
+                return foreignViewModels;
-                if (relation.afterSetRelation) {
-                    relation.afterSetRelation(viewModel, foreignViewModels);
-                }
             } else if (relation.type === 'M2O') {
                 const foreignViewModel = this.viewModelStoreService.get(
                     relation.foreignViewModel,
                     model[relation.ownIdKey]
                 );
-                viewModel['_' + relation.ownKey] = foreignViewModel;
+                return foreignViewModel;
-                if (relation.afterSetRelation) {
-                    relation.afterSetRelation(viewModel, foreignViewModel);
             }
-            }
+        } else if (isReverseRelationDefinition(relation)) {
-        } else if (isReverseRelationDefinition(relation) && !initialLoading) {
             if (relation.type === 'M2M') {
                 const foreignViewModels = this.viewModelStoreService.filter(
                     relation.foreignViewModel,
@@ -104,16 +59,16 @@ export class RelationManagerService {
                         foreignViewModel[relation.foreignIdKey].constructor === Array &&
                         foreignViewModel[relation.foreignIdKey].includes(model.id)
                 );
-                viewModel['_' + relation.ownKey] = foreignViewModels;
+                this.sortViewModels(foreignViewModels, relation.order);
-                this.sortByRelation(relation, viewModel);
+                return foreignViewModels;
             } else if (relation.type === 'O2M') {
                 const foreignViewModels = this.viewModelStoreService.filter(
                     relation.foreignViewModel,
                     foreignViewModel =>
                         foreignViewModel[relation.foreignIdKey] && foreignViewModel[relation.foreignIdKey] === model.id
                 );
-                viewModel['_' + relation.ownKey] = foreignViewModels;
+                this.sortViewModels(foreignViewModels, relation.order);
-                this.sortByRelation(relation, viewModel);
+                return foreignViewModels;
             } else if (relation.type === 'M2O') {
                 const foreignViewModel = this.viewModelStoreService.find(
                     relation.foreignViewModel,
@@ -121,236 +76,156 @@ export class RelationManagerService {
                         _foreignViewModel[relation.foreignIdKey] &&
                         _foreignViewModel[relation.foreignIdKey] === model.id
                 );
-                viewModel['_' + relation.ownKey] = foreignViewModel;
+                return foreignViewModel;
             }
-        } else if (isNestedRelationDefinition(relation)) {
-            const foreignModels = model[relation.ownKey].map(m => new relation.foreignModel(m));
-            const foreignViewModels: BaseViewModel[] = foreignModels.map((foreignModel: BaseModel) =>
-                this.createViewModel(
-                    foreignModel,
-                    relation.foreignViewModel,
-                    relation.relationDefinition || [],
-                    initialLoading
-                )
-            );
-            viewModel['_' + relation.ownKey] = foreignViewModels;
-            this.sortByRelation(relation, viewModel);
         } else if (isGenericRelationDefinition(relation)) {
             const contentObject = this.viewModelStoreService.get<BaseViewModel>(
                 model[relation.ownContentObjectDataKey].collection,
                 model[relation.ownContentObjectDataKey].id
             );
             if (contentObject && relation.isVForeign(contentObject)) {
-                viewModel['_' + relation.ownKey] = contentObject;
+                return contentObject;
             }
         } else if (isCustomRelationDefinition(relation)) {
-            relation.setRelations(model, viewModel);
+            return relation.get(model, viewModel);
         }
     }
 
+    public handleCachedRelation<V extends BaseViewModel>(
+        property: string,
+        target: V,
+        model: BaseModel,
+        viewModel: BaseViewModel,
+        relation: RelationDefinition
+    ): any {
+        let result: any;
+
+        const cacheProperty = '__' + property;
+        const cachePropertyChangeIds = cacheProperty + '_cids';
+        let cached: boolean = cacheProperty in target;
+        let changeIds: CacheChangeIds | null = null;
+        if (cached) {
+            result = target[cacheProperty];
+            changeIds = target[cachePropertyChangeIds];
+        }
+
+        if (!isCustomRelationDefinition(relation)) {
+            if (cached) {
+                cached = this.relationCacheService.checkCacheValidity(changeIds);
+            }
+
+            if (!cached) {
+                result = this.handleRelation(model, viewModel, relation) as BaseViewModel | BaseViewModel[];
+
+                if (result) {
+                    // Cache it:
+                    target[cacheProperty] = result;
+                    const newChangeIds = {};
+                    if (Array.isArray(result)) {
+                        result.forEach(
+                            (_vm: BaseViewModel) =>
+                                (newChangeIds[_vm.elementId] = this.relationCacheService.query(_vm.elementId))
+                        );
+                    } else {
+                        newChangeIds[result.elementId] = this.relationCacheService.query(result.elementId);
+                    }
+                    target[cachePropertyChangeIds] = newChangeIds;
+                } else {
+                    delete target[cacheProperty];
+                }
+            }
+        } else {
+            // Custom relations
+            const obj = relation.getCacheObjectToCheck(viewModel);
+            if (cached) {
+                if (obj && changeIds && changeIds[obj.elementId]) {
+                    cached = this.relationCacheService.query(obj.elementId) === changeIds[obj.elementId];
+                } else {
+                    cached = false;
+                }
+            }
+
+            if (!cached) {
+                result = this.handleRelation(model, viewModel, relation);
+
+                if (result && obj) {
+                    target[cacheProperty] = result;
+                    target[cachePropertyChangeIds] = {};
+                    target[cachePropertyChangeIds][obj.elementId] = this.relationCacheService.query(obj.elementId);
+                } else {
+                    delete target[cachePropertyChangeIds];
+                }
+            }
+        }
+
+        return result;
+    }
+
     /**
-     * Updates an own view model with an deleted model implicit given by the deletedId and
+     * Sorts the array of foreign view models in the given view models for the given relation.
-     * the collection via the relation.
-     *
-     * @return true, if something was updated.
      */
-    public updateSingleDependencyForDeletedModel(
+    public sortViewModels(viewModels: BaseViewModel[], order?: string): void {
-        ownViewModel: BaseViewModel,
+        viewModels.sort((a: BaseViewModel, b: BaseViewModel) => {
-        relation: ReverseRelationDefinition,
+            if (!order || a[order] === b[order]) {
-        deletedId: number
+                return a.id - b.id;
-    ): boolean {
-        // In both relations, the ownViewModel holds an array of foreignViewModels. Try to find the deleted
-        // foreignViewModel in this array and remove it.
-        if (relation.type === 'O2M' || relation.type === 'M2M') {
-            const ownModelArray = <any>ownViewModel['_' + relation.ownKey];
-            if (!ownModelArray) {
-                return false;
-            }
-            // We have the array of foreign view models for our own view model. Put the foreignViewModel
-            // into it (replace or push).
-            const index = ownModelArray.findIndex(foreignViewModel => foreignViewModel.id === deletedId);
-            if (index > -1) {
-                ownModelArray.splice(index, 1);
-                return true;
-            }
-        }
-
-        // The ownViewModel holds one foreignViewModel. Check, if it is the deleted one.
-        else if (relation.type === 'M2O') {
-            if (ownViewModel['_' + relation.ownKey] && ownViewModel['_' + relation.ownKey].id === deletedId) {
-                ownViewModel['_' + relation.ownKey] = null;
-                return true;
-            }
-        }
-
-        return false;
-    }
-
-    /**
-     * Updates an own view model with an implicit given model by the collection and changedId.
-     *
-     * @return true, if something was updated.
-     */
-    public updateSingleDependencyForChangedModel(
-        ownViewModel: BaseViewModel,
-        relation: RelationDefinition,
-        collection: string,
-        changedId: number
-    ): boolean {
-        if (isNormalRelationDefinition(relation)) {
-            if (relation.type === 'M2M' || relation.type === 'O2M') {
-                // For the side of the ownViewModel these relations are the same:
-                // the ownViewModel does have may foreign models and we do have a normal relation (not a
-                // reverse one), we just set the many-part of the relation in the ownViewModel.
-                if (
-                    ownViewModel[relation.ownIdKey] &&
-                    ownViewModel[relation.ownIdKey].constructor === Array &&
-                    ownViewModel[relation.ownIdKey].includes(changedId) // The foreign view model belongs to us.
-                ) {
-                    const foreignViewModel = <any>this.viewModelStoreService.get(collection, changedId);
-                    this.setForeingViewModelInOwnViewModelArray(foreignViewModel, ownViewModel, relation.ownKey);
-                    if (relation.afterDependencyChange) {
-                        relation.afterDependencyChange(ownViewModel, foreignViewModel);
-                    }
-                    return true;
-                }
-            } else if (relation.type === 'M2O') {
-                if (ownViewModel[relation.ownIdKey] === <any>changedId) {
-                    // Check, if this is the matching foreign view model.
-                    const foreignViewModel = this.viewModelStoreService.get(collection, changedId);
-                    ownViewModel['_' + relation.ownKey] = <any>foreignViewModel;
-                    if (relation.afterDependencyChange) {
-                        relation.afterDependencyChange(ownViewModel, foreignViewModel);
-                    }
-                    return true;
-                }
-            }
-        } else if (isReverseRelationDefinition(relation)) {
-            const foreignViewModel = <any>this.viewModelStoreService.get(collection, changedId);
-
-            // The foreign model has one id. Check, if the ownViewModel is the matching view model.
-            // If so, add the foreignViewModel to the array from the ownViewModel (with many foreignViewModels)
-            // If not, check, if the model _was_ in our foreignViewModel array and remove it.
-            if (relation.type === 'O2M') {
-                if (foreignViewModel[relation.foreignIdKey] === ownViewModel.id) {
-                    this.setForeingViewModelInOwnViewModelArray(foreignViewModel, ownViewModel, relation.ownKey);
-                    return true;
             } else {
-                    const ownViewModelArray = <any>ownViewModel['_' + relation.ownKey];
+                return a[order] - b[order];
-                    if (ownViewModelArray) {
-                        // We have the array of foreign view models for our own view model. Remove the foreignViewModel (if it was there).
-                        const index = ownViewModelArray.findIndex(
-                            _foreignViewModel => _foreignViewModel.id === foreignViewModel.id
-                        );
-                        if (index > -1) {
-                            ownViewModelArray.splice(index, 1);
-                            return true;
-                        }
-                    }
-                }
-            }
-
-            // The foreign model should hold an array of ids. If the ownViewModel is in it, the foreignViewModel must
-            // be included into the array from the ownViewModel (with many foreignViewModels).
-            // If not, check, if the model _was_ in our foreignViewModel array and remove it.
-            else if (relation.type === 'M2M') {
-                if (
-                    foreignViewModel[relation.foreignIdKey] &&
-                    foreignViewModel[relation.foreignIdKey].constructor === Array &&
-                    foreignViewModel[relation.foreignIdKey].includes(ownViewModel.id)
-                ) {
-                    this.setForeingViewModelInOwnViewModelArray(foreignViewModel, ownViewModel, relation.ownKey);
-                    return true;
-                } else {
-                    const ownViewModelArray = <any>ownViewModel['_' + relation.ownKey];
-                    if (ownViewModelArray) {
-                        // We have the array of foreign view models for our own view model. Remove the foreignViewModel (if it was there).
-                        const index = ownViewModelArray.findIndex(
-                            _foreignViewModel => _foreignViewModel.id === foreignViewModel.id
-                        );
-                        if (index > -1) {
-                            ownViewModelArray.splice(index, 1);
-                            return true;
-                        }
-                    }
-                }
-            }
-
-            // The foreign model should hold an array of ids. If the ownViewModel is in it, the foreignViewModel is the
-            // one and only matching model for the ownViewModel. If the ownViewModel is not in it, check if the
-            // foreignViewModel _was_ the matching model. If so, set the reference to null.
-            else if (relation.type === 'M2O') {
-                if (
-                    foreignViewModel[relation.foreignIdKey] &&
-                    foreignViewModel[relation.foreignIdKey].constructor === Array &&
-                    foreignViewModel[relation.foreignIdKey].includes(ownViewModel.id)
-                ) {
-                    ownViewModel['_' + relation.ownKey] = foreignViewModel;
-                    return true;
-                } else if (
-                    ownViewModel['_' + relation.ownKey] &&
-                    ownViewModel['_' + relation.ownKey].id === foreignViewModel.id
-                ) {
-                    ownViewModel['_' + relation.ownKey] = null;
-                }
-            }
-        } else if (isNestedRelationDefinition(relation)) {
-            let updated = false;
-            (relation.relationDefinition || []).forEach(nestedRelation => {
-                const nestedViewModels = ownViewModel[relation.ownKey] as BaseViewModel[];
-                nestedViewModels.forEach(nestedViewModel => {
-                    if (
-                        this.updateSingleDependencyForChangedModel(
-                            nestedViewModel,
-                            nestedRelation,
-                            collection,
-                            changedId
-                        )
-                    ) {
-                        updated = true;
             }
         });
+    }
+
+    public createViewModel<M extends BaseModel, V extends BaseViewModel>(
+        model: M,
+        viewModelCtor: ViewModelConstructor<V>,
+        relationsByKey: { [key: string]: RelationDefinition },
+        nestedModelDescriptors: NestedModelDescriptors
+    ): V {
+        let viewModel = new viewModelCtor(model);
+        viewModel = new Proxy(viewModel, {
+            get: (target: V, property) => {
+                let result: any;
+                const _model: M = target.getModel();
+                const relation = typeof property === 'string' ? relationsByKey[property] : null;
+
+                if (property in target) {
+                    const descriptor = Object.getOwnPropertyDescriptor(viewModelCtor.prototype, property);
+                    if (descriptor && descriptor.get) {
+                        result = descriptor.get.bind(viewModel)();
+                    } else {
+                        result = target[property];
+                    }
+                } else if (property in _model) {
+                    result = _model[property];
+                } else if (relation) {
+                    result = this.handleCachedRelation(<any>property, target, _model, viewModel, relation);
+                }
+                return result;
+            }
         });
-            return updated;
-        } else if (isCustomRelationDefinition(relation)) {
-            const foreignViewModel = <any>this.viewModelStoreService.get(collection, changedId);
-            return relation.updateDependency(ownViewModel, foreignViewModel);
-        } else if (isGenericRelationDefinition(relation)) {
-            const foreignModel = <any>this.viewModelStoreService.get(collection, changedId);
-            if (
-                foreignModel &&
-                foreignModel.collectionString === ownViewModel[relation.ownContentObjectDataKey].collection &&
-                foreignModel.id === ownViewModel[relation.ownContentObjectDataKey].id
-            ) {
-                if (relation.isVForeign(foreignModel)) {
-                    ownViewModel['_' + relation.ownKey] = foreignModel;
-                    return true;
-                } else {
-                    console.warn(`The object is not an ${relation.VForeignVerbose}:` + foreignModel);
-                }
-            }
-        }
 
-        return false;
+        // set nested models
-    }
+        (nestedModelDescriptors[model.collectionString] || []).forEach(
+            (modelDescriptor: ModelDescriptor<BaseModel, BaseViewModel>) => {
+                const nestedModels = (model[modelDescriptor.ownKey] || []).map((nestedModel: object) => {
+                    return new modelDescriptor.foreignModel(nestedModel);
+                });
+                const nestedViewModels = nestedModels.map(nestedModel => {
+                    const nestedViewModel = this.createViewModel(
+                        nestedModel,
+                        modelDescriptor.foreignViewModel,
+                        modelDescriptor.relationDefinitionsByKey,
+                        nestedModelDescriptors
+                    );
+                    Object.keys(modelDescriptor.titles || {}).forEach(name => {
+                        nestedViewModel[name] = () => modelDescriptor.titles[name](nestedViewModel);
+                    });
+                    return nestedViewModel;
+                });
+                this.sortViewModels(nestedViewModels, modelDescriptor.order);
 
-    private setForeingViewModelInOwnViewModelArray(
+                viewModel[modelDescriptor.ownKey] = nestedViewModels;
-        foreignViewModel: BaseViewModel,
-        ownViewModel: BaseViewModel,
-        ownKey: string
-    ): void {
-        let ownViewModelArray = <any>ownViewModel['_' + ownKey];
-        if (!ownViewModelArray) {
-            ownViewModel['_' + ownKey] = [];
-            ownViewModelArray = <any>ownViewModel['_' + ownKey]; // get the new reference
-        }
-        // We have the array of foreign view models for our own view model. Put the foreignViewModel
-        // into it (replace or push).
-        const index = ownViewModelArray.findIndex(_foreignViewModel => _foreignViewModel.id === foreignViewModel.id);
-        if (index < 0) {
-            ownViewModelArray.push(foreignViewModel);
-        } else {
-            ownViewModelArray[index] = foreignViewModel;
             }
+        );
+        return viewModel;
     }
 }

client/src/app/core/core-services/time-travel.service.ts

@@ -53,7 +53,7 @@ export class TimeTravelService {
      * @param history the desired point in the history of OpenSlides
      */
     public async loadHistoryPoint(history: History): Promise<void> {
-        const updateSlot = await this.DSUpdateManager.getNewUpdateSlot(this.DS, true);
+        const updateSlot = await this.DSUpdateManager.getNewUpdateSlot(this.DS);
 
         await this.stopTime(history);
         const historyData: HistoryData = await this.getHistoryData(history);
@@ -67,7 +67,7 @@ export class TimeTravelService {
         });
         await this.DS.set(allModels, 0);
 
-        this.DSUpdateManager.commit(updateSlot);
+        this.DSUpdateManager.commit(updateSlot, 1, true);
     }
 
     /**

client/src/app/core/definitions/relations.ts

@@ -1,12 +1,11 @@
-import { BaseModel, ModelConstructor } from 'app/shared/models/base/base-model';
+import { BaseModel } from 'app/shared/models/base/base-model';
 import { BaseViewModel, ViewModelConstructor } from 'app/site/base/base-view-model';
 
 // All "standard" relations.
 export type RelationDefinition<VForeign extends BaseViewModel = BaseViewModel> =
     | NormalRelationDefinition<VForeign>
     | ReverseRelationDefinition<VForeign>
-    | NestedRelationDefinition<VForeign>
+    | CustomRelationDefinition
-    | CustomRelationDefinition<VForeign>
     | GenericRelationDefinition<VForeign>;
 
 interface BaseRelationDefinition<VForeign extends BaseViewModel> {
@@ -39,8 +38,6 @@ interface BaseNormalRelationDefinition<VForeign extends BaseViewModel> extends B
      * the model and view model. E.g. `category_id` in a motion.
      */
     ownIdKey: string;
-
-    afterDependencyChange?: (ownViewModel: BaseViewModel, foreignViewModel: BaseViewModel) => void;
 }
 
 /**
@@ -58,19 +55,16 @@ interface NormalM2MRelationDefinition<VForeign extends BaseViewModel>
     extends BaseNormalRelationDefinition<VForeign>,
         BaseOrderedRelation<VForeign> {
     type: 'M2M';
-    afterSetRelation?: (ownViewModel: BaseViewModel, foreignViewModels: BaseViewModel[]) => void;
 }
 
 interface NormalO2MRelationDefinition<VForeign extends BaseViewModel>
     extends BaseNormalRelationDefinition<VForeign>,
         BaseOrderedRelation<VForeign> {
     type: 'O2M';
-    afterSetRelation?: (ownViewModel: BaseViewModel, foreignViewModels: BaseViewModel[]) => void;
 }
 
 interface NormalM2ORelationDefinition<VForeign extends BaseViewModel> extends BaseNormalRelationDefinition<VForeign> {
     type: 'M2O';
-    afterSetRelation?: (ownViewModel: BaseViewModel, foreignViewModel: BaseViewModel | null) => void;
 }
 
 export type NormalRelationDefinition<VForeign extends BaseViewModel = BaseViewModel> =
@@ -131,29 +125,6 @@ export function isReverseRelationDefinition(obj: RelationDefinition): obj is Rev
     return (relation.type === 'M2O' || relation.type === 'O2M' || relation.type === 'M2M') && !!relation.foreignIdKey;
 }
 
-/**
- * Nested relations in the REST-API. For the most values see
- * `NormalRelationDefinition`.
- */
-export interface NestedRelationDefinition<VForeign extends BaseViewModel> extends BaseOrderedRelation<VForeign> {
-    type: 'nested';
-    ownKey: string;
-
-    /**
-     * The nested relations.
-     */
-    relationDefinition?: RelationDefinition[];
-
-    /**
-     * The matching model for the foreignViewModel.
-     */
-    foreignModel: ModelConstructor<BaseModel>;
-}
-
-export function isNestedRelationDefinition(obj: RelationDefinition): obj is NestedRelationDefinition<BaseViewModel> {
-    return obj.type === 'nested';
-}
-
 interface GenericRelationDefinition<VForeign extends BaseViewModel = BaseViewModel> {
     type: 'generic';
 
@@ -180,21 +151,19 @@ export function isGenericRelationDefinition(obj: RelationDefinition): obj is Gen
 /**
  * A custom relation with callbacks with things todo.
  */
-interface CustomRelationDefinition<VForeign extends BaseViewModel> {
+interface CustomRelationDefinition {
     type: 'custom';
-    foreignViewModel: ViewModelConstructor<VForeign>;
 
     /**
-     * Called, when the view model is created from the model.
+     * The key to access the custom relation.
      */
-    setRelations: (model: BaseModel, viewModel: BaseViewModel) => void;
+    ownKey: string;
 
-    /**
+    get: (model: BaseModel, viewModel: BaseViewModel) => any;
-     * Called, when the dependency was updated.
+
-     */
+    getCacheObjectToCheck: (viewModel: BaseViewModel) => BaseViewModel | null;
-    updateDependency: (ownViewModel: BaseViewModel, foreignViewModel: VForeign) => boolean;
 }
 
-export function isCustomRelationDefinition(obj: RelationDefinition): obj is CustomRelationDefinition<BaseViewModel> {
+export function isCustomRelationDefinition(obj: RelationDefinition): obj is CustomRelationDefinition {
     return obj.type === 'custom';
 }

client/src/app/core/mixins.ts

@@ -0,0 +1,15 @@
+/**
+ * Mixes all own properties of all baseCtors into the derivedCtor.
+ * See https://www.typescriptlang.org/docs/handbook/mixins.html
+ */
+export function applyMixins(derivedCtor: any, baseCtors: any[]): void {
+    baseCtors.forEach(baseCtor => {
+        Object.getOwnPropertyNames(baseCtor.prototype).forEach(name => {
+            Object.defineProperty(
+                derivedCtor.prototype,
+                name,
+                Object.getOwnPropertyDescriptor(baseCtor.prototype, name)
+            );
+        });
+    });
+}

client/src/app/core/pdf-services/pdf-document.service.ts

@@ -507,7 +507,7 @@ export class PdfDocumentService {
      * Cancel the pdf generation
      */
     private cancelPdfCreation(): void {
-        if (!!this.pdfWorker) {
+        if (this.pdfWorker) {
             this.pdfWorker.terminate();
             this.pdfWorker = null;
         }

client/src/app/core/pdf-services/pdf-worker.worker.ts

@@ -35,7 +35,7 @@ function applyLayout(content: any): void {
         if (Array.isArray(section)) {
             applyLayout(section);
         } else {
-            if (!!section.layout) {
+            if (section.layout) {
                 let layout: object;
                 switch (section.layout) {
                     case 'switchColorTableLayout': {
@@ -48,7 +48,7 @@ function applyLayout(content: any): void {
                     }
                 }
 
-                if (!!layout) {
+                if (layout) {
                     section.layout = layout;
                 }
             }
@@ -94,7 +94,7 @@ addEventListener('message', ({ data }) => {
 
     applyLayout(data.doc.content);
 
-    if (!!data.doc.tmpfooter) {
+    if (data.doc.tmpfooter) {
         addPageNumbers(data);
     }
 

client/src/app/core/repositories/agenda/item-repository.service.ts

@@ -15,7 +15,6 @@ import { ItemTitleInformation, ViewItem } from 'app/site/agenda/models/view-item
 import { ViewAssignment } from 'app/site/assignments/models/view-assignment';
 import {
     BaseViewModelWithAgendaItem,
-    IBaseViewModelWithAgendaItem,
     isBaseViewModelWithAgendaItem
 } from 'app/site/base/base-view-model-with-agenda-item';
 import { ViewMotion } from 'app/site/motions/models/view-motion';
@@ -129,8 +128,8 @@ export class ItemRepositoryService extends BaseHasContentObjectRepository<
      *
      * @returns {ViewItem} The modified item extended with the `getSubtitle()`-function.
      */
-    protected createViewModelWithTitles(model: Item, initialLoading: boolean): ViewItem {
+    protected createViewModelWithTitles(model: Item): ViewItem {
-        const viewModel = super.createViewModelWithTitles(model, initialLoading);
+        const viewModel = super.createViewModelWithTitles(model);
         viewModel.getSubtitle = () => this.getSubtitle(viewModel);
         return viewModel;
     }
@@ -153,17 +152,13 @@ export class ItemRepositoryService extends BaseHasContentObjectRepository<
      * @param viewModel the view model that the update is based on
      */
     public async update(update: Partial<Item>, viewModel: ViewItem): Promise<void> {
-        const sendUpdate = new this.baseModelCtor();
+        const sendUpdate = viewModel.getUpdatedModel(update);
-        sendUpdate.patchValues(viewModel.getModel());
-        sendUpdate.patchValues(update);
-
         const clone = JSON.parse(JSON.stringify(sendUpdate));
         clone.item_number = clone._itemNumber;
-        const restPath = `/rest/${sendUpdate.collectionString}/${sendUpdate.id}/`;
+        return await this.dataSend.updateModel(clone);
-        return await this.httpService.put(restPath, clone);
     }
 
-    public async addItemToAgenda(contentObject: IBaseViewModelWithAgendaItem<any>): Promise<Identifiable> {
+    public async addItemToAgenda(contentObject: BaseViewModelWithAgendaItem<any>): Promise<Identifiable> {
         return await this.httpService.post('/rest/agenda/item/', {
             collection: contentObject.collectionString,
             id: contentObject.id

client/src/app/core/repositories/agenda/list-of-speakers-repository.service.ts

@@ -24,6 +24,7 @@ import { ViewTopic } from 'app/site/topics/models/view-topic';
 import { ViewUser } from 'app/site/users/models/view-user';
 import { BaseHasContentObjectRepository } from '../base-has-content-object-repository';
 import { BaseIsListOfSpeakersContentObjectRepository } from '../base-is-list-of-speakers-content-object-repository';
+import { NestedModelDescriptors } from '../base-repository';
 import { CollectionStringMapperService } from '../../core-services/collection-string-mapper.service';
 import { DataStoreService } from '../../core-services/data-store.service';
 import { ItemRepositoryService } from './item-repository.service';
@@ -36,23 +37,30 @@ const ListOfSpeakersRelations: RelationDefinition[] = [
         VForeignVerbose: 'BaseViewModelWithListOfSpeakers',
         ownContentObjectDataKey: 'contentObjectData',
         ownKey: 'contentObject'
-    },
+    }
+];
+
+const ListOfSpeakersNestedModelDescriptors: NestedModelDescriptors = {
+    'agenda/list-of-speakers': [
         {
-        type: 'nested',
             ownKey: 'speakers',
             foreignViewModel: ViewSpeaker,
             foreignModel: Speaker,
             order: 'weight',
-        relationDefinition: [
+            relationDefinitionsByKey: {
-            {
+                user: {
                     type: 'M2O',
                     ownIdKey: 'user_id',
                     ownKey: 'user',
                     foreignViewModel: ViewUser
                 }
-        ]
+            },
+            titles: {
+                getTitle: (viewSpeaker: ViewSpeaker) => viewSpeaker.name
             }
-];
+        }
+    ]
+};
 
 /**
  * Repository service for lists of speakers
@@ -96,7 +104,8 @@ export class ListOfSpeakersRepositoryService extends BaseHasContentObjectReposit
             translate,
             relationManager,
             ListOfSpeakers,
-            ListOfSpeakersRelations
+            ListOfSpeakersRelations,
+            ListOfSpeakersNestedModelDescriptors
         );
     }
 
@@ -116,7 +125,7 @@ export class ListOfSpeakersRepositoryService extends BaseHasContentObjectReposit
             // TODO: This can be resolved with #4738
             const item = this.itemRepo.findByContentObject(titleInformation.contentObjectData);
             if (item) {
-                (<any>titleInformation.title_information).agenda_item_number = item.itemNumber;
+                (<any>titleInformation.title_information).agenda_item_number = item.item_number;
             }
 
             return repo.getListOfSpeakersTitle(titleInformation.title_information);

client/src/app/core/repositories/assignments/assignment-repository.service.ts

@@ -19,6 +19,7 @@ import { ViewMediafile } from 'app/site/mediafiles/models/view-mediafile';
 import { ViewTag } from 'app/site/tags/models/view-tag';
 import { ViewUser } from 'app/site/users/models/view-user';
 import { BaseIsAgendaItemAndListOfSpeakersContentObjectRepository } from '../base-is-agenda-item-and-list-of-speakers-content-object-repository';
+import { NestedModelDescriptors } from '../base-repository';
 import { CollectionStringMapperService } from '../../core-services/collection-string-mapper.service';
 import { DataStoreService } from '../../core-services/data-store.service';
 
@@ -34,46 +35,53 @@ const AssignmentRelations: RelationDefinition[] = [
         ownIdKey: 'attachments_id',
         ownKey: 'attachments',
         foreignViewModel: ViewMediafile
-    },
+    }
+];
+
+const AssignmentNestedModelDescriptors: NestedModelDescriptors = {
+    'assignments/assignment': [
         {
-        type: 'nested',
             ownKey: 'assignment_related_users',
             foreignViewModel: ViewAssignmentRelatedUser,
             foreignModel: AssignmentRelatedUser,
             order: 'weight',
-        relationDefinition: [
+            relationDefinitionsByKey: {
-            {
+                user: {
                     type: 'M2O',
                     ownIdKey: 'user_id',
                     ownKey: 'user',
                     foreignViewModel: ViewUser
                 }
-        ]
+            },
+            titles: {
+                getTitle: (viewAssignmentRelatedUser: ViewAssignmentRelatedUser) =>
+                    viewAssignmentRelatedUser.user ? viewAssignmentRelatedUser.user.getFullName() : ''
+            }
         },
         {
-        type: 'nested',
             ownKey: 'polls',
             foreignViewModel: ViewAssignmentPoll,
             foreignModel: AssignmentPoll,
-        relationDefinition: [
+            relationDefinitionsByKey: {}
+        }
+    ],
+    'assignments/assignment-poll': [
         {
-                type: 'nested',
             ownKey: 'options',
             foreignViewModel: ViewAssignmentPollOption,
             foreignModel: AssignmentPollOption,
             order: 'weight',
-                relationDefinition: [
+            relationDefinitionsByKey: {
-                    {
+                user: {
                     type: 'M2O',
-                        ownIdKey: 'user_id',
+                    ownIdKey: 'candidate_id',
                     ownKey: 'user',
                     foreignViewModel: ViewUser
                 }
-                ]
+            }
         }
     ]
-    }
+};
-];
 
 /**
  * Repository Service for Assignments.
@@ -122,7 +130,8 @@ export class AssignmentRepositoryService extends BaseIsAgendaItemAndListOfSpeake
             translate,
             relationManager,
             Assignment,
-            AssignmentRelations
+            AssignmentRelations,
+            AssignmentNestedModelDescriptors
         );
     }
 

client/src/app/core/repositories/base-has-content-object-repository.ts

@@ -40,9 +40,9 @@ export abstract class BaseHasContentObjectRepository<
     /**
      * @override
      */
-    public changedModels(ids: number[], initialLoading: boolean): void {
+    public changedModels(ids: number[]): void {
         ids.forEach(id => {
-            const v = this.createViewModelWithTitles(this.DS.get(this.collectionString, id), initialLoading);
+            const v = this.createViewModelWithTitles(this.DS.get(this.collectionString, id));
             this.viewModelStore[id] = v;
 
             const contentObject = v.contentObjectData;

client/src/app/core/repositories/base-is-agenda-item-and-list-of-speakers-content-object-repository.ts

@@ -3,10 +3,10 @@ import { ViewItem } from 'app/site/agenda/models/view-item';
 import { ViewListOfSpeakers } from 'app/site/agenda/models/view-list-of-speakers';
 import { BaseProjectableViewModel } from 'app/site/base/base-projectable-view-model';
 import {
-    IBaseViewModelWithAgendaItem,
+    BaseViewModelWithAgendaItem,
     TitleInformationWithAgendaItem
 } from 'app/site/base/base-view-model-with-agenda-item';
-import { IBaseViewModelWithListOfSpeakers } from 'app/site/base/base-view-model-with-list-of-speakers';
+import { BaseViewModelWithListOfSpeakers } from 'app/site/base/base-view-model-with-list-of-speakers';
 import {
     IBaseIsAgendaItemContentObjectRepository,
     isBaseIsAgendaItemContentObjectRepository
@@ -30,14 +30,14 @@ export function isBaseIsAgendaItemAndListOfSpeakersContentObjectRepository(
  * multi-inheritance by implementing both inherit classes again...
  */
 export abstract class BaseIsAgendaItemAndListOfSpeakersContentObjectRepository<
-    V extends BaseProjectableViewModel & IBaseViewModelWithAgendaItem & IBaseViewModelWithListOfSpeakers & T,
+    V extends BaseProjectableViewModel & BaseViewModelWithAgendaItem & BaseViewModelWithListOfSpeakers & T,
     M extends BaseModel,
     T extends TitleInformationWithAgendaItem
 > extends BaseRepository<V, M, T>
     implements
         IBaseIsAgendaItemContentObjectRepository<V, M, T>,
         IBaseIsListOfSpeakersContentObjectRepository<V, M, T> {
-    protected groupRelationsByCollections(): void {
+    protected extendRelations(): void {
         this.relationDefinitions.push({
             type: 'M2O',
             ownIdKey: 'agenda_item_id',
@@ -47,10 +47,9 @@ export abstract class BaseIsAgendaItemAndListOfSpeakersContentObjectRepository<
         this.relationDefinitions.push({
             type: 'M2O',
             ownIdKey: 'list_of_speakers_id',
-            ownKey: 'list_of_speakers',
+            ownKey: 'listOfSpeakers',
             foreignViewModel: ViewListOfSpeakers
         });
-        super.groupRelationsByCollections();
     }
 
     public getAgendaListTitle(titleInformation: T): string {
@@ -87,8 +86,8 @@ export abstract class BaseIsAgendaItemAndListOfSpeakersContentObjectRepository<
         return this.getAgendaSlideTitle(titleInformation);
     };
 
-    protected createViewModelWithTitles(model: M, initialLoading: boolean): V {
+    protected createViewModelWithTitles(model: M): V {
-        const viewModel = super.createViewModelWithTitles(model, initialLoading);
+        const viewModel = super.createViewModelWithTitles(model);
         viewModel.getAgendaListTitle = () => this.getAgendaListTitle(viewModel);
         viewModel.getAgendaListTitleWithoutItemNumber = () => this.getAgendaListTitleWithoutItemNumber(viewModel);
         viewModel.getAgendaSlideTitle = () => this.getAgendaSlideTitle(viewModel);

client/src/app/core/repositories/base-is-agenda-item-content-object-repository.ts

@@ -64,14 +64,13 @@ export abstract class BaseIsAgendaItemContentObjectRepository<
         );
     }
 
-    protected groupRelationsByCollections(): void {
+    protected extendRelations(): void {
         this.relationDefinitions.push({
             type: 'M2O',
             ownIdKey: 'agenda_item_id',
             ownKey: 'item',
             foreignViewModel: ViewItem
         });
-        super.groupRelationsByCollections();
     }
 
     /**
@@ -115,8 +114,8 @@ export abstract class BaseIsAgendaItemContentObjectRepository<
     /**
      * Adds the agenda titles to the viewmodel.
      */
-    protected createViewModelWithTitles(model: M, initialLoading: boolean): V {
+    protected createViewModelWithTitles(model: M): V {
-        const viewModel = super.createViewModelWithTitles(model, initialLoading);
+        const viewModel = super.createViewModelWithTitles(model);
         viewModel.getAgendaListTitle = () => this.getAgendaListTitle(viewModel);
         viewModel.getAgendaListTitleWithoutItemNumber = () => this.getAgendaListTitleWithoutItemNumber(viewModel);
         viewModel.getAgendaSlideTitle = () => this.getAgendaSlideTitle(viewModel);

client/src/app/core/repositories/base-is-list-of-speakers-content-object-repository.ts

@@ -61,14 +61,13 @@ export abstract class BaseIsListOfSpeakersContentObjectRepository<
         );
     }
 
-    protected groupRelationsByCollections(): void {
+    protected extendRelations(): void {
         this.relationDefinitions.push({
             type: 'M2O',
             ownIdKey: 'list_of_speakers_id',
             ownKey: 'list_of_speakers',
             foreignViewModel: ViewListOfSpeakers
         });
-        super.groupRelationsByCollections();
     }
 
     public getListOfSpeakersTitle(titleInformation: T): string {
@@ -82,8 +81,8 @@ export abstract class BaseIsListOfSpeakersContentObjectRepository<
     /**
      * Adds the list of speakers titles to the view model
      */
-    protected createViewModelWithTitles(model: M, initialLoading: boolean): V {
+    protected createViewModelWithTitles(model: M): V {
-        const viewModel = super.createViewModelWithTitles(model, initialLoading);
+        const viewModel = super.createViewModelWithTitles(model);
         viewModel.getListOfSpeakersTitle = () => this.getListOfSpeakersTitle(viewModel);
         viewModel.getListOfSpeakersSlideTitle = () => this.getListOfSpeakersSlideTitle(viewModel);
         return viewModel;

client/src/app/core/repositories/base-repository.ts

@@ -7,18 +7,28 @@ import { BaseModel, ModelConstructor } from '../../shared/models/base/base-model
 import { BaseViewModel, TitleInformation, ViewModelConstructor } from '../../site/base/base-view-model';
 import { CollectionStringMapperService } from '../core-services/collection-string-mapper.service';
 import { DataSendService } from '../core-services/data-send.service';
-import { CollectionIds, DataStoreService } from '../core-services/data-store.service';
+import { DataStoreService } from '../core-services/data-store.service';
 import { Identifiable } from '../../shared/models/base/identifiable';
 import { OnAfterAppsLoaded } from '../definitions/on-after-apps-loaded';
 import { RelationManagerService } from '../core-services/relation-manager.service';
-import {
+import { RelationDefinition, ReverseRelationDefinition } from '../definitions/relations';
-    isNormalRelationDefinition,
-    isReverseRelationDefinition,
-    RelationDefinition,
-    ReverseRelationDefinition
-} from '../definitions/relations';
 import { ViewModelStoreService } from '../core-services/view-model-store.service';
 
+export interface ModelDescriptor<M extends BaseModel, V extends BaseViewModel> {
+    relationDefinitionsByKey: { [key: string]: RelationDefinition };
+    ownKey: string;
+    foreignViewModel: ViewModelConstructor<V>;
+    foreignModel: ModelConstructor<M>;
+    order?: string;
+    titles?: {
+        [key: string]: (viewModel: V) => string;
+    };
+}
+
+export interface NestedModelDescriptors {
+    [collection: string]: ModelDescriptor<BaseModel, BaseViewModel>[];
+}
+
 export abstract class BaseRepository<V extends BaseViewModel & T, M extends BaseModel, T extends TitleInformation>
     implements OnAfterAppsLoaded, Collection {
     /**
@@ -89,6 +99,8 @@ export abstract class BaseRepository<V extends BaseViewModel & T, M extends Base
 
     protected reverseRelationsByCollection: { [collection: string]: ReverseRelationDefinition<BaseViewModel>[] } = {};
 
+    protected relationsByKey: { [key: string]: RelationDefinition<BaseViewModel> } = {};
+
     /**
      * The view model ctor of the encapsulated view model.
      */
@@ -111,12 +123,16 @@ export abstract class BaseRepository<V extends BaseViewModel & T, M extends Base
         protected translate: TranslateService,
         protected relationManager: RelationManagerService,
         protected baseModelCtor: ModelConstructor<M>,
-        protected relationDefinitions: RelationDefinition<BaseViewModel>[] = []
+        protected relationDefinitions: RelationDefinition<BaseViewModel>[] = [],
+        protected nestedModelDescriptors: NestedModelDescriptors = {}
     ) {
         this._collectionString = baseModelCtor.COLLECTIONSTRING;
 
-        this.groupRelationsByCollections();
+        this.extendRelations();
-        this.buildReverseRelationsGrouping();
+
+        this.relationDefinitions.forEach(relation => {
+            this.relationsByKey[relation.ownKey] = relation;
+        });
 
         // All data is piped through an auditTime of 1ms. This is to prevent massive
         // updates, if e.g. an autoupdate with a lot motions come in. The result is just one
@@ -130,55 +146,7 @@ export abstract class BaseRepository<V extends BaseViewModel & T, M extends Base
         this.languageCollator = new Intl.Collator(this.translate.currentLang);
     }
 
-    /**
+    protected extendRelations(): void {}
-     * Reorders the relations to provide faster access.
-     */
-    protected groupRelationsByCollections(): void {
-        this.relationDefinitions.forEach(relation => {
-            this._groupRelationsByCollections(relation, relation);
-        });
-    }
-
-    /**
-     * Recursive function for reorderung the relations.
-     */
-    protected _groupRelationsByCollections(relation: RelationDefinition, baseRelation: RelationDefinition): void {
-        if (relation.type === 'nested') {
-            (relation.relationDefinition || []).forEach(nestedRelation => {
-                this._groupRelationsByCollections(nestedRelation, baseRelation);
-            });
-        } else if (
-            relation.type === 'M2O' ||
-            relation.type === 'M2M' ||
-            relation.type === 'O2M' ||
-            relation.type === 'custom'
-        ) {
-            const collection = relation.foreignViewModel.COLLECTIONSTRING;
-            if (!this.relationsByCollection[collection]) {
-                this.relationsByCollection[collection] = [];
-            }
-            this.relationsByCollection[collection].push(baseRelation);
-        } else if (relation.type === 'generic') {
-            relation.possibleModels.forEach(ctor => {
-                const collection = ctor.COLLECTIONSTRING;
-                if (!this.relationsByCollection[collection]) {
-                    this.relationsByCollection[collection] = [];
-                }
-                this.relationsByCollection[collection].push(baseRelation);
-            });
-        }
-    }
-
-    protected buildReverseRelationsGrouping(): void {
-        Object.keys(this.relationsByCollection).forEach(collection => {
-            const reverseRelations = this.relationsByCollection[collection].filter(relation =>
-                isReverseRelationDefinition(relation)
-            ) as ReverseRelationDefinition<BaseViewModel>[];
-            if (reverseRelations.length) {
-                this.reverseRelationsByCollection[collection] = reverseRelations;
-            }
-        });
-    }
 
     public onAfterAppsLoaded(): void {
         this.baseViewModelCtor = this.collectionStringMapperService.getViewModelConstructor(this.collectionString);
@@ -214,12 +182,9 @@ export abstract class BaseRepository<V extends BaseViewModel & T, M extends Base
      *
      * @param ids All model ids.
      */
-    public changedModels(ids: number[], initialLoading: boolean): void {
+    public changedModels(ids: number[]): void {
         ids.forEach(id => {
-            this.viewModelStore[id] = this.createViewModelWithTitles(
+            this.viewModelStore[id] = this.createViewModelWithTitles(this.DS.get(this.collectionString, id));
-                this.DS.get(this.collectionString, id),
-                initialLoading
-            );
             this.updateViewModelObservable(id);
         });
     }
@@ -228,115 +193,20 @@ export abstract class BaseRepository<V extends BaseViewModel & T, M extends Base
      * After creating a view model, all functions for models form the repo
      * are assigned to the new view model.
      */
-    protected createViewModelWithTitles(model: M, initialLoading: boolean): V {
+    protected createViewModelWithTitles(model: M): V {
         const viewModel = this.relationManager.createViewModel(
             model,
             this.baseViewModelCtor,
-            this.relationDefinitions,
+            this.relationsByKey,
-            initialLoading
+            this.nestedModelDescriptors
         );
+
         viewModel.getTitle = () => this.getTitle(viewModel);
         viewModel.getListTitle = () => this.getListTitle(viewModel);
         viewModel.getVerboseName = this.getVerboseName;
         return viewModel;
     }
 
-    /**
-     * Updates all models in this repository with all changed models.
-     *
-     * @param changedModels A mapping of collections to ids of all changed models.
-     * @returns if at least one model was affected.
-     */
-    public updateDependenciesForChangedModels(changedModels: CollectionIds): boolean {
-        if (!this.relationDefinitions.length) {
-            return false;
-        }
-
-        // Get all viewModels from this repo once.
-        const ownViewModels = this.getViewModelList();
-        const updatedIds = [];
-        Object.keys(changedModels).forEach(collection => {
-            const dependencyChanged: boolean = Object.keys(this.relationsByCollection).includes(collection);
-            if (!dependencyChanged) {
-                return;
-            }
-
-            // Ok, we are affected by this collection. Update all viewModels from this repo.
-            const relations = this.relationsByCollection[collection];
-            ownViewModels.forEach(ownViewModel => {
-                relations.forEach(relation => {
-                    changedModels[collection].forEach(id => {
-                        if (
-                            this.relationManager.updateSingleDependencyForChangedModel(
-                                ownViewModel,
-                                relation,
-                                collection,
-                                id
-                            )
-                        ) {
-                            updatedIds.push(ownViewModel.id);
-                        }
-                    });
-                });
-            });
-            // Order all relations, if neeed.
-            if (updatedIds.length) {
-                relations.forEach(relation => {
-                    if (
-                        (isNormalRelationDefinition(relation) || isReverseRelationDefinition(relation)) &&
-                        (relation.type === 'M2M' || relation.type === 'O2M') &&
-                        relation.order
-                    ) {
-                        ownViewModels.forEach(ownViewModel => {
-                            if (ownViewModel['_' + relation.ownKey]) {
-                                this.relationManager.sortByRelation(relation, ownViewModel);
-                            }
-                        });
-                    }
-                });
-            }
-
-            // Inform about changes. (List updates is done in `commitUpdate` via `DataStoreUpdateManagerService`)
-            updatedIds.forEach(id => {
-                this.updateViewModelObservable(id);
-            });
-        });
-        return !!updatedIds.length;
-    }
-
-    public updateDependenciesForDeletedModels(deletedModels: CollectionIds): boolean {
-        if (!Object.keys(this.reverseRelationsByCollection).length) {
-            return false;
-        }
-
-        // Get all viewModels from this repo once.
-        const ownViewModels = this.getViewModelList();
-        let somethingChanged = false;
-        Object.keys(deletedModels).forEach(collection => {
-            const dependencyChanged: boolean = Object.keys(this.reverseRelationsByCollection).includes(collection);
-            if (!dependencyChanged) {
-                return;
-            }
-
-            // Ok, we are affected by this collection. Update all viewModels from this repo.
-            const relations = this.reverseRelationsByCollection[collection];
-            ownViewModels.forEach(ownViewModel => {
-                relations.forEach(relation => {
-                    deletedModels[collection].forEach(id => {
-                        if (this.relationManager.updateSingleDependencyForDeletedModel(ownViewModel, relation, id)) {
-                            // Inform about changes. (List updates is done in `commitUpdate` via `DataStoreUpdateManagerService`)
-                            this.updateViewModelObservable(id);
-                            somethingChanged = true;
-                        }
-                    });
-                });
-            });
-            // Ordering all relations is not needed, because just deleting things out of arrays
-            // will not unorder them.
-        });
-        return somethingChanged;
-    }
-
     /**
      * Saves the (full) update to an existing model. So called "update"-function
      * Provides a default procedure, but can be overwritten if required
@@ -345,10 +215,8 @@ export abstract class BaseRepository<V extends BaseViewModel & T, M extends Base
      * @param viewModel the view model that the update is based on
      */
     public async update(update: Partial<M>, viewModel: V): Promise<void> {
-        const sendUpdate = new this.baseModelCtor();
+        const data = viewModel.getUpdatedModel(update);
-        sendUpdate.patchValues(viewModel.getModel());
+        return await this.dataSend.updateModel(data);
-        sendUpdate.patchValues(update);
-        return await this.dataSend.updateModel(sendUpdate);
     }
 
     /**
@@ -359,9 +227,8 @@ export abstract class BaseRepository<V extends BaseViewModel & T, M extends Base
      * @param viewModel the motion to update
      */
     public async patch(update: Partial<M>, viewModel: V): Promise<void> {
-        const patch = new this.baseModelCtor();
+        const patch = new this.baseModelCtor(update);
         patch.id = viewModel.id;
-        patch.patchValues(update);
         return await this.dataSend.partialUpdateModel(patch);
     }
 
@@ -384,8 +251,7 @@ export abstract class BaseRepository<V extends BaseViewModel & T, M extends Base
     public async create(model: M): Promise<Identifiable> {
         // this ensures we get a valid base model, even if the view was just
         // sending an object with "as MyModelClass"
-        const sendModel = new this.baseModelCtor();
+        const sendModel = new this.baseModelCtor(model);
-        sendModel.patchValues(model);
 
         // Strips empty fields from the sending mode data (except false)
         // required for i.e. users, since group list is mandatory

client/src/app/core/repositories/config/config-repository.service.ts

@@ -154,8 +154,8 @@ export class ConfigRepositoryService extends BaseRepository<ViewConfig, Config,
         throw new Error('Config variables cannot be created');
     }
 
-    public changedModels(ids: number[], initialLoading: boolean): void {
+    public changedModels(ids: number[]): void {
-        super.changedModels(ids, initialLoading);
+        super.changedModels(ids);
 
         ids.forEach(id => {
             this.updateConfigStructure(false, this.viewModelStore[id]);
@@ -246,10 +246,7 @@ export class ConfigRepositoryService extends BaseRepository<ViewConfig, Config,
      * Saves a config value.
      */
     public async update(config: Partial<Config>, viewConfig: ViewConfig): Promise<void> {
-        const updatedConfig = new Config();
+        const updatedConfig = viewConfig.getUpdatedModel(config);
-        updatedConfig.patchValues(viewConfig.config);
-        updatedConfig.patchValues(config);
-        // TODO: Use datasendService, if it can switch correctly between put, post and patch
         await this.http.put(`/rest/${updatedConfig.collectionString}/${updatedConfig.key}/`, updatedConfig);
     }
 

client/src/app/core/repositories/motions/change-recommendation-repository.service.ts

@@ -112,41 +112,29 @@ export class ChangeRecommendationRepositoryService extends BaseRepository<
     /**
      * Sets a change recommendation to accepted.
      *
-     * @param {ViewMotionChangeRecommendation} change
+     * @param {ViewMotionChangeRecommendation} changeRecommendation
      */
-    public async setAccepted(change: ViewMotionChangeRecommendation): Promise<void> {
+    public async setAccepted(changeRecommendation: ViewMotionChangeRecommendation): Promise<void> {
-        const changeReco = change.changeRecommendation;
+        await this.patch({ rejected: false }, changeRecommendation);
-        changeReco.patchValues({
-            rejected: false
-        });
-        await this.dataSend.partialUpdateModel(changeReco);
     }
 
     /**
      * Sets a change recommendation to rejected.
      *
-     * @param {ViewMotionChangeRecommendation} change
+     * @param {ViewMotionChangeRecommendation} changeRecommendation
      */
-    public async setRejected(change: ViewMotionChangeRecommendation): Promise<void> {
+    public async setRejected(changeRecommendation: ViewMotionChangeRecommendation): Promise<void> {
-        const changeReco = change.changeRecommendation;
+        await this.patch({ rejected: true }, changeRecommendation);
-        changeReco.patchValues({
-            rejected: true
-        });
-        await this.dataSend.partialUpdateModel(changeReco);
     }
 
     /**
      * Sets if a change recommendation is internal (for the administrators) or not.
      *
-     * @param {ViewMotionChangeRecommendation} change
+     * @param {ViewMotionChangeRecommendation} changeRecommendation
      * @param {boolean} internal
      */
-    public async setInternal(change: ViewMotionChangeRecommendation, internal: boolean): Promise<void> {
+    public async setInternal(changeRecommendation: ViewMotionChangeRecommendation, internal: boolean): Promise<void> {
-        const changeReco = change.changeRecommendation;
+        await this.patch({ internal: internal }, changeRecommendation);
-        changeReco.patchValues({
-            internal: internal
-        });
-        await this.dataSend.partialUpdateModel(changeReco);
     }
 
     public getTitleWithChanges = (originalTitle: string, change: ViewUnifiedChange, crMode: ChangeRecoMode): string => {

client/src/app/core/repositories/motions/motion-repository.service.ts

@@ -32,6 +32,7 @@ import { ViewTag } from 'app/site/tags/models/view-tag';
 import { ViewPersonalNote } from 'app/site/users/models/view-personal-note';
 import { ViewUser } from 'app/site/users/models/view-user';
 import { BaseIsAgendaItemAndListOfSpeakersContentObjectRepository } from '../base-is-agenda-item-and-list-of-speakers-content-object-repository';
+import { NestedModelDescriptors } from '../base-repository';
 import { CollectionStringMapperService } from '../../core-services/collection-string-mapper.service';
 import { DataSendService } from '../../core-services/data-send.service';
 import { LinenumberingService, LineNumberRange } from '../../ui-services/linenumbering.service';
@@ -94,21 +95,6 @@ const MotionRelations: RelationDefinition[] = [
         ownKey: 'motion_block',
         foreignViewModel: ViewMotionBlock
     },
-    {
-        type: 'nested',
-        ownKey: 'submitters',
-        foreignViewModel: ViewSubmitter,
-        foreignModel: Submitter,
-        order: 'weight',
-        relationDefinition: [
-            {
-                type: 'M2O',
-                ownIdKey: 'user_id',
-                ownKey: 'user',
-                foreignViewModel: ViewUser
-            }
-        ]
-    },
     {
         type: 'M2M',
         ownIdKey: 'supporters_id',
@@ -138,10 +124,39 @@ const MotionRelations: RelationDefinition[] = [
         foreignIdKey: 'parent_id',
         ownKey: 'amendments',
         foreignViewModel: ViewMotion
+    },
+    // TMP:
+    {
+        type: 'M2O',
+        ownIdKey: 'parent_id',
+        ownKey: 'parent',
+        foreignViewModel: ViewMotion
     }
     // Personal notes are dynamically added in the repo.
 ];
 
+const MotionNestedModelDescriptors: NestedModelDescriptors = {
+    'motions/motion': [
+        {
+            ownKey: 'submitters',
+            foreignViewModel: ViewSubmitter,
+            foreignModel: Submitter,
+            order: 'weight',
+            relationDefinitionsByKey: {
+                user: {
+                    type: 'M2O',
+                    ownIdKey: 'user_id',
+                    ownKey: 'user',
+                    foreignViewModel: ViewUser
+                }
+            },
+            titles: {
+                getTitle: (viewSubmitter: ViewSubmitter) => (viewSubmitter.user ? viewSubmitter.user.getTitle() : '')
+            }
+        }
+    ]
+};
+
 /**
  * Repository Services for motions (and potentially categories)
  *
@@ -198,7 +213,17 @@ export class MotionRepositoryService extends BaseIsAgendaItemAndListOfSpeakersCo
         private readonly diff: DiffService,
         private operator: OperatorService
     ) {
-        super(DS, dataSend, mapperService, viewModelStoreService, translate, relationManager, Motion, MotionRelations);
+        super(
+            DS,
+            dataSend,
+            mapperService,
+            viewModelStoreService,
+            translate,
+            relationManager,
+            Motion,
+            MotionRelations,
+            MotionNestedModelDescriptors
+        );
         config.get<SortProperty>('motions_motions_sorting').subscribe(conf => {
             this.sortProperty = conf;
             this.setConfigSortFn();
@@ -209,54 +234,6 @@ export class MotionRepositoryService extends BaseIsAgendaItemAndListOfSpeakersCo
         });
     }
 
-    /**
-     * Adds the personal note custom relation to the relation definitions.
-     * Also adds the parent relation here to get access to methods in this repo.
-     */
-    protected groupRelationsByCollections(): void {
-        this.relationDefinitions.push({
-            type: 'custom',
-            foreignViewModel: ViewPersonalNote,
-            setRelations: (motion: Motion, viewMotion: ViewMotion) => {
-                viewMotion.personalNote = this.getPersonalNoteForMotion(motion);
-            },
-            updateDependency: (viewMotion: ViewMotion, viewPersonalNote: ViewPersonalNote) => {
-                const personalNoteContent = viewPersonalNote.getNoteContent(this.collectionString, viewMotion.id);
-                if (!personalNoteContent) {
-                    return false;
-                }
-
-                viewMotion.personalNote = personalNoteContent;
-                return true;
-            }
-        });
-        this.relationDefinitions.push({
-            type: 'M2O',
-            ownIdKey: 'parent_id',
-            ownKey: 'parent',
-            foreignViewModel: ViewMotion,
-            afterSetRelation: (motion: ViewMotion, foreignViewModel: ViewMotion | null) => {
-                if (foreignViewModel) {
-                    try {
-                        motion.diffLines = this.getAmendmentParagraphs(motion, this.motionLineLength, false);
-                    } catch (e) {
-                        console.warn('Error with motion or amendment ', motion);
-                    }
-                }
-            },
-            afterDependencyChange: (motion: ViewMotion, parent: ViewMotion) => {
-                if (motion.parent) {
-                    try {
-                        motion.diffLines = this.getAmendmentParagraphs(motion, this.motionLineLength, false);
-                    } catch (e) {
-                        console.warn('Error with motion or amendment: ', motion);
-                    }
-                }
-            }
-        });
-        super.groupRelationsByCollections();
-    }
-
     public getTitle = (titleInformation: MotionTitleInformation) => {
         if (titleInformation.identifier) {
             return titleInformation.identifier + ': ' + titleInformation.title;
@@ -321,8 +298,8 @@ export class MotionRepositoryService extends BaseIsAgendaItemAndListOfSpeakersCo
         return this.translate.instant(plural ? 'Motions' : 'Motion');
     };
 
-    protected createViewModelWithTitles(model: Motion, initialLoading: boolean): ViewMotion {
+    protected createViewModelWithTitles(model: Motion): ViewMotion {
-        const viewModel = super.createViewModelWithTitles(model, initialLoading);
+        const viewModel = super.createViewModelWithTitles(model);
 
         viewModel.getIdentifierOrTitle = () => this.getIdentifierOrTitle(viewModel);
         viewModel.getProjectorTitle = () => this.getAgendaSlideTitle(viewModel);
@@ -330,6 +307,37 @@ export class MotionRepositoryService extends BaseIsAgendaItemAndListOfSpeakersCo
         return viewModel;
     }
 
+    protected extendRelations(): void {
+        this.relationDefinitions.push({
+            type: 'custom',
+            ownKey: 'personalNote',
+            get: (motion: Motion, viewMotion: ViewMotion) => {
+                return this.getPersonalNoteForMotion(motion);
+            },
+            getCacheObjectToCheck: (viewMotion: ViewMotion) => this.getPersonalNote()
+        });
+        this.relationDefinitions.push({
+            type: 'custom',
+            ownKey: 'diffLines',
+            get: (motion: Motion, viewMotion: ViewMotion) => {
+                if (viewMotion.parent) {
+                    return this.getAmendmentParagraphs(viewMotion, this.motionLineLength, false);
+                }
+            },
+            getCacheObjectToCheck: (viewMotion: ViewMotion) => viewMotion.parent
+        });
+        super.extendRelations();
+    }
+
+    /**
+     * @returns the personal note for the operator.
+     */
+    private getPersonalNote(): ViewPersonalNote | null {
+        return this.viewModelStoreService.find(ViewPersonalNote, pn => {
+            return pn.user_id === this.operator.user.id;
+        });
+    }
+
     /**
      * Get the personal note content for one motion by their id
      *
@@ -341,9 +349,7 @@ export class MotionRepositoryService extends BaseIsAgendaItemAndListOfSpeakersCo
             return;
         }
 
-        const personalNote = this.viewModelStoreService.find(ViewPersonalNote, pn => {
+        const personalNote = this.getPersonalNote();
-            return pn.userId === this.operator.user.id;
-        });
         if (!personalNote) {
             return;
         }
@@ -735,7 +741,7 @@ export class MotionRepositoryService extends BaseIsAgendaItemAndListOfSpeakersCo
         const motion = amendment.parent;
         const baseParagraphs = this.getTextParagraphs(motion, true, lineLength);
 
-        return amendment.amendment_paragraphs
+        return (amendment.amendment_paragraphs || [])
             .map(
                 (newText: string, paraNo: number): DiffLinesInParagraph => {
                     if (newText !== null) {
@@ -779,7 +785,7 @@ export class MotionRepositoryService extends BaseIsAgendaItemAndListOfSpeakersCo
         const motion = amendment.parent;
         const baseParagraphs = this.getTextParagraphs(motion, true, lineLength);
 
-        return amendment.amendment_paragraphs
+        return (amendment.amendment_paragraphs || [])
             .map(
                 (newText: string, paraNo: number): ViewMotionAmendedParagraph => {
                     if (newText === null) {

client/src/app/core/repositories/motions/state-repository.service.ts

@@ -25,6 +25,12 @@ const StateRelations: RelationDefinition[] = [
         ownIdKey: 'next_states_id',
         ownKey: 'next_states',
         foreignViewModel: ViewState
+    },
+    {
+        type: 'M2M',
+        foreignIdKey: 'next_states_id',
+        ownKey: 'previous_states',
+        foreignViewModel: ViewState
     }
 ];
 

client/src/app/core/repositories/projector/projector-repository.service.ts

@@ -80,8 +80,7 @@ export class ProjectorRepositoryService extends BaseRepository<ViewProjector, Pr
      * Creates a new projector. Adds the clock as default, stable element
      */
     public async create(projectorData: Partial<Projector>): Promise<Identifiable> {
-        const projector = new Projector();
+        const projector = new Projector(projectorData);
-        projector.patchValues(projectorData);
         projector.elements = [{ name: 'core/clock', stable: true }];
         return await this.dataSend.createModel(projector);
     }

client/src/app/core/repositories/users/user-repository.service.ts

@@ -147,8 +147,8 @@ export class UserRepositoryService extends BaseRepository<ViewUser, User, UserTi
     /**
      * Adds teh short and full name to the view user.
      */
-    protected createViewModelWithTitles(model: User, initialLoading: boolean): ViewUser {
+    protected createViewModelWithTitles(model: User): ViewUser {
-        const viewModel = super.createViewModelWithTitles(model, initialLoading);
+        const viewModel = super.createViewModelWithTitles(model);
         viewModel.getFullName = () => this.getFullName(viewModel);
         viewModel.getShortName = () => this.getShortName(viewModel);
         return viewModel;
@@ -163,23 +163,19 @@ export class UserRepositoryService extends BaseRepository<ViewUser, User, UserTi
      * @param viewUser
      */
     public async update(update: Partial<User>, viewUser: ViewUser): Promise<void> {
-        const updateUser = new User();
-        updateUser.patchValues(viewUser.user);
-        updateUser.patchValues(update);
-
         // if the user deletes the username, reset
         // prevents the server of generating '<firstname> <lastname> +1' as username
-        if (updateUser.username === '') {
+        if (update.username === '') {
-            updateUser.username = viewUser.username;
+            update.username = viewUser.username;
         }
 
         // if the update user does not have a gender-field, send gender as empty string.
         // This allow to delete a previously selected gender
-        if (!updateUser.gender) {
+        if (!update.gender) {
-            updateUser.gender = '';
+            update.gender = '';
         }
 
-        return await this.dataSend.updateModel(updateUser);
+        return super.update(update, viewUser);
     }
 
     /**

client/src/app/core/ui-services/base-filter-list.service.ts

@@ -309,7 +309,7 @@ export abstract class BaseFilterListService<V extends BaseViewModel> {
                     };
                 });
 
-                if (!!noneOptionLabel) {
+                if (noneOptionLabel) {
                     filterProperties.push('-');
                     filterProperties.push({
                         condition: null,

client/src/app/core/ui-services/base-sort.service.ts

@@ -95,7 +95,7 @@ export abstract class BaseSortService<T extends Identifiable & Displayable> {
                 case 'number':
                     return firstProperty > secondProperty ? 1 : -1;
                 case 'string':
-                    if (!!firstProperty && !secondProperty) {
+                    if (firstProperty && !secondProperty) {
                         return -1;
                     } else if (!firstProperty && !!secondProperty) {
                         return 1;

client/src/app/shared/components/extension-field/extension-field.component.ts

@@ -156,7 +156,7 @@ export class ExtensionFieldComponent implements OnInit, OnDestroy {
             this.searchValueSubscription = this.extensionFieldForm
                 .get('list')
                 .valueChanges.subscribe((value: number) => {
-                    if (!!value) {
+                    if (value) {
                         if (this.listSubmitOnChange) {
                             this.listChange.emit(value);
                         }

client/src/app/shared/components/list-view-table/list-view-table.component.ts

@@ -531,7 +531,7 @@ export class ListViewTableComponent<V extends BaseViewModel, M extends BaseModel
                             propertyAsString = '' + item[prop];
                         }
 
-                        if (!!propertyAsString) {
+                        if (propertyAsString) {
                             const foundProp =
                                 propertyAsString
                                     .trim()
@@ -635,9 +635,11 @@ export class ListViewTableComponent<V extends BaseViewModel, M extends BaseModel
      * does not work, tying the tables to the same hight.
      */
     public async scrollToPreviousPosition(): Promise<void> {
+        if (this.ngrid) {
             const scrollIndex = await this.getScrollIndex(this.listStorageKey);
             this.ngrid.viewport.scrollToIndex(scrollIndex);
         }
+    }
 
     /**
      * This function changes the height of the row for virtual-scrolling in the relating `.scss`-file.

client/src/app/shared/components/rounded-input/rounded-input.component.ts

@@ -47,7 +47,7 @@ export class RoundedInputComponent implements OnInit, OnDestroy {
      */
     @Input()
     public set model(value: string) {
-        if (!!value) {
+        if (value) {
             this.modelForm.setValue(value);
         }
     }

client/src/app/shared/components/sorting-tree/sorting-tree.component.ts

@@ -633,7 +633,7 @@ export class SortingTreeComponent<T extends Identifiable & Displayable> implemen
                 break;
 
             case Direction.RIGHT:
-                if (!!possibleParent) {
+                if (possibleParent) {
                     const nextLevel = this.nextNode.level + direction.steps;
                     if (nextLevel <= possibleParent.level) {
                         this.placeholderLevel = nextLevel;
@@ -646,7 +646,7 @@ export class SortingTreeComponent<T extends Identifiable & Displayable> implemen
                 break;
 
             case Direction.NOWAY:
-                if (!!possibleParent) {
+                if (!possibleParent) {
                     if (this.nextNode.level <= possibleParent.level + 1) {
                         this.placeholderLevel = this.nextNode.level;
                     } else {
@@ -678,7 +678,7 @@ export class SortingTreeComponent<T extends Identifiable & Displayable> implemen
             case Direction.UPWARDS:
                 for (let i = 0; i < steps; ++i) {
                     const parent = this.getExpandedParentNode(this.osTreeData[currentPosition - 1]);
-                    if (!!parent) {
+                    if (parent) {
                         currentPosition = parent.position;
                     } else {
                         break;
@@ -693,7 +693,7 @@ export class SortingTreeComponent<T extends Identifiable & Displayable> implemen
                 currentPosition -= 1;
                 for (let i = 0; i < steps; ++i) {
                     const parent = this.getExpandedParentNode(this.osTreeData[currentPosition]);
-                    if (!!parent) {
+                    if (parent) {
                         currentPosition = parent.position - 1;
                     } else {
                         break;

client/src/app/shared/components/speaker-button/speaker-button.component.ts

@@ -35,7 +35,7 @@ export class SpeakerButtonComponent implements OnDestroy {
 
         this.cleanLosSub();
 
-        if (!!listOfSpeakers) {
+        if (listOfSpeakers) {
             this.losSub = this.listOfSpeakersRepo
                 .getViewModelObservable(listOfSpeakers.id)
                 .pipe(distinctUntilChanged())

client/src/app/shared/models/agenda/list-of-speakers.ts

@@ -2,6 +2,12 @@ import { BaseModelWithContentObject } from '../base/base-model-with-content-obje
 import { ContentObject } from '../base/content-object';
 import { Speaker } from './speaker';
 
+export interface ListOfSpeakersWithoutNestedModels extends BaseModelWithContentObject<ListOfSpeakers> {
+    id: number;
+    title_information: object;
+    closed: boolean;
+}
+
 /**
  * Representations of agenda Item
  * @ignore
@@ -19,3 +25,5 @@ export class ListOfSpeakers extends BaseModelWithContentObject<ListOfSpeakers> {
         super(ListOfSpeakers.COLLECTIONSTRING, input);
     }
 }
+
+export interface ListOfSpeakers extends ListOfSpeakersWithoutNestedModels {}

client/src/app/shared/models/assignments/assignment-poll-option.ts

@@ -17,10 +17,6 @@ export class AssignmentPollOption extends BaseModel<AssignmentPollOption> {
 
     public id: number; // The AssignmentPollOption id
     public candidate_id: number; // the user id of the candidate
-    public get user_id(): number {
-        // to be consistent with user...
-        return this.candidate_id;
-    }
     public is_elected: boolean;
     public votes: AssignmentOptionVote[];
     public poll_id: number;

client/src/app/shared/models/assignments/assignment-poll.ts

@@ -2,6 +2,20 @@ import { AssignmentPollMethod } from 'app/site/assignments/services/assignment-p
 import { AssignmentPollOption } from './assignment-poll-option';
 import { BaseModel } from '../base/base-model';
 
+export interface AssignmentPollWithoutNestedModels extends BaseModel<AssignmentPoll> {
+    id: number;
+    pollmethod: AssignmentPollMethod;
+    description: string;
+    published: boolean;
+    votesvalid: number;
+    votesno: number;
+    votesabstain: number;
+    votesinvalid: number;
+    votescast: number;
+    has_votes: boolean;
+    assignment_id: number;
+}
+
 /**
  * Content of the 'polls' property of assignments
  * @ignore
@@ -11,21 +25,8 @@ export class AssignmentPoll extends BaseModel<AssignmentPoll> {
     private static DECIMAL_FIELDS = ['votesvalid', 'votesinvalid', 'votescast', 'votesno', 'votesabstain'];
 
     public id: number;
-    public pollmethod: AssignmentPollMethod;
-    public description: string;
-    public published: boolean;
     public options: AssignmentPollOption[];
-    public votesvalid: number;
-    public votesno: number;
-    public votesabstain: number;
-    public votesinvalid: number;
-    public votescast: number;
-    public has_votes: boolean;
-    public assignment_id: number;
 
-    /**
-     * @param input
-     */
     public constructor(input?: any) {
         // cast stringify numbers
         if (input) {
@@ -38,3 +39,4 @@ export class AssignmentPoll extends BaseModel<AssignmentPoll> {
         super(AssignmentPoll.COLLECTIONSTRING, input);
     }
 }
+export interface AssignmentPoll extends AssignmentPollWithoutNestedModels {}

client/src/app/shared/models/assignments/assignment.ts

@@ -2,6 +2,17 @@ import { AssignmentPoll } from './assignment-poll';
 import { AssignmentRelatedUser } from './assignment-related-user';
 import { BaseModelWithAgendaItemAndListOfSpeakers } from '../base/base-model-with-agenda-item-and-list-of-speakers';
 
+export interface AssignmentWithoutNestedModels extends BaseModelWithAgendaItemAndListOfSpeakers<Assignment> {
+    id: number;
+    title: string;
+    description: string;
+    open_posts: number;
+    phase: number; // see Openslides constants
+    poll_description_default: number;
+    tags_id: number[];
+    attachments_id: number[];
+}
+
 /**
  * Representation of an assignment.
  * @ignore
@@ -10,15 +21,8 @@ export class Assignment extends BaseModelWithAgendaItemAndListOfSpeakers<Assignm
     public static COLLECTIONSTRING = 'assignments/assignment';
 
     public id: number;
-    public title: string;
-    public description: string;
-    public open_posts: number;
-    public phase: number; // see Openslides constants
     public assignment_related_users: AssignmentRelatedUser[];
-    public poll_description_default: number;
     public polls: AssignmentPoll[];
-    public tags_id: number[];
-    public attachments_id: number[];
 
     public constructor(input?: any) {
         super(Assignment.COLLECTIONSTRING, input);
@@ -31,13 +35,5 @@ export class Assignment extends BaseModelWithAgendaItemAndListOfSpeakers<Assignm
             })
             .map((candidate: AssignmentRelatedUser) => candidate.user_id);
     }
-
-    public deserialize(input: any): void {
-        Object.assign(this, input);
-
-        this.polls = [];
-        if (input.polls instanceof Array) {
-            this.polls = input.polls.map(pollData => new AssignmentPoll(pollData));
-        }
-    }
 }
+export interface Assignment extends AssignmentWithoutNestedModels {}

client/src/app/shared/models/base/base-model-with-content-object.ts

@@ -4,7 +4,7 @@ import { ContentObject } from './content-object';
 /**
  * A base model which has a content object, like items of list of speakers.
  */
-export abstract class BaseModelWithContentObject<T = object> extends BaseModel<T> {
+export abstract class BaseModelWithContentObject<T = any> extends BaseModel<T> {
     public abstract content_object: ContentObject;
 
     public get contentObjectData(): ContentObject {

client/src/app/shared/models/base/base-model.ts

@@ -1,5 +1,5 @@
 import { Collection } from './collection';
-import { Deserializable } from './deserializable';
+import { Deserializer } from './deserializer';
 import { Identifiable } from './identifiable';
 
 export interface ModelConstructor<T extends BaseModel<T>> {
@@ -11,69 +11,21 @@ export interface ModelConstructor<T extends BaseModel<T>> {
  * Abstract parent class to set rules and functions for all models.
  * When inherit from this class, give the subclass as the type. E.g. `class Motion extends BaseModel<Motion>`
  */
-export abstract class BaseModel<T = object> implements Deserializable, Identifiable, Collection {
+export abstract class BaseModel<T = any> extends Deserializer implements Identifiable, Collection {
-    /**
+    public get elementId(): string {
-     * force children of BaseModel to have a collectionString.
+        return `${this.collectionString}:${this.id}`;
-     *
-     * Has a getter but no setter.
-     */
-    protected _collectionString: string;
-
-    /**
-     * returns the collectionString.
-     *
-     * The server and the dataStore use it to identify the collection.
-     */
-    public get collectionString(): string {
-        return this._collectionString;
     }
-
     /**
      * force children of BaseModel to have an id
      */
     public abstract id: number;
 
-    /**
+    protected constructor(public readonly collectionString: string, input?: Partial<T>) {
-     * constructor that calls super from parent class
+        super(input);
-     *
-     * @param collectionString
-     * @param verboseName
-     * @param input
-     */
-    protected constructor(collectionString: string, input?: any) {
-        this._collectionString = collectionString;
-
-        if (input) {
-            this.changeNullValuesToUndef(input);
-            this.deserialize(input);
-        }
     }
 
-    /**
+    public getUpdatedVersion(update: Partial<T>): T {
-     * Prevent to send literally "null" if should be send
+        const copy: T = (<any>Object.assign({}, this)) as T;
-     * @param input object to deserialize
+        return Object.assign(copy, update);
-     */
-    public changeNullValuesToUndef(input: any): void {
-        Object.keys(input).forEach(key => {
-            if (input[key] === null) {
-                input[key] = undefined;
-            }
-        });
-    }
-
-    /**
-     * update the values of the base model with new values
-     */
-    public patchValues(update: Partial<T>): void {
-        Object.assign(this, update);
-    }
-
-    /**
-     * Most simple and most commonly used deserialize function.
-     * Inherited to children, can be overwritten for special use cases
-     * @param input JSON data for deserialization.
-     */
-    public deserialize(input: any): void {
-        Object.assign(this, input);
     }
 }

client/src/app/shared/models/base/deserializer.ts

@@ -11,28 +11,16 @@ export abstract class Deserializer implements Deserializable {
      */
     protected constructor(input?: any) {
         if (input) {
-            this.changeNullValuesToUndef(input);
             this.deserialize(input);
         }
     }
 
     /**
-     * should be used to assign JSON values to the object itself.
+     * Most simple and most commonly used deserialize function.
-     * @param input
+     * Inherited to children, can be overwritten for special use cases
+     * @param input JSON data for deserialization.
      */
     public deserialize(input: any): void {
         Object.assign(this, input);
     }
-
-    /**
-     * Prevent to send literally "null" if should be send
-     * @param input object to deserialize
-     */
-    public changeNullValuesToUndef(input: any): void {
-        Object.keys(input).forEach(key => {
-            if (input[key] === null) {
-                input[key] = undefined;
-            }
-        });
-    }
 }

client/src/app/shared/models/mediafiles/mediafile.ts

@@ -9,6 +9,21 @@ interface FileMetadata {
     encrypted?: boolean;
 }
 
+export interface MediafileWithoutNestedModels extends BaseModelWithListOfSpeakers<Mediafile> {
+    id: number;
+    title: string;
+    media_url_prefix: string;
+    filesize?: string;
+    access_groups_id: number[];
+    create_timestamp: string;
+    parent_id: number | null;
+    is_directory: boolean;
+    path: string;
+    inherited_access_groups_id: boolean | number[];
+
+    has_inherited_access_groups: boolean;
+}
+
 /**
  * Representation of MediaFile. Has the nested property "File"
  * @ignore
@@ -16,25 +31,14 @@ interface FileMetadata {
 export class Mediafile extends BaseModelWithListOfSpeakers<Mediafile> {
     public static COLLECTIONSTRING = 'mediafiles/mediafile';
     public id: number;
-    public title: string;
     public mediafile?: FileMetadata;
-    public media_url_prefix: string;
-    public filesize?: string;
-    public access_groups_id: number[];
-    public create_timestamp: string;
-    public parent_id: number | null;
-    public is_directory: boolean;
-    public path: string;
-    public inherited_access_groups_id: boolean | number[];
 
     public get has_inherited_access_groups(): boolean {
         return typeof this.inherited_access_groups_id !== 'boolean';
     }
 
     public constructor(input?: any) {
-        super(Mediafile.COLLECTIONSTRING);
+        super(Mediafile.COLLECTIONSTRING, input);
-        // Do not change null to undefined...
-        this.deserialize(input);
     }
 
     /**
@@ -46,3 +50,4 @@ export class Mediafile extends BaseModelWithListOfSpeakers<Mediafile> {
         return `${this.media_url_prefix}${this.path}`;
     }
 }
+export interface Mediafile extends MediafileWithoutNestedModels {}

client/src/app/shared/models/motions/motion.ts

@@ -9,6 +9,40 @@ export interface MotionComment {
     read_groups_id: number[];
 }
 
+export interface MotionWithoutNestedModels extends BaseModelWithAgendaItemAndListOfSpeakers<Motion> {
+    id: number;
+    identifier: string;
+    title: string;
+    text: string;
+    reason: string;
+    amendment_paragraphs: string[] | null;
+    modified_final_version: string;
+    parent_id: number;
+    category_id: number;
+    category_weight: number;
+    motion_block_id: number;
+    origin: string;
+    supporters_id: number[];
+    comments: MotionComment[];
+    workflow_id: number;
+    state_id: number;
+    state_extension: string;
+    state_required_permission_to_see: string;
+    statute_paragraph_id: number;
+    recommendation_id: number;
+    recommendation_extension: string;
+    tags_id: number[];
+    attachments_id: number[];
+    polls: MotionPoll[];
+    weight: number;
+    sort_parent_id: number;
+    created: string;
+    last_modified: string;
+    change_recommendations_id: number[];
+
+    sorted_submitter_ids: number[];
+}
+
 /**
  * Representation of Motion.
  *
@@ -20,35 +54,7 @@ export class Motion extends BaseModelWithAgendaItemAndListOfSpeakers<Motion> {
     public static COLLECTIONSTRING = 'motions/motion';
 
     public id: number;
-    public identifier: string;
-    public title: string;
-    public text: string;
-    public reason: string;
-    public amendment_paragraphs: string[];
-    public modified_final_version: string;
-    public parent_id: number;
-    public category_id: number;
-    public category_weight: number;
-    public motion_block_id: number;
-    public origin: string;
     public submitters: Submitter[];
-    public supporters_id: number[];
-    public comments: MotionComment[];
-    public workflow_id: number;
-    public state_id: number;
-    public state_extension: string;
-    public state_required_permission_to_see: string;
-    public statute_paragraph_id: number;
-    public recommendation_id: number;
-    public recommendation_extension: string;
-    public tags_id: number[];
-    public attachments_id: number[];
-    public polls: MotionPoll[];
-    public weight: number;
-    public sort_parent_id: number;
-    public created: string;
-    public last_modified: string;
-    public change_recommendations_id: number[];
 
     public constructor(input?: any) {
         super(Motion.COLLECTIONSTRING, input);
@@ -57,7 +63,7 @@ export class Motion extends BaseModelWithAgendaItemAndListOfSpeakers<Motion> {
     /**
      * returns the motion submitters user ids
      */
-    public get sorted_submitters_id(): number[] {
+    public get sorted_submitter_ids(): number[] {
         return this.submitters
             .sort((a: Submitter, b: Submitter) => {
                 return a.weight - b.weight;
@@ -65,3 +71,5 @@ export class Motion extends BaseModelWithAgendaItemAndListOfSpeakers<Motion> {
             .map((submitter: Submitter) => submitter.user_id);
     }
 }
+
+export interface Motion extends MotionWithoutNestedModels {}

client/src/app/shared/models/motions/state.ts

@@ -40,21 +40,4 @@ export class State extends BaseModel<State> {
     public constructor(input?: any) {
         super(State.COLLECTIONSTRING, input);
     }
-
-    public toString = (): string => {
-        return this.name;
-    };
-
-    /**
-     * Checks if a workflowstate has no 'next state' left, and is final
-     */
-    public get isFinalState(): boolean {
-        if (!this.next_states_id || !this.next_states_id.length) {
-            return true;
-        }
-        if (this.next_states_id.length === 1 && this.next_states_id[0] === 0) {
-            return true;
-        }
-        return false;
-    }
 }

client/src/app/shared/models/topics/topic.ts

@@ -12,7 +12,7 @@ export class Topic extends BaseModelWithAgendaItemAndListOfSpeakers<Topic> {
     public text: string;
     public attachments_id: number[];
 
-    public constructor(input?: any) {
+    public constructor(input?: Partial<Topic>) {
         super(Topic.COLLECTIONSTRING, input);
     }
 }

client/src/app/shared/models/users/group.ts

@@ -11,11 +11,7 @@ export class Group extends BaseModel<Group> {
     public name: string;
     public permissions: string[];
 
-    public constructor(input?: any) {
+    public constructor(input?: Partial<Group>) {
         super(Group.COLLECTIONSTRING, input);
-        if (!input) {
-            // permissions are required for new groups
-            this.permissions = [];
-        }
     }
 }

client/src/app/shared/models/users/personal-note.ts

@@ -55,7 +55,7 @@ export class PersonalNote extends BaseModel<PersonalNote> implements PersonalNot
     public user_id: number;
     public notes: PersonalNotesFormat;
 
-    public constructor(input: any) {
+    public constructor(input: Partial<PersonalNote>) {
         super(PersonalNote.COLLECTIONSTRING, input);
     }
 }

client/src/app/shared/models/users/user.ts

@@ -18,20 +18,20 @@ export class User extends BaseModel<User> {
     public title: string;
     public first_name: string;
     public last_name: string;
-    public gender: string;
+    public gender?: string;
     public structure_level: string;
     public number: string;
     public about_me: string;
     public groups_id: number[];
     public is_present: boolean;
     public is_committee: boolean;
-    public email: string;
+    public email?: string;
     public last_email_send?: string; // ISO datetime string
-    public comment: string;
+    public comment?: string;
-    public is_active: boolean;
+    public is_active?: boolean;
-    public default_password: string;
+    public default_password?: string;
 
-    public constructor(input?: any) {
+    public constructor(input?: Partial<User>) {
         super(User.COLLECTIONSTRING, input);
     }
 }

client/src/app/site/agenda/components/agenda-list/agenda-list.component.ts

@@ -98,7 +98,7 @@ export class AgendaListComponent extends BaseListViewComponent<ViewItem> impleme
     /**
      * Define extra filter properties
      */
-    public filterProps = ['itemNumber', 'comment', 'getListTitle'];
+    public filterProps = ['item_number', 'comment', 'getListTitle'];
 
     /**
      * The usual constructor for components
@@ -205,7 +205,7 @@ export class AgendaListComponent extends BaseListViewComponent<ViewItem> impleme
     public async onAutoNumbering(): Promise<void> {
         const title = this.translate.instant('Are you sure you want to number all agenda items?');
         if (await this.promptService.open(title)) {
-            await this.repo.autoNumbering().then(null, this.raiseError);
+            await this.repo.autoNumbering().catch(this.raiseError);
         }
     }
 
@@ -213,7 +213,7 @@ export class AgendaListComponent extends BaseListViewComponent<ViewItem> impleme
      * Click handler for the done button in the dot-menu
      */
     public async onDoneSingleButton(item: ViewItem): Promise<void> {
-        await this.repo.update({ closed: !item.closed }, item).then(null, this.raiseError);
+        await this.repo.update({ closed: !item.closed }, item).catch(this.raiseError);
     }
 
     /**
@@ -233,7 +233,7 @@ export class AgendaListComponent extends BaseListViewComponent<ViewItem> impleme
         const title = this.translate.instant('Are you sure you want to remove this entry from the agenda?');
         const content = item.contentObject.getTitle();
         if (await this.promptService.open(title, content)) {
-            await this.repo.removeFromAgenda(item).then(null, this.raiseError);
+            await this.repo.removeFromAgenda(item).catch(this.raiseError);
         }
     }
 
@@ -244,7 +244,7 @@ export class AgendaListComponent extends BaseListViewComponent<ViewItem> impleme
         const title = this.translate.instant('Are you sure you want to delete this topic?');
         const content = item.contentObject.getTitle();
         if (await this.promptService.open(title, content)) {
-            await this.topicRepo.delete(item.contentObject).then(null, this.raiseError);
+            await this.topicRepo.delete(item.contentObject).catch(this.raiseError);
         }
     }
 
@@ -295,7 +295,7 @@ export class AgendaListComponent extends BaseListViewComponent<ViewItem> impleme
     public async setAgendaType(agendaType: number): Promise<void> {
         try {
             for (const item of this.selectedRows) {
-                await this.repo.update({ type: agendaType }, item).then(null, this.raiseError);
+                await this.repo.update({ type: agendaType }, item).catch(this.raiseError);
             }
         } catch (e) {
             this.raiseError(e);

client/src/app/site/agenda/components/item-info-dialog/item-info-dialog.component.ts

@@ -51,7 +51,7 @@ export class ItemInfoDialogComponent {
         // load current values
         this.agendaInfoForm.get('type').setValue(item.type);
         this.agendaInfoForm.get('durationText').setValue(this.durationService.durationToString(item.duration, 'h'));
-        this.agendaInfoForm.get('item_number').setValue(item.itemNumber);
+        this.agendaInfoForm.get('item_number').setValue(item.item_number);
         this.agendaInfoForm.get('comment').setValue(item.comment);
     }
 

client/src/app/site/agenda/components/list-of-speakers/list-of-speakers.component.html

@@ -60,7 +60,7 @@
             <mat-icon>mic</mat-icon>
         </span>
 
-        <span class="name">{{ activeSpeaker.getTitle() }}</span>
+        <span class="name">{{ activeSpeaker.getListTitle() }}</span>
 
         <span class="suffix">
             <!-- Stop speaker button -->

client/src/app/site/agenda/components/list-of-speakers/list-of-speakers.component.ts

@@ -417,9 +417,7 @@ export class ListOfSpeakersComponent extends BaseViewComponent implements OnInit
      */
     public closeSpeakerList(): Promise<void> {
         if (!this.viewListOfSpeakers.closed) {
-            return this.listOfSpeakersRepo
+            return this.listOfSpeakersRepo.update({ closed: true }, this.viewListOfSpeakers).catch(this.raiseError);
-                .update({ closed: true }, this.viewListOfSpeakers)
-                .then(null, this.raiseError);
         }
     }
 
@@ -428,9 +426,7 @@ export class ListOfSpeakersComponent extends BaseViewComponent implements OnInit
      */
     public openSpeakerList(): Promise<void> {
         if (this.viewListOfSpeakers.closed) {
-            return this.listOfSpeakersRepo
+            return this.listOfSpeakersRepo.update({ closed: false }, this.viewListOfSpeakers).catch(this.raiseError);
-                .update({ closed: false }, this.viewListOfSpeakers)
-                .then(null, this.raiseError);
         }
     }
 

client/src/app/site/agenda/models/view-item.ts

@@ -18,34 +18,6 @@ export class ViewItem extends BaseViewModelWithContentObject<Item, BaseViewModel
         return this._model;
     }
 
-    public get itemNumber(): string {
-        return this.item.item_number;
-    }
-
-    public get title_information(): object {
-        return this.item.title_information;
-    }
-
-    public get duration(): number {
-        return this.item.duration;
-    }
-
-    public get type(): number {
-        return this.item.type;
-    }
-
-    public get closed(): boolean {
-        return this.item.closed;
-    }
-
-    public get comment(): string {
-        return this.item.comment;
-    }
-
-    public get level(): number {
-        return this.item.level;
-    }
-
     public getSubtitle: () => string | null;
 
     /**
@@ -71,19 +43,5 @@ export class ViewItem extends BaseViewModelWithContentObject<Item, BaseViewModel
         const type = ItemVisibilityChoices.find(choice => choice.key === this.type);
         return type ? type.csvName : '';
     }
-
-    /**
-     * @returns the weight the server assigns to that item. Mostly useful for sorting within
-     * it's own hierarchy level (items sharing a parent)
-     */
-    public get weight(): number {
-        return this.item.weight;
-    }
-
-    /**
-     * @returns the parent's id of that item (0 if no parent is set).
-     */
-    public get parent_id(): number {
-        return this.item.parent_id;
-    }
 }
+export interface ViewItem extends Item {}

client/src/app/site/agenda/models/view-list-of-speakers.ts

@@ -1,4 +1,4 @@
-import { ListOfSpeakers } from 'app/shared/models/agenda/list-of-speakers';
+import { ListOfSpeakers, ListOfSpeakersWithoutNestedModels } from 'app/shared/models/agenda/list-of-speakers';
 import { ContentObject } from 'app/shared/models/base/content-object';
 import { BaseViewModelWithContentObject } from 'app/site/base/base-view-model-with-content-object';
 import { BaseViewModelWithListOfSpeakers } from 'app/site/base/base-view-model-with-list-of-speakers';
@@ -19,20 +19,10 @@ export class ViewListOfSpeakers extends BaseViewModelWithContentObject<ListOfSpe
     public static COLLECTIONSTRING = ListOfSpeakers.COLLECTIONSTRING;
     protected _collectionString = ListOfSpeakers.COLLECTIONSTRING;
 
-    private _speakers?: ViewSpeaker[];
-
     public get listOfSpeakers(): ListOfSpeakers {
         return this._model;
     }
 
-    public get speakers(): ViewSpeaker[] {
-        return this._speakers || [];
-    }
-
-    public get title_information(): object {
-        return this.listOfSpeakers.title_information;
-    }
-
     /**
      * Gets the amount of waiting speakers
      */
@@ -40,10 +30,6 @@ export class ViewListOfSpeakers extends BaseViewModelWithContentObject<ListOfSpe
         return this.speakers.filter(speaker => speaker.state === SpeakerState.WAITING).length;
     }
 
-    public get closed(): boolean {
-        return this.listOfSpeakers.closed;
-    }
-
     public get listOfSpeakersUrl(): string {
         return `/agenda/speakers/${this.id}`;
     }
@@ -65,3 +51,7 @@ export class ViewListOfSpeakers extends BaseViewModelWithContentObject<ListOfSpe
         };
     }
 }
+interface IListOfSpeakersRelations {
+    speakers: ViewSpeaker[];
+}
+export interface ViewListOfSpeakers extends ListOfSpeakersWithoutNestedModels, IListOfSpeakersRelations {}

client/src/app/site/agenda/models/view-speaker.ts

@@ -18,46 +18,10 @@ export class ViewSpeaker extends BaseViewModel<Speaker> {
     public static COLLECTIONSTRING = Speaker.COLLECTIONSTRING;
     protected _collectionString = Speaker.COLLECTIONSTRING;
 
-    private _user?: ViewUser;
-
     public get speaker(): Speaker {
         return this._model;
     }
 
-    public get user(): ViewUser | null {
-        return this._user;
-    }
-
-    public get id(): number {
-        return this.speaker.id;
-    }
-
-    public get user_id(): number {
-        return this.speaker.user_id;
-    }
-
-    public get weight(): number {
-        return this.speaker.weight;
-    }
-
-    public get marked(): boolean {
-        return this.speaker.marked;
-    }
-
-    /**
-     * @returns an ISO datetime string or null
-     */
-    public get begin_time(): string | null {
-        return this.speaker.begin_time;
-    }
-
-    /**
-     * @returns an ISO datetime string or null
-     */
-    public get end_time(): string | null {
-        return this.speaker.end_time;
-    }
-
     /**
      * @returns
      *  - waiting if there is no begin nor end time
@@ -82,7 +46,10 @@ export class ViewSpeaker extends BaseViewModel<Speaker> {
         return this.user ? this.user.gender : '';
     }
 
-    public getTitle = () => {
+    public getListTitle = () => {
-        return this.name;
+        return this.getTitle();
     };
 }
+export interface ViewSpeaker extends Speaker {
+    user?: ViewUser;
+}

client/src/app/site/agenda/services/agenda-pdf.service.ts

@@ -84,7 +84,7 @@ export class AgendaPdfService {
                     },
                     {
                         width: 60,
-                        text: nodeItem.item.itemNumber
+                        text: nodeItem.item.item_number
                     },
                     {
                         text: nodeItem.item.contentObject.getAgendaListTitleWithoutItemNumber()

client/src/app/site/assignments/components/assignment-detail/assignment-detail.component.html

@@ -36,11 +36,11 @@
 
         <!-- Add/remove to/from agenda -->
         <div *osPerms="'agenda.can_manage'">
-            <button mat-menu-item (click)="addToAgenda()" *ngIf="assignment && !assignment.agendaItem">
+            <button mat-menu-item (click)="addToAgenda()" *ngIf="assignment && !assignment.item">
                 <mat-icon>add</mat-icon>
                 <span translate>Add to agenda</span>
             </button>
-            <button mat-menu-item (click)="removeFromAgenda()" *ngIf="assignment && assignment.agendaItem">
+            <button mat-menu-item (click)="removeFromAgenda()" *ngIf="assignment && assignment.item">
                 <mat-icon>remove</mat-icon>
                 <span translate>Remove from agenda</span>
             </button>
@@ -241,7 +241,6 @@
                         matInput
                         placeholder="{{ 'Title' | translate }}"
                         formControlName="title"
-                        [value]="assignmentCopy.title || ''"
                     />
                     <mat-error>{{ 'The title is required' | translate }}</mat-error>
                 </mat-form-field>
@@ -287,7 +286,6 @@
                         matInput
                         placeholder="{{ 'Default comment on the ballot paper' | translate }}"
                         formControlName="poll_description_default"
-                        [value]="assignmentCopy.assignment.poll_description_default || ''"
                     />
                 </mat-form-field>
             </div>

client/src/app/site/assignments/components/assignment-detail/assignment-detail.component.ts

@@ -112,11 +112,6 @@ export class AssignmentDetailComponent extends BaseViewComponent implements OnIn
      */
     private _assignment: ViewAssignment;
 
-    /**
-     * Copy instance of the assignment that the user might edit
-     */
-    public assignmentCopy: ViewAssignment;
-
     /**
      * Check if the operator is a candidate
      *
@@ -288,7 +283,6 @@ export class AssignmentDetailComponent extends BaseViewComponent implements OnIn
      * @param assignment
      */
     private patchForm(assignment: ViewAssignment): void {
-        this.assignmentCopy = assignment;
         const contentPatch: { [key: string]: any } = {};
         Object.keys(this.assignmentForm.controls).forEach(control => {
             contentPatch[control] = assignment[control];
@@ -299,11 +293,11 @@ export class AssignmentDetailComponent extends BaseViewComponent implements OnIn
     /**
      * Save the current state of the assignment
      */
-    public saveAssignment(): void {
+    public async saveAssignment(): Promise<void> {
         if (this.newAssignment) {
             this.createAssignment();
         } else {
-            this.updateAssignmentFromForm();
+            await this.updateAssignmentFromForm();
         }
     }
 
@@ -312,21 +306,21 @@ export class AssignmentDetailComponent extends BaseViewComponent implements OnIn
      * TODO: directly open poll dialog?
      */
     public async createPoll(): Promise<void> {
-        await this.repo.addPoll(this.assignment).then(null, this.raiseError);
+        await this.repo.addPoll(this.assignment).catch(this.raiseError);
     }
 
     /**
      * Adds the operator to list of candidates
      */
     public async addSelf(): Promise<void> {
-        await this.repo.addSelf(this.assignment).then(null, this.raiseError);
+        await this.repo.addSelf(this.assignment).catch(this.raiseError);
     }
 
     /**
      * Removes the operator from list of candidates
      */
     public async removeSelf(): Promise<void> {
-        await this.repo.deleteSelf(this.assignment).then(null, this.raiseError);
+        await this.repo.deleteSelf(this.assignment).catch(this.raiseError);
     }
 
     /**
@@ -337,7 +331,7 @@ export class AssignmentDetailComponent extends BaseViewComponent implements OnIn
     public async addUser(userId: number): Promise<void> {
         const user = this.userRepo.getViewModel(userId);
         if (user) {
-            await this.repo.changeCandidate(user, this.assignment, true).then(null, this.raiseError);
+            await this.repo.changeCandidate(user, this.assignment, true).catch(this.raiseError);
         }
     }
 
@@ -347,7 +341,7 @@ export class AssignmentDetailComponent extends BaseViewComponent implements OnIn
      * @param candidate A ViewAssignmentUser currently in the list of related users
      */
     public async removeUser(candidate: ViewAssignmentRelatedUser): Promise<void> {
-        await this.repo.changeCandidate(candidate.user, this.assignment, false).then(null, this.raiseError);
+        await this.repo.changeCandidate(candidate.user, this.assignment, false).catch(this.raiseError);
     }
 
     /**
@@ -385,7 +379,6 @@ export class AssignmentDetailComponent extends BaseViewComponent implements OnIn
             this.editAssignment = true;
             // TODO set defaults?
             this.assignment = new ViewAssignment(new Assignment());
-            this.assignmentCopy = new ViewAssignment(new Assignment());
         }
     }
 
@@ -414,7 +407,7 @@ export class AssignmentDetailComponent extends BaseViewComponent implements OnIn
      * @param value the phase to set
      */
     public async onSetPhaseButton(value: number): Promise<void> {
-        this.repo.update({ phase: value }, this.assignment).then(null, this.raiseError);
+        this.repo.update({ phase: value }, this.assignment).catch(this.raiseError);
     }
 
     public onDownloadPdf(): void {
@@ -438,10 +431,13 @@ export class AssignmentDetailComponent extends BaseViewComponent implements OnIn
         }
     }
 
-    public updateAssignmentFromForm(): void {
+    public async updateAssignmentFromForm(): Promise<void> {
-        this.repo
+        try {
-            .patch({ ...this.assignmentForm.value }, this.assignmentCopy)
+            await this.repo.patch({ ...this.assignmentForm.value }, this.assignment);
-            .then(() => (this.editAssignment = false), this.raiseError);
+            this.editAssignment = false;
+        } catch (e) {
+            this.raiseError(e);
+        }
     }
 
     /**
@@ -482,7 +478,7 @@ export class AssignmentDetailComponent extends BaseViewComponent implements OnIn
      * (triggered on an autoupdate of either users or the assignment)
      */
     private filterCandidates(): void {
-        if (!this.assignment || !this.assignment.candidates) {
+        if (!this.assignment || !this.assignment.candidates.length) {
             this.filteredCandidates.next(this.availableCandidates.getValue());
         } else {
             this.filteredCandidates.next(
@@ -499,14 +495,14 @@ export class AssignmentDetailComponent extends BaseViewComponent implements OnIn
     public onSortingChange(listInNewOrder: ViewAssignmentRelatedUser[]): void {
         this.repo
             .sortCandidates(listInNewOrder.map(relatedUser => relatedUser.id), this.assignment)
-            .then(null, this.raiseError);
+            .catch(this.raiseError);
     }
 
     public addToAgenda(): void {
-        this.itemRepo.addItemToAgenda(this.assignment).then(null, this.raiseError);
+        this.itemRepo.addItemToAgenda(this.assignment).catch(this.raiseError);
     }
 
     public removeFromAgenda(): void {
-        this.itemRepo.removeFromAgenda(this.assignment.agendaItem).then(null, this.raiseError);
+        this.itemRepo.removeFromAgenda(this.assignment.item).catch(this.raiseError);
     }
 }

client/src/app/site/assignments/components/assignment-poll-dialog/assignment-poll-dialog.component.ts

@@ -90,12 +90,10 @@ export class AssignmentPollDialogComponent {
      */
     public submit(): void {
         const error = this.data.options.find(dataoption => {
-            for (const key of this.optionPollKeys) {
+            this.optionPollKeys.some(key => {
                 const keyValue = dataoption.votes.find(o => o.value === key);
-                if (!keyValue || keyValue.weight === undefined) {
+                return !keyValue || keyValue.weight === undefined;
-                    return true;
+            });
-                }
-            }
         });
         if (error) {
             this.matSnackBar.open(

client/src/app/site/assignments/components/assignment-poll/assignment-poll.component.html

@@ -170,7 +170,7 @@
             <h4 translate>Candidates</h4>
             <div *ngFor="let option of poll.options">
                 <span class="accent" *ngIf="option.user">{{ option.user.getFullName() }}</span>
-                <span *ngIf="!option.user">No user {{ option.user_id }}</span>
+                <span *ngIf="!option.user">No user {{ option.candidate_id }}</span>
             </div>
         </div>
     </div>

client/src/app/site/assignments/components/assignment-poll/assignment-poll.component.ts

@@ -161,7 +161,7 @@ export class AssignmentPollComponent extends BaseViewComponent implements OnInit
     public async onDeletePoll(): Promise<void> {
         const title = this.translate.instant('Are you sure you want to delete this ballot?');
         if (await this.promptService.open(title)) {
-            await this.assignmentRepo.deletePoll(this.poll).then(null, this.raiseError);
+            await this.assignmentRepo.deletePoll(this.poll).catch(this.raiseError);
         }
     }
 
@@ -197,13 +197,12 @@ export class AssignmentPollComponent extends BaseViewComponent implements OnInit
      */
     public enterVotes(): void {
         const dialogRef = this.dialog.open(AssignmentPollDialogComponent, {
-            // TODO deep copy of this.poll (JSON parse is ugly workaround) or sending just copy of the options
             data: this.poll.copy(),
             ...mediumDialogSettings
         });
         dialogRef.afterClosed().subscribe(result => {
             if (result) {
-                this.assignmentRepo.updateVotes(result, this.poll).then(null, this.raiseError);
+                this.assignmentRepo.updateVotes(result, this.poll).catch(this.raiseError);
             }
         });
     }
@@ -236,7 +235,7 @@ export class AssignmentPollComponent extends BaseViewComponent implements OnInit
 
         // TODO additional conditions: assignment not finished?
         const viewAssignmentRelatedUser = this.assignment.assignment_related_users.find(
-            user => user.user_id === option.user_id
+            user => user.user_id === option.candidate_id
         );
         if (viewAssignmentRelatedUser) {
             this.assignmentRepo.markElected(viewAssignmentRelatedUser, this.assignment, !option.is_elected);
@@ -249,7 +248,7 @@ export class AssignmentPollComponent extends BaseViewComponent implements OnInit
      */
     public async onEditDescriptionButton(): Promise<void> {
         const desc: string = this.descriptionForm.get('description').value;
-        await this.assignmentRepo.updatePoll({ description: desc }, this.poll).then(null, this.raiseError);
+        await this.assignmentRepo.updatePoll({ description: desc }, this.poll).catch(this.raiseError);
     }
 
     /**

client/src/app/site/assignments/models/view-assignment-poll-option.ts

@@ -12,40 +12,14 @@ export class ViewAssignmentPollOption extends BaseViewModel<AssignmentPollOption
     public static COLLECTIONSTRING = AssignmentPollOption.COLLECTIONSTRING;
     protected _collectionString = AssignmentPollOption.COLLECTIONSTRING;
 
-    private _user?: ViewUser; // This is the "candidate". We'll stay consistent wich user here...
-
     public get option(): AssignmentPollOption {
         return this._model;
     }
 
-    /**
-     * Note: "User" instead of "candidate" to be consistent.
-     */
-    public get user(): ViewUser | null {
-        return this._user;
-    }
-
-    public get id(): number {
-        return this.option.id;
-    }
-
-    public get user_id(): number {
-        return this.option.user_id;
-    }
-
-    public get is_elected(): boolean {
-        return this.option.is_elected;
-    }
-
     public get votes(): AssignmentOptionVote[] {
         return this.option.votes.sort((a, b) => votesOrder.indexOf(a.value) - votesOrder.indexOf(b.value));
     }
-
-    public get poll_id(): number {
-        return this.option.poll_id;
-    }
-
-    public get weight(): number {
-        return this.option.weight;
 }
+export interface ViewAssignmentPollOption extends AssignmentPollOption {
+    user: ViewUser;
 }

client/src/app/site/assignments/models/view-assignment-poll.ts

@@ -1,87 +1,17 @@
-import { AssignmentPoll } from 'app/shared/models/assignments/assignment-poll';
+import { AssignmentPoll, AssignmentPollWithoutNestedModels } from 'app/shared/models/assignments/assignment-poll';
 import { AssignmentPollOption } from 'app/shared/models/assignments/assignment-poll-option';
 import { BaseProjectableViewModel } from 'app/site/base/base-projectable-view-model';
 import { ProjectorElementBuildDeskriptor } from 'app/site/base/projectable';
-import { AssignmentPollMethod } from '../services/assignment-poll.service';
 import { ViewAssignmentPollOption } from './view-assignment-poll-option';
 
 export class ViewAssignmentPoll extends BaseProjectableViewModel<AssignmentPoll> {
     public static COLLECTIONSTRING = AssignmentPoll.COLLECTIONSTRING;
     protected _collectionString = AssignmentPoll.COLLECTIONSTRING;
 
-    private _options: ViewAssignmentPollOption[];
-
     public get poll(): AssignmentPoll {
         return this._model;
     }
 
-    public get options(): ViewAssignmentPollOption[] {
-        return this._options;
-    }
-
-    public get id(): number {
-        return this.poll.id;
-    }
-
-    public get pollmethod(): AssignmentPollMethod {
-        return this.poll.pollmethod;
-    }
-
-    public get description(): string {
-        return this.poll.description;
-    }
-
-    public get published(): boolean {
-        return this.poll.published;
-    }
-
-    public get votesno(): number {
-        return this.poll.votesno;
-    }
-    public set votesno(amount: number) {
-        this.poll.votesno = amount;
-    }
-
-    public get votesabstain(): number {
-        return this.poll.votesabstain;
-    }
-    public set votesabstain(amount: number) {
-        this.poll.votesabstain = amount;
-    }
-
-    public get votesvalid(): number {
-        return this.poll.votesvalid;
-    }
-    public set votesvalid(amount: number) {
-        this.poll.votesvalid = amount;
-    }
-
-    public get votesinvalid(): number {
-        return this.poll.votesinvalid;
-    }
-    public set votesinvalid(amount: number) {
-        this.poll.votesinvalid = amount;
-    }
-
-    public get votescast(): number {
-        return this.poll.votescast;
-    }
-    public set votescast(amount: number) {
-        this.poll.votescast = amount;
-    }
-
-    public get has_votes(): boolean {
-        return this.poll.has_votes;
-    }
-
-    public get assignment_id(): number {
-        return this.poll.assignment_id;
-    }
-
-    public getTitle = () => {
-        return 'Poll';
-    };
-
     public getListTitle = () => {
         return this.getTitle();
     };
@@ -90,6 +20,20 @@ export class ViewAssignmentPoll extends BaseProjectableViewModel<AssignmentPoll>
         return this.getTitle();
     };
 
+    public getSlide(): ProjectorElementBuildDeskriptor {
+        return {
+            getBasicProjectorElement: options => ({
+                name: 'assignments/poll',
+                assignment_id: this.assignment_id,
+                poll_id: this.id,
+                getIdentifiers: () => ['name', 'assignment_id', 'poll_id']
+            }),
+            slideOptions: [],
+            projectionDefaultName: 'assignments',
+            getDialogTitle: () => 'TODO'
+        };
+    }
+
     /**
      * Creates a copy with deep-copy on all changing numerical values,
      * but intact uncopied references to the users
@@ -107,18 +51,8 @@ export class ViewAssignmentPoll extends BaseProjectableViewModel<AssignmentPoll>
         });
         return poll;
     }
+}
 
-    public getSlide(): ProjectorElementBuildDeskriptor {
+export interface ViewAssignmentPoll extends AssignmentPollWithoutNestedModels {
-        return {
+    options: ViewAssignmentPollOption[];
-            getBasicProjectorElement: options => ({
-                name: 'assignments/poll',
-                assignment_id: this.assignment_id,
-                poll_id: this.id,
-                getIdentifiers: () => ['name', 'assignment_id', 'poll_id']
-            }),
-            slideOptions: [],
-            projectionDefaultName: 'assignments',
-            getDialogTitle: () => 'TODO'
-        };
-    }
 }

client/src/app/site/assignments/models/view-assignment-related-user.ts

@@ -6,39 +6,15 @@ export class ViewAssignmentRelatedUser extends BaseViewModel<AssignmentRelatedUs
     public static COLLECTIONSTRING = AssignmentRelatedUser.COLLECTIONSTRING;
     protected _collectionString = AssignmentRelatedUser.COLLECTIONSTRING;
 
-    private _user?: ViewUser;
-
     public get assignmentRelatedUser(): AssignmentRelatedUser {
         return this._model;
     }
 
-    public get user(): ViewUser {
+    public getListTitle = () => {
-        return this._user;
+        return this.getTitle();
-    }
-
-    public get id(): number {
-        return this.assignmentRelatedUser.id;
-    }
-
-    public get user_id(): number {
-        return this.assignmentRelatedUser.user_id;
-    }
-
-    public get assignment_id(): number {
-        return this.assignmentRelatedUser.assignment_id;
-    }
-
-    public get elected(): boolean {
-        return this.assignmentRelatedUser.elected;
-    }
-
-    public get weight(): number {
-        return this.assignmentRelatedUser.weight;
-    }
-
-    public getListTitle: () => string = this.getTitle;
-
-    public getTitle: () => string = () => {
-        return this.user ? this.user.getFullName() : '';
     };
 }
+
+export interface ViewAssignmentRelatedUser extends AssignmentRelatedUser {
+    user?: ViewUser;
+}

client/src/app/site/assignments/models/view-assignment.ts

@@ -1,5 +1,5 @@
 import { SearchRepresentation } from 'app/core/ui-services/search.service';
-import { Assignment } from 'app/shared/models/assignments/assignment';
+import { Assignment, AssignmentWithoutNestedModels } from 'app/shared/models/assignments/assignment';
 import { TitleInformationWithAgendaItem } from 'app/site/base/base-view-model-with-agenda-item';
 import { BaseViewModelWithAgendaItemAndListOfSpeakers } from 'app/site/base/base-view-model-with-agenda-item-and-list-of-speakers';
 import { ProjectorElementBuildDeskriptor } from 'app/site/base/projectable';
@@ -41,60 +41,18 @@ export class ViewAssignment extends BaseViewModelWithAgendaItemAndListOfSpeakers
     public static COLLECTIONSTRING = Assignment.COLLECTIONSTRING;
     protected _collectionString = Assignment.COLLECTIONSTRING;
 
-    private _assignment_related_users?: ViewAssignmentRelatedUser[];
-    private _polls?: ViewAssignmentPoll[];
-    private _tags?: ViewTag[];
-    private _attachments?: ViewMediafile[];
-
     public get assignment(): Assignment {
         return this._model;
     }
 
-    public get polls(): ViewAssignmentPoll[] {
-        return this._polls || [];
-    }
-
-    public get title(): string {
-        return this.assignment.title;
-    }
-
-    public get open_posts(): number {
-        return this.assignment.open_posts;
-    }
-
-    public get description(): string {
-        return this.assignment.description;
-    }
-
-    public get candidates(): ViewUser[] {
-        return this.assignment_related_users.map(aru => aru.user).filter(x => !!x);
-    }
-
-    public get assignment_related_users(): ViewAssignmentRelatedUser[] {
-        return this._assignment_related_users || [];
-    }
-
-    public get tags(): ViewTag[] {
-        return this._tags || [];
-    }
-
-    public get tags_id(): number[] {
-        return this.assignment.tags_id;
-    }
-
-    public get attachments(): ViewMediafile[] {
-        return this._attachments || [];
-    }
-
-    public get attachments_id(): number[] {
-        return this.assignment.attachments_id;
-    }
-
     /**
-     * unknown where the identifier to the phase is get
+     * TODO: Fix assignment creation: DO NOT create a ViewUser there...
      */
-    public get phase(): number {
+    public get candidates(): ViewUser[] {
-        return this.assignment.phase;
+        if (!this.assignment_related_users) {
+            return [];
+        }
+        return this.assignment_related_users.map(aru => aru.user).filter(x => !!x);
     }
 
     public get phaseString(): string {
@@ -123,7 +81,7 @@ export class ViewAssignment extends BaseViewModelWithAgendaItemAndListOfSpeakers
      * @returns the amount of candidates in the assignment's candidate list
      */
     public get candidateAmount(): number {
-        return this._assignment_related_users ? this._assignment_related_users.length : 0;
+        return this.assignment_related_users.length;
     }
 
     public formatForSearch(): SearchRepresentation {
@@ -147,3 +105,11 @@ export class ViewAssignment extends BaseViewModelWithAgendaItemAndListOfSpeakers
         };
     }
 }
+interface IAssignmentRelations {
+    assignment_related_users: ViewAssignmentRelatedUser[];
+    polls?: ViewAssignmentPoll[];
+    tags?: ViewTag[];
+    attachments?: ViewMediafile[];
+}
+
+export interface ViewAssignment extends AssignmentWithoutNestedModels, IAssignmentRelations {}

client/src/app/site/base/base-view-model-with-agenda-item-and-list-of-speakers.ts

@@ -1,13 +1,11 @@
-import { SearchRepresentation } from 'app/core/ui-services/search.service';
+import { applyMixins } from 'app/core/mixins';
 import { BaseModelWithAgendaItemAndListOfSpeakers } from 'app/shared/models/base/base-model-with-agenda-item-and-list-of-speakers';
 import { BaseProjectableViewModel } from './base-projectable-view-model';
-import { IBaseViewModelWithAgendaItem, isBaseViewModelWithAgendaItem } from './base-view-model-with-agenda-item';
+import { BaseViewModelWithAgendaItem, isBaseViewModelWithAgendaItem } from './base-view-model-with-agenda-item';
 import {
-    IBaseViewModelWithListOfSpeakers,
+    BaseViewModelWithListOfSpeakers,
     isBaseViewModelWithListOfSpeakers
 } from './base-view-model-with-list-of-speakers';
-import { ViewItem } from '../agenda/models/view-item';
-import { ViewListOfSpeakers } from '../agenda/models/view-list-of-speakers';
 
 export function isBaseViewModelWithAgendaItemAndListOfSpeakers(
     obj: any
@@ -15,54 +13,15 @@ export function isBaseViewModelWithAgendaItemAndListOfSpeakers(
     return !!obj && isBaseViewModelWithAgendaItem(obj) && isBaseViewModelWithListOfSpeakers(obj);
 }
 
-/**
- * Base view class for view models with an agenda item and a list of speakers associated.
- */
 export abstract class BaseViewModelWithAgendaItemAndListOfSpeakers<
     M extends BaseModelWithAgendaItemAndListOfSpeakers = any
-> extends BaseProjectableViewModel implements IBaseViewModelWithAgendaItem<M>, IBaseViewModelWithListOfSpeakers<M> {
+> extends BaseProjectableViewModel<M> {}
-    protected _item?: ViewItem;
-    protected _list_of_speakers?: ViewListOfSpeakers;
 
-    public get agendaItem(): ViewItem | null {
+export interface BaseViewModelWithAgendaItemAndListOfSpeakers<M extends BaseModelWithAgendaItemAndListOfSpeakers = any>
-        return this._item;
+    extends BaseViewModelWithAgendaItem<M>,
-    }
+        BaseViewModelWithListOfSpeakers<M> {}
 
-    public get agenda_item_id(): number {
+applyMixins(BaseViewModelWithAgendaItemAndListOfSpeakers, [
-        return this._model.agenda_item_id;
+    BaseViewModelWithAgendaItem,
-    }
+    BaseViewModelWithListOfSpeakers
-
+]);
-    public get agenda_item_number(): string | null {
-        return this.agendaItem && this.agendaItem.itemNumber ? this.agendaItem.itemNumber : null;
-    }
-
-    public get listOfSpeakers(): ViewListOfSpeakers | null {
-        return this._list_of_speakers;
-    }
-
-    public get list_of_speakers_id(): number {
-        return this._model.list_of_speakers_id;
-    }
-
-    public getAgendaSlideTitle: () => string;
-    public getAgendaListTitle: () => string;
-    public getAgendaListTitleWithoutItemNumber: () => string;
-    public getAgendaSubtitle: () => string | null;
-    public getListOfSpeakersTitle: () => string;
-    public getListOfSpeakersSlideTitle: () => string;
-
-    /**
-     * @returns the (optional) descriptive text to be exported in the CSV.
-     * May be overridden by inheriting classes
-     */
-    public getCSVExportText(): string {
-        return '';
-    }
-
-    public abstract getDetailStateURL(): string;
-
-    /**
-     * Should return a string representation of the object, so there can be searched for.
-     */
-    public abstract formatForSearch(): SearchRepresentation;
-}

client/src/app/site/base/base-view-model-with-agenda-item.ts

@@ -13,9 +13,11 @@ export function isBaseViewModelWithAgendaItem(obj: any): obj is BaseViewModelWit
         isSearchable(model) &&
         model.getAgendaSlideTitle !== undefined &&
         model.getAgendaListTitle !== undefined &&
+        model.getAgendaSubtitle !== undefined &&
         model.getCSVExportText !== undefined &&
-        model.agendaItem !== undefined &&
+        model.item !== undefined &&
-        model.agenda_item_id !== undefined
+        model.getModel !== undefined &&
+        model.getModel().agenda_item_id !== undefined
     );
 }
 
@@ -26,15 +28,11 @@ export interface TitleInformationWithAgendaItem extends TitleInformation {
 /**
  * Describes a base class for view models.
  */
-export interface IBaseViewModelWithAgendaItem<M extends BaseModelWithAgendaItem = any>
+export interface BaseViewModelWithAgendaItem<M extends BaseModelWithAgendaItem = any>
     extends BaseProjectableViewModel<M>,
         DetailNavigable,
         Searchable {
-    agendaItem: any | null;
+    item: any | null;
-
-    agenda_item_id: number;
-
-    agenda_item_number: string | null;
 
     /**
      * @returns the agenda title
@@ -46,21 +44,10 @@ export interface IBaseViewModelWithAgendaItem<M extends BaseModelWithAgendaItem
      */
     getAgendaListTitle: () => string;
 
-    /**
-     * @return an optional subtitle for the agenda.
-     */
-    getAgendaSubtitle: () => string | null;
-
     /**
      * @return the agenda title with the verbose name of the content object
      */
     getAgendaListTitleWithoutItemNumber: () => string;
-
-    /**
-     * @returns the (optional) descriptive text to be exported in the CSV.
-     * May be overridden by inheriting classes
-     */
-    getCSVExportText(): string;
 }
 
 /**
@@ -68,41 +55,11 @@ export interface IBaseViewModelWithAgendaItem<M extends BaseModelWithAgendaItem
  *
  * TODO: Resolve circular dependencies with `ViewItem` to avoid `any`.
  */
-export abstract class BaseViewModelWithAgendaItem<M extends BaseModelWithAgendaItem = any>
+export abstract class BaseViewModelWithAgendaItem<
-    extends BaseProjectableViewModel<M>
+    M extends BaseModelWithAgendaItem = any
-    implements IBaseViewModelWithAgendaItem<M> {
+> extends BaseProjectableViewModel<M> {
-    protected _item?: any;
-
-    public get agendaItem(): any | null {
-        return this._item;
-    }
-
-    public get agenda_item_id(): number {
-        return this._model.agenda_item_id;
-    }
-
     public get agenda_item_number(): string | null {
-        return this.agendaItem && this.agendaItem.itemNumber ? this.agendaItem.itemNumber : null;
+        return this.item && this.item.item_number ? this.item.item_number : null;
-    }
-
-    /**
-     * @returns the agenda title for the item slides
-     */
-    public getAgendaSlideTitle: () => string;
-
-    /**
-     * @return the agenda title for the list view
-     */
-    public getAgendaListTitle: () => string;
-
-    /**
-     * @return the agenda title without any item number.
-     */
-    public getAgendaListTitleWithoutItemNumber: () => string;
-
-    public constructor(model: M, item?: any) {
-        super(model);
-        this._item = item || null; // Explicit set to null instead of undefined, if not given
     }
 
     /**

client/src/app/site/base/base-view-model-with-content-object.ts

@@ -13,13 +13,14 @@ export abstract class BaseViewModelWithContentObject<
     M extends BaseModelWithContentObject = any,
     C extends BaseViewModel = any
 > extends BaseViewModel<M> {
-    protected _contentObject?: C;
-
     public get contentObjectData(): ContentObject {
         return this.getModel().content_object;
     }
+}
 
-    public get contentObject(): C | null {
+export interface BaseViewModelWithContentObject<
-        return this._contentObject;
+    M extends BaseModelWithContentObject = any,
-    }
+    C extends BaseViewModel = any
+> {
+    contentObject: C | null;
 }

client/src/app/site/base/base-view-model-with-list-of-speakers.ts

@@ -9,50 +9,19 @@ export function isBaseViewModelWithListOfSpeakers(obj: any): obj is BaseViewMode
         isDetailNavigable(model) &&
         model.getListOfSpeakersTitle !== undefined &&
         model.listOfSpeakers !== undefined &&
-        model.list_of_speakers_id !== undefined
+        model.getModel !== undefined &&
+        model.getModel().list_of_speakers_id !== undefined
     );
 }
 
-/**
+export interface BaseViewModelWithListOfSpeakers<M extends BaseModelWithListOfSpeakers = any> extends DetailNavigable {
- * Describes a base view model with a list of speakers.
- */
-export interface IBaseViewModelWithListOfSpeakers<M extends BaseModelWithListOfSpeakers = any>
-    extends BaseProjectableViewModel<M>,
-        DetailNavigable {
     listOfSpeakers: any | null;
-
-    list_of_speakers_id: number;
-
     getListOfSpeakersTitle: () => string;
-
     getListOfSpeakersSlideTitle: () => string;
 }
 
-/**
+export abstract class BaseViewModelWithListOfSpeakers<
- * Base view model class for models with a list of speakers.
+    M extends BaseModelWithListOfSpeakers = any
- *
+> extends BaseProjectableViewModel<M> {
- * TODO: Resolve circular dependencies with `ViewListOfSpeakers` to avoid `any`.
- */
-export abstract class BaseViewModelWithListOfSpeakers<M extends BaseModelWithListOfSpeakers = any>
-    extends BaseProjectableViewModel<M>
-    implements IBaseViewModelWithListOfSpeakers<M> {
-    protected _list_of_speakers?: any;
-
-    public get listOfSpeakers(): any | null {
-        return this._list_of_speakers;
-    }
-
-    public get list_of_speakers_id(): number {
-        return this._model.list_of_speakers_id;
-    }
-
-    public getListOfSpeakersTitle: () => string;
-    public getListOfSpeakersSlideTitle: () => string;
-
-    public constructor(model: M, listOfSpeakers?: any) {
-        super(model);
-        this._list_of_speakers = listOfSpeakers || null; // Explicit set to null instead of undefined, if not given
-    }
-
     public abstract getDetailStateURL(): string;
 }

client/src/app/site/base/base-view-model.ts

@@ -11,47 +11,16 @@ export interface ViewModelConstructor<T extends BaseViewModel> {
 }
 
 /**
- * Base class for view models. alls view models should have titles.
+ * Base class for view models.
  */
-export abstract class BaseViewModel<M extends BaseModel = any> implements Displayable, Identifiable, Collection {
+export abstract class BaseViewModel<M extends BaseModel = any> {
-    public get id(): number {
-        return this._model.id;
-    }
-
-    /**
-     * force children of BaseModel to have a collectionString.
-     *
-     * Has a getter but no setter.
-     */
-    protected _collectionString: string;
-
-    /**
-     * returns the collectionString.
-     *
-     * The server and the dataStore use it to identify the collection.
-     */
-    public get collectionString(): string {
-        return this._collectionString;
-    }
-
     /**
      * @returns the element id of the model
      */
     public get elementId(): string {
-        return `${this.collectionString}:${this.id}`;
+        return this._model.elementId;
     }
 
-    public getTitle: () => string;
-    public getListTitle: () => string;
-
-    /**
-     * Returns the verbose name.
-     *
-     * @param plural If the name should be plural
-     * @returns the verbose name of the model
-     */
-    public getVerboseName: (plural?: boolean) => string;
-
     /**
      * @param collectionString
      * @param model
@@ -64,8 +33,25 @@ export abstract class BaseViewModel<M extends BaseModel = any> implements Displa
     public getModel(): M {
         return this._model;
     }
-
     public toString(): string {
         return this.getTitle();
     }
+    public toJSON(): M {
+        return this.getModel();
+    }
+    public getUpdatedModel(update: Partial<M>): M {
+        return this.getModel().getUpdatedVersion(update);
+    }
+}
+export interface BaseViewModel<M extends BaseModel = any> extends Displayable, Identifiable, Collection {
+    getTitle: () => string;
+    getListTitle: () => string;
+
+    /**
+     * Returns the verbose name.
+     *
+     * @param plural If the name should be plural
+     * @returns the verbose name of the model
+     */
+    getVerboseName: (plural?: boolean) => string;
 }

client/src/app/site/common/components/super-search/super-search.component.html

@@ -98,7 +98,7 @@
         </div>
         <mat-divider [vertical]="true"></mat-divider>
         <div *ngIf="showPreview" class="result-preview flex-1">
-            <div *ngIf="!!selectedModel">
+            <div *ngIf="selectedModel">
                 <os-preview [viewModel]="selectedModel"> </os-preview>
             </div>
         </div>

client/src/app/site/common/components/super-search/super-search.component.ts

@@ -376,7 +376,7 @@ export class SuperSearchComponent implements OnInit {
             event.preventDefault();
             event.stopPropagation();
         }
-        if (!!this.selectedModel) {
+        if (this.selectedModel) {
             if (event.key === 'Enter') {
                 this.viewResult(this.selectedModel);
             }

client/src/app/site/mediafiles/models/view-mediafile.ts

@@ -1,5 +1,5 @@
 import { SearchRepresentation } from 'app/core/ui-services/search.service';
-import { Mediafile } from 'app/shared/models/mediafiles/mediafile';
+import { Mediafile, MediafileWithoutNestedModels } from 'app/shared/models/mediafiles/mediafile';
 import { BaseViewModelWithListOfSpeakers } from 'app/site/base/base-view-model-with-list-of-speakers';
 import { ProjectorElementBuildDeskriptor } from 'app/site/base/projectable';
 import { Searchable } from 'app/site/base/searchable';
@@ -18,72 +18,12 @@ export class ViewMediafile extends BaseViewModelWithListOfSpeakers<Mediafile>
     public static COLLECTIONSTRING = Mediafile.COLLECTIONSTRING;
     protected _collectionString = Mediafile.COLLECTIONSTRING;
 
-    private _parent?: ViewMediafile;
-    private _access_groups?: ViewGroup[];
-    private _inherited_access_groups?: ViewGroup[];
-
     public get mediafile(): Mediafile {
         return this._model;
     }
 
-    public get parent(): ViewMediafile | null {
-        return this._parent;
-    }
-
-    public get access_groups(): ViewGroup[] {
-        return this._access_groups || [];
-    }
-
-    public get access_groups_id(): number[] {
-        return this.mediafile.access_groups_id;
-    }
-
-    public get inherited_access_groups(): ViewGroup[] | null {
-        return this._inherited_access_groups;
-    }
-
-    public get inherited_access_groups_id(): boolean | number[] {
-        return this.mediafile.inherited_access_groups_id;
-    }
-
-    public get has_inherited_access_groups(): boolean {
-        return this.mediafile.has_inherited_access_groups;
-    }
-
-    public get title(): string {
-        return this.filename;
-    }
-
     public get filename(): string {
-        return this.mediafile.title;
+        return this.title;
-    }
-
-    public get path(): string {
-        return this.mediafile.path;
-    }
-
-    public get parent_id(): number {
-        return this.mediafile.parent_id;
-    }
-
-    public get is_directory(): boolean {
-        return this.mediafile.is_directory;
-    }
-
-    public get is_file(): boolean {
-        return !this.is_directory;
-    }
-
-    public get size(): string | null {
-        return this.mediafile.filesize;
-    }
-
-    public get prefix(): string {
-        return this.mediafile.media_url_prefix;
-    }
-
-    public get url(): string {
-        return this.mediafile.url;
     }
 
     public get type(): string | null {
@@ -105,7 +45,7 @@ export class ViewMediafile extends BaseViewModelWithListOfSpeakers<Mediafile>
             { key: 'Path', value: this.path },
             { key: 'Type', value: type },
             { key: 'Timestamp', value: this.timestamp },
-            { key: 'Size', value: this.size ? this.size : '0' }
+            { key: 'Size', value: this.filesize ? this.filesize : '0' }
         ];
         return {
             properties,
@@ -114,6 +54,10 @@ export class ViewMediafile extends BaseViewModelWithListOfSpeakers<Mediafile>
         };
     }
 
+    public get url(): string {
+        return this.mediafile.url;
+    }
+
     public getDetailStateURL(): string {
         return this.is_directory ? ('/mediafiles/files/' + this.path).slice(0, -1) : this.url;
     }
@@ -205,3 +149,9 @@ export class ViewMediafile extends BaseViewModelWithListOfSpeakers<Mediafile>
         }
     }
 }
+interface IMediafileRelations {
+    parent?: ViewMediafile;
+    access_groups?: ViewGroup[];
+    inherited_access_groups?: ViewGroup[];
+}
+export interface ViewMediafile extends MediafileWithoutNestedModels, IMediafileRelations {}

client/src/app/site/mediafiles/services/mediafiles-sort-list.service.ts

@@ -27,7 +27,7 @@ export class MediafilesSortListService extends BaseSortListService<ViewMediafile
             label: this.translate.instant('Type')
         },
         {
-            property: 'size',
+            property: 'filesize',
             label: this.translate.instant('Size')
         }
     ];

client/src/app/site/motions/models/view-category.ts

@@ -20,18 +20,10 @@ export class ViewCategory extends BaseViewModel<Category> implements CategoryTit
     public static COLLECTIONSTRING = Category.COLLECTIONSTRING;
     protected _collectionString = Category.COLLECTIONSTRING;
 
-    private _parent?: ViewCategory;
-    private _children?: ViewCategory[];
-    private _motions?: ViewMotion[];
-
     public get category(): Category {
         return this._model;
     }
 
-    public get parent(): ViewCategory | null {
-        return this._parent;
-    }
-
     public get oldestParent(): ViewCategory {
         if (!this.parent_id) {
             return this;
@@ -40,34 +32,6 @@ export class ViewCategory extends BaseViewModel<Category> implements CategoryTit
         }
     }
 
-    public get children(): ViewCategory[] {
-        return this._children || [];
-    }
-
-    public get motions(): ViewMotion[] {
-        return this._motions || [];
-    }
-
-    public get name(): string {
-        return this.category.name;
-    }
-
-    public get prefix(): string {
-        return this.category.prefix;
-    }
-
-    public get weight(): number {
-        return this.category.weight;
-    }
-
-    public get parent_id(): number {
-        return this.category.parent_id;
-    }
-
-    public get level(): number {
-        return this.category.level;
-    }
-
     public get prefixedName(): string {
         return this.prefix ? this.prefix + ' - ' + this.name : this.name;
     }
@@ -132,3 +96,9 @@ export class ViewCategory extends BaseViewModel<Category> implements CategoryTit
         }
     }
 }
+interface ICategoryRelations {
+    parent?: ViewCategory;
+    children?: ViewCategory[];
+    motions?: ViewMotion[];
+}
+export interface ViewCategory extends Category, ICategoryRelations {}

client/src/app/site/motions/models/view-create-motion.ts

@@ -33,11 +33,4 @@ export class ViewCreateMotion extends ViewMotion {
     public getVerboseName = () => {
         throw new Error('This should not be used');
     };
-
-    /**
-     * Duplicate this motion into a copy of itself
-     */
-    public copy(): ViewCreateMotion {
-        return new ViewCreateMotion(this._model);
-    }
 }

client/src/app/site/motions/models/view-motion-block.ts

@@ -19,22 +19,9 @@ export class ViewMotionBlock extends BaseViewModelWithAgendaItemAndListOfSpeaker
     public static COLLECTIONSTRING = MotionBlock.COLLECTIONSTRING;
     protected _collectionString = MotionBlock.COLLECTIONSTRING;
 
-    private _motions?: ViewMotion[];
-
     public get motionBlock(): MotionBlock {
         return this._model;
     }
-    public get motions(): ViewMotion[] {
-        return this._motions || [];
-    }
-
-    public get title(): string {
-        return this.motionBlock.title;
-    }
-
-    public get internal(): boolean {
-        return this.motionBlock.internal;
-    }
 
     /**
      * Formats the category for search
@@ -67,3 +54,8 @@ export class ViewMotionBlock extends BaseViewModelWithAgendaItemAndListOfSpeaker
         };
     }
 }
+
+interface IMotionBLockRelations {
+    motions?: ViewMotion[];
+}
+export interface ViewMotionBlock extends MotionBlock, IMotionBLockRelations {}

client/src/app/site/motions/models/view-motion-comment-section.ts

@@ -18,69 +18,13 @@ export class ViewMotionCommentSection extends BaseViewModel<MotionCommentSection
     public static COLLECTIONSTRING = MotionCommentSection.COLLECTIONSTRING;
     protected _collectionString = MotionCommentSection.COLLECTIONSTRING;
 
-    private _read_groups: ViewGroup[];
-    private _write_groups: ViewGroup[];
-
     public get section(): MotionCommentSection {
         return this._model;
     }
-
-    public get id(): number {
-        return this.section.id;
 }
 
-    public get name(): string {
+interface IMotionCommentSectionRelations {
-        return this.section.name;
+    read_groups: ViewGroup[];
-    }
+    write_groups: ViewGroup[];
-
-    public get read_groups_id(): number[] {
-        return this.section.read_groups_id;
-    }
-
-    public get write_groups_id(): number[] {
-        return this.section.write_groups_id;
-    }
-
-    public get read_groups(): ViewGroup[] {
-        return this._read_groups;
-    }
-
-    public get write_groups(): ViewGroup[] {
-        return this._write_groups;
-    }
-
-    public get weight(): number {
-        return this.section.weight;
-    }
-
-    /**
-     * TODO: Where is this needed? Try to avoid this.
-     */
-    public set name(name: string) {
-        this._model.name = name;
-    }
-
-    /**
-     * Updates the local objects if required
-     * @param section
-     */
-    public updateDependencies(update: BaseViewModel): void {
-        if (update instanceof ViewGroup) {
-            if (this.section.read_groups_id.includes(update.id)) {
-                const groupIndex = this.read_groups.findIndex(group => group.id === update.id);
-                if (groupIndex < 0) {
-                    this.read_groups.push(update);
-                } else {
-                    this.read_groups[groupIndex] = update;
-                }
-            } else if (this.section.write_groups_id.includes(update.id)) {
-                const groupIndex = this.write_groups.findIndex(group => group.id === update.id);
-                if (groupIndex < 0) {
-                    this.write_groups.push(update);
-                } else {
-                    this.write_groups[groupIndex] = update;
-                }
-            }
-        }
-    }
 }
+export interface ViewMotionCommentSection extends MotionCommentSection, IMotionCommentSectionRelations {}

client/src/app/site/motions/models/view-motion.ts

@@ -2,7 +2,7 @@ import { _ } from 'app/core/translate/translation-marker';
 import { ConfigService } from 'app/core/ui-services/config.service';
 import { DiffLinesInParagraph } from 'app/core/ui-services/diff.service';
 import { SearchProperty, SearchRepresentation } from 'app/core/ui-services/search.service';
-import { Motion, MotionComment } from 'app/shared/models/motions/motion';
+import { Motion, MotionComment, MotionWithoutNestedModels } from 'app/shared/models/motions/motion';
 import { PersonalNoteContent } from 'app/shared/models/users/personal-note';
 import { TitleInformationWithAgendaItem } from 'app/site/base/base-view-model-with-agenda-item';
 import { BaseViewModelWithAgendaItemAndListOfSpeakers } from 'app/site/base/base-view-model-with-agenda-item-and-list-of-speakers';
@@ -71,176 +71,26 @@ export class ViewMotion extends BaseViewModelWithAgendaItemAndListOfSpeakers<Mot
         return this._model;
     }
 
-    public get category(): ViewCategory | null {
-        return this._category;
-    }
-
-    public get state(): ViewState | null {
-        return this._state;
-    }
-
-    public get recommendation(): ViewState | null {
-        return this._recommendation;
-    }
-
-    public get submitters(): ViewSubmitter[] {
-        return this._submitters || [];
-    }
-
     public get submittersAsUsers(): ViewUser[] {
-        return this.submitters.map(submitter => submitter.user);
+        return (this.submitters || []).map(submitter => submitter.user);
-    }
-
-    public get supporters(): ViewUser[] {
-        return this._supporters || [];
-    }
-
-    /**
-     * TODO: Where is this needed. Try to avoid this..
-     */
-    public set supporters(users: ViewUser[]) {
-        this._supporters = users;
-        this._model.supporters_id = users.map(user => user.id);
-    }
-
-    public get motion_block(): ViewMotionBlock | null {
-        return this._motion_block;
-    }
-
-    public get attachments(): ViewMediafile[] {
-        return this._attachments || [];
-    }
-
-    public get tags(): ViewTag[] {
-        return this._tags || [];
-    }
-
-    public get parent(): ViewMotion | null {
-        return this._parent;
-    }
-
-    public get amendments(): ViewMotion[] {
-        return this._amendments || [];
-    }
-
-    public get identifier(): string {
-        return this.motion.identifier;
-    }
-
-    public get title(): string {
-        return this.motion.title;
     }
 
     public get identifierOrTitle(): string {
         return this.identifier ? this.identifier : this.title;
     }
 
-    public get text(): string {
-        return this.motion.text;
-    }
-
-    public get reason(): string {
-        return this.motion.reason;
-    }
-
-    public get modified_final_version(): string {
-        return this.motion.modified_final_version;
-    }
-
-    public set modified_final_version(value: string) {
-        if (this.motion) {
-            this.motion.modified_final_version = value;
-        }
-    }
-
-    public get weight(): number {
-        return this.motion.weight;
-    }
-
-    public get sort_parent_id(): number {
-        return this.motion.sort_parent_id;
-    }
-
-    public get category_id(): number {
-        return this.motion.category_id;
-    }
-
-    public get category_weight(): number {
-        return this.motion.category_weight;
-    }
-
-    public get sorted_submitters_id(): number[] {
-        return this.motion.sorted_submitters_id;
-    }
-
-    public get supporters_id(): number[] {
-        return this.motion.supporters_id;
-    }
-
-    public get workflow(): ViewWorkflow {
-        return this._workflow;
-    }
-
-    public get workflow_id(): number {
-        return this.motion.workflow_id;
-    }
-
-    public get changeRecommendations(): ViewMotionChangeRecommendation[] {
-        return this._changeRecommendations;
-    }
-
-    public get change_recommendations_id(): number[] {
-        return this.motion.change_recommendations_id;
-    }
-
-    public get state_id(): number {
-        return this.motion.state_id;
-    }
-
-    public get recommendation_id(): number {
-        return this.motion.recommendation_id;
-    }
-
-    public get statute_paragraph_id(): number {
-        return this.motion.statute_paragraph_id;
-    }
-
     public get possibleRecommendations(): ViewState[] {
         return this.workflow ? this.workflow.states.filter(state => state.recommendation_label !== undefined) : null;
     }
 
-    public get origin(): string {
+    public get agenda_type(): number | null {
-        return this.motion.origin;
+        return this.item ? this.item.type : null;
     }
 
-    public get agenda_type(): number {
+    public get speakerAmount(): number | null {
-        return this.agendaItem ? this.agendaItem.type : null;
-    }
-
-    public get motion_block_id(): number {
-        return this.motion.motion_block_id;
-    }
-
-    public get speakerAmount(): number {
         return this.listOfSpeakers ? this.listOfSpeakers.waitingSpeakerAmount : null;
     }
 
-    public get parent_id(): number {
-        return this.motion.parent_id;
-    }
-
-    public get amendment_paragraphs(): string[] {
-        return this.motion.amendment_paragraphs ? this.motion.amendment_paragraphs : [];
-    }
-
-    public get tags_id(): number[] {
-        return this.motion.tags_id;
-    }
-
-    public get attachments_id(): number[] {
-        return this.motion.attachments_id;
-    }
-
     /**
      * @returns the creation date as Date object
      */
@@ -331,20 +181,6 @@ export class ViewMotion extends BaseViewModelWithAgendaItemAndListOfSpeakers<Mot
         return this.state ? this.state.css_class : '';
     }
 
-    /**
-     * getter to access diff lines
-     */
-    public get diffLines(): DiffLinesInParagraph[] {
-        if (!this.parent_id) {
-            throw new Error('No parent No diff');
-        }
-        return this._diffLines;
-    }
-
-    public set diffLines(value: DiffLinesInParagraph[]) {
-        this._diffLines = value;
-    }
-
     /**
      * Determine if a motion has a parent at all
      */
@@ -359,20 +195,6 @@ export class ViewMotion extends BaseViewModelWithAgendaItemAndListOfSpeakers<Mot
         return !!this.amendments && !!this.amendments.length;
     }
 
-    /**
-     * Determine if the motion has parents, is a parent of neither
-     */
-    public get amendmentType(): number {
-        if (this.hasAmendments) {
-            return AmendmentType.Parent;
-        } else if (this.hasParent) {
-            return AmendmentType.Amendment;
-        } else {
-            // not any amendment
-            return 0;
-        }
-    }
-
     /**
      * Get the number of the first diff line, in case a motion is an amendment
      */
@@ -386,19 +208,6 @@ export class ViewMotion extends BaseViewModelWithAgendaItemAndListOfSpeakers<Mot
     public static COLLECTIONSTRING = Motion.COLLECTIONSTRING;
     protected _collectionString = Motion.COLLECTIONSTRING;
 
-    protected _category?: ViewCategory;
-    protected _submitters?: ViewSubmitter[];
-    protected _supporters?: ViewUser[];
-    protected _workflow?: ViewWorkflow;
-    protected _state?: ViewState;
-    protected _recommendation?: ViewState;
-    protected _motion_block?: ViewMotionBlock;
-    protected _attachments?: ViewMediafile[];
-    protected _tags?: ViewTag[];
-    protected _parent?: ViewMotion;
-    protected _amendments?: ViewMotion[];
-    protected _changeRecommendations?: ViewMotionChangeRecommendation[];
-    protected _diffLines?: DiffLinesInParagraph[];
     public personalNote?: PersonalNoteContent;
 
     // This is set by the repository
@@ -412,7 +221,7 @@ export class ViewMotion extends BaseViewModelWithAgendaItemAndListOfSpeakers<Mot
      * @return The lines of the amendment
      */
     public getChangeLines(): string {
-        if (!!this.diffLines) {
+        if (this.diffLines) {
             return this.diffLines
                 .map(diffLine => {
                     if (diffLine.diffLineTo === diffLine.diffLineFrom + 1) {
@@ -521,7 +330,7 @@ export class ViewMotion extends BaseViewModelWithAgendaItemAndListOfSpeakers<Mot
      * specified by amendment_paragraphs-array
      */
     public isParagraphBasedAmendment(): boolean {
-        return this.amendment_paragraphs.length > 0;
+        return this.amendment_paragraphs && this.amendment_paragraphs.length > 0;
     }
 
     public getSlide(configService: ConfigService): ProjectorElementBuildDeskriptor {
@@ -554,11 +363,22 @@ export class ViewMotion extends BaseViewModelWithAgendaItemAndListOfSpeakers<Mot
             getDialogTitle: this.getAgendaSlideTitle
         };
     }
+}
 
-    /**
+interface TIMotionRelations {
-     * Duplicate this motion into a copy of itself
+    category?: ViewCategory;
-     */
+    submitters: ViewSubmitter[];
-    public copy(): ViewMotion {
+    supporters?: ViewUser[];
-        return new ViewMotion(this._model);
+    workflow?: ViewWorkflow;
-    }
+    state?: ViewState;
+    recommendation?: ViewState;
+    motion_block?: ViewMotionBlock;
+    attachments?: ViewMediafile[];
+    tags?: ViewTag[];
+    parent?: ViewMotion;
+    amendments?: ViewMotion[];
+    changeRecommendations?: ViewMotionChangeRecommendation[];
+    diffLines?: DiffLinesInParagraph[];
 }
+
+export interface ViewMotion extends MotionWithoutNestedModels, TIMotionRelations {}

client/src/app/site/motions/models/view-state.ts

@@ -1,4 +1,4 @@
-import { MergeAmendment, State } from 'app/shared/models/motions/state';
+import { State } from 'app/shared/models/motions/state';
 import { BaseViewModel } from '../../base/base-view-model';
 import { ViewWorkflow } from './view-workflow';
 
@@ -14,83 +14,22 @@ export class ViewState extends BaseViewModel<State> implements StateTitleInforma
     public static COLLECTIONSTRING = State.COLLECTIONSTRING;
     protected _collectionString = State.COLLECTIONSTRING;
 
-    private _next_states?: ViewState[];
-    public _workflow?: ViewWorkflow;
-
     public get state(): State {
         return this._model;
     }
 
-    public get workflow(): ViewWorkflow | null {
-        return this._workflow;
-    }
-
-    public get next_states(): ViewState[] {
-        return this._next_states || [];
-    }
-
-    public get name(): string {
-        return this.state.name;
-    }
-
-    public get recommendation_label(): string {
-        return this.state.recommendation_label;
-    }
-
-    public get css_class(): string {
-        return this.state.css_class;
-    }
-
-    public get restriction(): string[] {
-        return this.state.restriction;
-    }
-
-    public get allow_support(): boolean {
-        return this.state.allow_support;
-    }
-
-    public get allow_create_poll(): boolean {
-        return this.state.allow_create_poll;
-    }
-
-    public get allow_submitter_edit(): boolean {
-        return this.state.allow_submitter_edit;
-    }
-
-    public get dont_set_identifier(): boolean {
-        return this.state.dont_set_identifier;
-    }
-
-    public get show_state_extension_field(): boolean {
-        return this.state.show_state_extension_field;
-    }
-
-    public get merge_amendment_into_final(): MergeAmendment {
-        return this.state.merge_amendment_into_final;
-    }
-
-    public get show_recommendation_extension_field(): boolean {
-        return this.state.show_recommendation_extension_field;
-    }
-
-    public get next_states_id(): number[] {
-        return this.state.next_states_id;
-    }
-
-    public get workflow_id(): number {
-        return this.state.workflow_id;
-    }
-
     public get isFinalState(): boolean {
-        return !this.next_states_id || this.next_states_id.length === 0;
+        return (
+            !this.next_states_id ||
+            !this.next_states_id.length ||
+            (this.next_states_id.length === 1 && this.next_states_id[0] === 0)
+        );
+    }
 }
 
-    public get previous_states(): ViewState[] {
+interface IStateRelations {
-        if (!this.workflow) {
+    next_states?: ViewState[];
-            return [];
+    previous_states?: ViewState[];
-        }
+    workflow?: ViewWorkflow;
-        return this.workflow.states.filter(state => {
-            return state.next_states_id.includes(this.id);
-        });
-    }
 }
+export interface ViewState extends State, IStateRelations {}

client/src/app/site/motions/models/view-statute-paragraph.ts

@@ -23,18 +23,6 @@ export class ViewStatuteParagraph extends BaseViewModel<StatuteParagraph>
         return this._model;
     }
 
-    public get title(): string {
-        return this.statuteParagraph.title;
-    }
-
-    public get text(): string {
-        return this.statuteParagraph.text;
-    }
-
-    public get weight(): number {
-        return this.statuteParagraph.weight;
-    }
-
     public formatForSearch(): SearchRepresentation {
         return { properties: [{ key: 'Title', value: this.getTitle() }], searchValue: [this.getTitle()] };
     }
@@ -43,3 +31,4 @@ export class ViewStatuteParagraph extends BaseViewModel<StatuteParagraph>
         return '/motions/statute-paragraphs';
     }
 }
+export interface ViewStatuteParagraph extends StatuteParagraph {}

client/src/app/site/motions/models/view-submitter.ts

@@ -6,37 +6,15 @@ export class ViewSubmitter extends BaseViewModel<Submitter> {
     public static COLLECTIONSTRING = Submitter.COLLECTIONSTRING;
     protected _collectionString = Submitter.COLLECTIONSTRING;
 
-    private _user?: ViewUser;
-
     public get submitter(): Submitter {
         return this._model;
     }
 
-    public get user(): ViewUser {
-        return this._user;
-    }
-
-    public get id(): number {
-        return this.submitter.id;
-    }
-
-    public get user_id(): number {
-        return this.submitter.user_id;
-    }
-
-    public get motion_id(): number {
-        return this.submitter.motion_id;
-    }
-
-    public get weight(): number {
-        return this.submitter.weight;
-    }
-
-    public getTitle = () => {
-        return this.user ? this.user.getTitle() : '';
-    };
-
     public getListTitle = () => {
         return this.getTitle();
     };
 }
+interface ISubmitterRelations {
+    user: ViewUser;
+}
+export interface ViewSubmitter extends Submitter, ISubmitterRelations {}

client/src/app/site/motions/models/view-workflow.ts

@@ -14,30 +14,12 @@ export class ViewWorkflow extends BaseViewModel<Workflow> implements WorkflowTit
     public static COLLECTIONSTRING = Workflow.COLLECTIONSTRING;
     protected _collectionString = Workflow.COLLECTIONSTRING;
 
-    private _states?: ViewState[];
-    private _first_state?: ViewState;
-
     public get workflow(): Workflow {
         return this._model;
     }
-
-    public get name(): string {
-        return this.workflow.name;
-    }
-
-    public get states(): ViewState[] {
-        return this._states || [];
-    }
-
-    public get states_id(): number[] {
-        return this.workflow.states_id;
-    }
-
-    public get first_state_id(): number {
-        return this.workflow.first_state_id;
-    }
-
-    public get first_state(): ViewState | null {
-        return this._first_state;
 }
+interface IWorkflowRelations {
+    states?: ViewState[];
+    first_state?: ViewState;
 }
+export interface ViewWorkflow extends Workflow, IWorkflowRelations {}

client/src/app/site/motions/modules/amendment-list/amendment-list.component.ts

@@ -110,7 +110,7 @@ export class AmendmentListComponent extends BaseListViewComponent<ViewMotion> im
 
     public ngOnInit(): void {
         // determine if a paramter exists.
-        if (!!this.route.snapshot.paramMap.get('id')) {
+        if (this.route.snapshot.paramMap.get('id')) {
             // set the parentMotion observable. This will "only" fire
             // if there is a subscription to the parent motion
             this.parentMotion = this.route.paramMap.pipe(
@@ -133,7 +133,7 @@ export class AmendmentListComponent extends BaseListViewComponent<ViewMotion> im
      */
     public getAmendmentSummary(amendment: ViewMotion): string {
         const diffLines = amendment.diffLines;
-        if (!!diffLines) {
+        if (diffLines) {
             return diffLines
                 .map(diffLine => {
                     return this.linenumberingService.stripLineNumbers(diffLine.text);

client/src/app/site/motions/modules/category/components/category-detail/category-detail.component.ts

@@ -220,7 +220,7 @@ export class CategoryDetailComponent extends BaseViewComponent implements OnInit
         const title = this.translate.instant('Are you sure you want to renumber all motions of this category?');
         const content = this.selectedCategory.getTitle();
         if (await this.promptService.open(title, content)) {
-            await this.repo.numberMotionsInCategory(this.selectedCategory).then(null, this.raiseError);
+            await this.repo.numberMotionsInCategory(this.selectedCategory).catch(this.raiseError);
         }
     }
 }

client/src/app/site/motions/modules/motion-block/components/motion-block-detail/motion-block-detail.component.html

@@ -118,11 +118,11 @@
     <os-projector-button *ngIf="block" [object]="block" [menuItem]="true"></os-projector-button>
 
     <div *osPerms="'agenda.can_manage'">
-        <button mat-menu-item (click)="addToAgenda()" *ngIf="block && !block.agendaItem">
+        <button mat-menu-item (click)="addToAgenda()" *ngIf="block && !block.item">
             <mat-icon>add</mat-icon>
             <span translate>Add to agenda</span>
         </button>
-        <button mat-menu-item (click)="removeFromAgenda()" *ngIf="block && block.agendaItem">
+        <button mat-menu-item (click)="removeFromAgenda()" *ngIf="block && block.item">
             <mat-icon>remove</mat-icon>
             <span translate>Remove from agenda</span>
         </button>

client/src/app/site/motions/modules/motion-block/components/motion-block-detail/motion-block-detail.component.ts

@@ -254,10 +254,10 @@ export class MotionBlockDetailComponent extends BaseListViewComponent<ViewMotion
     }
 
     public addToAgenda(): void {
-        this.itemRepo.addItemToAgenda(this.block).then(null, this.raiseError);
+        this.itemRepo.addItemToAgenda(this.block).catch(this.raiseError);
     }
 
     public removeFromAgenda(): void {
-        this.itemRepo.removeFromAgenda(this.block.agendaItem).then(null, this.raiseError);
+        this.itemRepo.removeFromAgenda(this.block.item).catch(this.raiseError);
     }
 }

client/src/app/site/motions/modules/motion-comment-section/components/motion-comment-section-sort/motion-comment-section-sort.component.ts

@@ -53,6 +53,6 @@ export class MotionCommentSectionSortComponent extends BaseViewComponent impleme
      * @param commentsInOrder
      */
     public onSortingChange(commentsInOrder: ViewMotionCommentSection[]): void {
-        this.repo.sortCommentSections(commentsInOrder).then(null, this.raiseError);
+        this.repo.sortCommentSections(commentsInOrder).catch(this.raiseError);
     }
 }

client/src/app/site/motions/modules/motion-detail/components/motion-detail-diff/motion-detail-diff.component.ts

@@ -282,7 +282,7 @@ export class MotionDetailDiffComponent extends BaseViewComponent implements Afte
      * @param {boolean} internal
      */
     public setInternal(change: ViewMotionChangeRecommendation, internal: boolean): void {
-        this.recoRepo.setInternal(change, internal).then(null, this.raiseError);
+        this.recoRepo.setInternal(change, internal).catch(this.raiseError);
     }
 
     /**
@@ -297,7 +297,7 @@ export class MotionDetailDiffComponent extends BaseViewComponent implements Afte
         $event.preventDefault();
         const title = this.translate.instant('Are you sure you want to delete this change recommendation?');
         if (await this.promptService.open(title)) {
-            this.recoRepo.delete(reco).then(null, this.raiseError);
+            this.recoRepo.delete(reco).catch(this.raiseError);
         }
     }
 

client/src/app/site/motions/modules/motion-detail/components/motion-detail/motion-detail.component.html

@@ -73,11 +73,11 @@
             ></os-projector-button>
             <!-- Add/remove to/from agenda -->
             <div *osPerms="'agenda.can_manage'">
-                <button mat-menu-item (click)="addToAgenda()" *ngIf="motion && !motion.agendaItem">
+                <button mat-menu-item (click)="addToAgenda()" *ngIf="motion && !motion.item">
                     <mat-icon>add</mat-icon>
                     <span translate>Add to agenda</span>
                 </button>
-                <button mat-menu-item (click)="removeFromAgenda()" *ngIf="motion && motion.agendaItem">
+                <button mat-menu-item (click)="removeFromAgenda()" *ngIf="motion && motion.item">
                     <mat-icon>remove</mat-icon>
                     <span translate>Remove from agenda</span>
                 </button>
@@ -614,7 +614,6 @@
                         autofocus
                         placeholder="{{ 'Identifier' | translate }}"
                         formControlName="identifier"
-                        [value]="motionCopy.identifier || ''"
                     />
                 </mat-form-field>
             </div>
@@ -626,7 +625,6 @@
                         matInput
                         placeholder="{{ 'Title' | translate }}"
                         formControlName="title"
-                        [value]="motionCopy.title"
                         required
                     />
                     <mat-error>{{ 'The title is required' | translate }}</mat-error>
@@ -844,7 +842,6 @@
                             matInput
                             placeholder="{{ 'Origin' | translate }}"
                             formControlName="origin"
-                            [value]="motionCopy.origin"
                         />
                     </mat-form-field>
                 </div>

client/src/app/site/motions/modules/motion-detail/components/motion-detail/motion-detail.component.ts

@@ -203,11 +203,6 @@ export class MotionDetailComponent extends BaseViewComponent implements OnInit,
      */
     public amendmentsEnabled: boolean;
 
-    /**
-     * Copy of the motion that the user might edit
-     */
-    public motionCopy: ViewMotion;
-
     /**
      * All change recommendations to this motion
      */
@@ -645,12 +640,7 @@ export class MotionDetailComponent extends BaseViewComponent implements OnInit,
             // new motion
             this.newMotion = true;
             this.editMotion = true;
-            // prevent 'undefined' to appear in the ui
+            const defaultMotion: Partial<CreateMotion> = {};
-            const defaultMotion: Partial<CreateMotion> = {
-                title: '',
-                origin: '',
-                identifier: ''
-            };
             if (this.route.snapshot.queryParams.parent) {
                 this.amendmentEdit = true;
                 const parentMotion = this.repo.getViewModel(this.route.snapshot.queryParams.parent);
@@ -676,7 +666,6 @@ export class MotionDetailComponent extends BaseViewComponent implements OnInit,
                 }
             }
             this.motion = new ViewCreateMotion(new CreateMotion(defaultMotion));
-            this.motionCopy = new ViewCreateMotion(new CreateMotion(defaultMotion));
         }
     }
 
@@ -836,7 +825,7 @@ export class MotionDetailComponent extends BaseViewComponent implements OnInit,
      */
     private updateMotionFromForm(): void {
         const newMotionValues = { ...this.contentForm.value };
-        this.updateMotion(newMotionValues, this.motionCopy).then(() => {
+        this.updateMotion(newMotionValues, this.motion).then(() => {
             this.editMotion = false;
             this.amendmentEdit = false;
         }, this.raiseError);
@@ -1155,8 +1144,7 @@ export class MotionDetailComponent extends BaseViewComponent implements OnInit,
     public setEditMode(mode: boolean): void {
         this.editMotion = mode;
         if (mode) {
-            this.motionCopy = this.motion.copy();
+            this.patchForm(this.motion);
-            this.patchForm(this.motionCopy);
             this.editNotificationSubscription = this.listenToEditNotification();
             this.sendEditNotification(MotionEditNotificationType.TYPE_BEGIN_EDITING_MOTION);
         }
@@ -1247,14 +1235,14 @@ export class MotionDetailComponent extends BaseViewComponent implements OnInit,
      * Supports the motion (as requested user)
      */
     public support(): void {
-        this.repo.support(this.motion).then(null, this.raiseError);
+        this.repo.support(this.motion).catch(this.raiseError);
     }
 
     /**
      * Unsupports the motion
      */
     public unsupport(): void {
-        this.repo.unsupport(this.motion).then(null, this.raiseError);
+        this.repo.unsupport(this.motion).catch(this.raiseError);
     }
 
     /**
@@ -1271,7 +1259,7 @@ export class MotionDetailComponent extends BaseViewComponent implements OnInit,
      * @param id Motion state id
      */
     public setState(id: number): void {
-        this.repo.setState(this.motion, id).then(null, this.raiseError);
+        this.repo.setState(this.motion, id).catch(this.raiseError);
     }
 
     /**
@@ -1489,7 +1477,7 @@ export class MotionDetailComponent extends BaseViewComponent implements OnInit,
      * @param unsubscriptionReason The reason for the unsubscription.
      */
     private unsubscribeEditNotifications(unsubscriptionReason: MotionEditNotificationType): void {
-        if (!!this.editNotificationSubscription && !this.editNotificationSubscription.closed) {
+        if (this.editNotificationSubscription && !this.editNotificationSubscription.closed) {
             this.sendEditNotification(unsubscriptionReason);
             this.closeSnackBar();
             this.editNotificationSubscription.unsubscribe();
@@ -1529,7 +1517,7 @@ export class MotionDetailComponent extends BaseViewComponent implements OnInit,
         } else {
             this.motion.personalNote.star = !this.motion.personalNote.star;
         }
-        this.personalNoteService.savePersonalNote(this.motion, this.motion.personalNote).then(null, this.raiseError);
+        this.personalNoteService.savePersonalNote(this.motion, this.motion.personalNote).catch(this.raiseError);
     }
 
     /**
@@ -1616,10 +1604,10 @@ export class MotionDetailComponent extends BaseViewComponent implements OnInit,
     }
 
     public addToAgenda(): void {
-        this.itemRepo.addItemToAgenda(this.motion).then(null, this.raiseError);
+        this.itemRepo.addItemToAgenda(this.motion).catch(this.raiseError);
     }
 
     public removeFromAgenda(): void {
-        this.itemRepo.removeFromAgenda(this.motion.agendaItem).then(null, this.raiseError);
+        this.itemRepo.removeFromAgenda(this.motion.item).catch(this.raiseError);
     }
 }

client/src/app/site/motions/modules/motion-list/components/motion-list/motion-list.component.ts

@@ -289,7 +289,7 @@ export class MotionListComponent extends BaseListViewComponent<ViewMotion> imple
         const localCategories = new Set<ViewCategory>();
 
         for (const motion of motions) {
-            if (!motion.category_id) {
+            if (!motion.category) {
                 motionsWithoutCategory++;
             } else {
                 localCategories.add(motion.category.oldestParent);
@@ -429,7 +429,7 @@ export class MotionListComponent extends BaseListViewComponent<ViewMotion> imple
                     };
                     // TODO: "only update if different" was another repo-todo
                     if (!Object.keys(partialUpdate).every(key => partialUpdate[key] === undefined)) {
-                        await this.motionRepo.update(partialUpdate, motion).then(null, this.raiseError);
+                        await this.motionRepo.update(partialUpdate, motion).catch(this.raiseError);
                     }
                 }
             });

client/src/app/site/motions/modules/shared-motion/motion-export-dialog/motion-export-dialog.component.ts

@@ -177,7 +177,7 @@ export class MotionExportDialogComponent implements OnInit {
      * @param nextState The next state the button will assume.
      */
     private changeStateOfButton(button: MatButtonToggle, nextState: boolean): void {
-        if (!!button) {
+        if (button) {
             button.disabled = nextState;
         }
     }
@@ -245,7 +245,7 @@ export class MotionExportDialogComponent implements OnInit {
 
         // restore selection or set default
         this.store.get<MotionExportInfo>('motion_export_selection').then(restored => {
-            if (!!restored) {
+            if (restored) {
                 this.exportForm.patchValue(restored);
             } else {
                 this.exportForm.patchValue(this.defaults);

client/src/app/site/motions/services/amendment-filter-list.service.ts

@@ -90,7 +90,7 @@ export class AmendmentFilterListService extends MotionFilterListService {
      * Function to define a new storage key by parent id
      */
     private updateStorageKey(): void {
-        if (!!this._parentMotionId) {
+        if (this._parentMotionId) {
             this.storageKey = `${this.keyPrefix}_parentId_${this._parentMotionId}`;
         } else {
             this.storageKey = this.keyPrefix;
@@ -104,7 +104,7 @@ export class AmendmentFilterListService extends MotionFilterListService {
      */
     protected preFilter(motions: ViewMotion[]): ViewMotion[] {
         return motions.filter(motion => {
-            if (!!this._parentMotionId) {
+            if (this._parentMotionId) {
                 return motion.parent_id === this._parentMotionId;
             } else {
                 return !!motion.parent_id;

client/src/app/site/motions/services/motion-export.service.ts

@@ -46,7 +46,7 @@ export class MotionExportService {
         if (!exportInfo) {
             return;
         }
-        if (!!exportInfo.format) {
+        if (exportInfo.format) {
             if (exportInfo.format === ExportFileFormat.PDF) {
                 try {
                     this.pdfExport.exportMotionCatalog(data, exportInfo);

client/src/app/site/motions/services/motion-multiselect.service.ts

@@ -201,7 +201,7 @@ export class MotionMultiselectService {
             let requestData = null;
             if (selectedChoice.action === choices[0]) {
                 requestData = motions.map(motion => {
-                    let submitterIds = [...motion.sorted_submitters_id, ...(selectedChoice.items as number[])];
+                    let submitterIds = [...motion.sorted_submitter_ids, ...(selectedChoice.items as number[])];
                     submitterIds = submitterIds.filter((id, index, self) => self.indexOf(id) === index); // remove duplicates
                     return {
                         id: motion.id,
@@ -211,7 +211,7 @@ export class MotionMultiselectService {
             } else if (selectedChoice.action === choices[1]) {
                 requestData = motions.map(motion => {
                     const submitterIdsToRemove = selectedChoice.items as number[];
-                    const submitterIds = motion.sorted_submitters_id.filter(id => !submitterIdsToRemove.includes(id));
+                    const submitterIds = motion.sorted_submitter_ids.filter(id => !submitterIdsToRemove.includes(id));
                     return {
                         id: motion.id,
                         submitters: submitterIds

client/src/app/site/motions/services/motion-pdf.service.ts

@@ -312,7 +312,7 @@ export class MotionPdfService {
         // category
         if (motion.category && (!infoToExport || infoToExport.includes('category'))) {
             let categoryText = '';
-            if (!!motion.category.parent) {
+            if (motion.category.parent) {
                 categoryText = `${motion.category.parent.toString()}\n${this.translate.instant(
                     'Subcategory'
                 )}: ${motion.category.toString()}`;

client/src/app/site/motions/services/motion-xlsx-export.service.ts

@@ -147,11 +147,11 @@ export class MotionXlsxExportService {
             data.push(
                 ...properties.map(property => {
                     const motionProp = motion[property];
-                    if (property === 'speakers') {
+                    /*if (property === 'speakers') {
                         return motion.listOfSpeakers && motion.listOfSpeakers.waitingSpeakerAmount > 0
                             ? motion.listOfSpeakers.waitingSpeakerAmount
                             : '';
-                    }
+                    }*/
                     if (!motionProp) {
                         return '';
                     }

client/src/app/site/projector/components/presentation-control/presentation-control.component.ts

@@ -139,6 +139,6 @@ export class PresentationControlComponent extends BaseViewComponent {
 
     private updateElement(element: MediafileProjectorElement): void {
         const idElement = this.slideManager.getIdentifialbeProjectorElement(element);
-        this.projectorService.updateElement(this.projector.projector, idElement).then(null, this.raiseError);
+        this.projectorService.updateElement(this.projector.projector, idElement).catch(this.raiseError);
     }
 }

client/src/app/site/projector/components/projector-detail/projector-detail.component.ts

@@ -125,7 +125,7 @@ export class ProjectorDetailComponent extends BaseViewComponent implements OnIni
      * @param step (optional) The amount of steps to make.
      */
     public scroll(direction: ScrollScaleDirection, step: number = 1): void {
-        this.repo.scroll(this.projector, direction, step).then(null, this.raiseError);
+        this.repo.scroll(this.projector, direction, step).catch(this.raiseError);
     }
 
     /**
@@ -135,29 +135,29 @@ export class ProjectorDetailComponent extends BaseViewComponent implements OnIni
      * @param step (optional) The amount of steps to make.
      */
     public scale(direction: ScrollScaleDirection, step: number = 1): void {
-        this.repo.scale(this.projector, direction, step).then(null, this.raiseError);
+        this.repo.scale(this.projector, direction, step).catch(this.raiseError);
     }
 
     public projectNextSlide(): void {
-        this.projectorService.projectNextSlide(this.projector.projector).then(null, this.raiseError);
+        this.projectorService.projectNextSlide(this.projector.projector).catch(this.raiseError);
     }
 
     public projectPreviousSlide(): void {
-        this.projectorService.projectPreviousSlide(this.projector.projector).then(null, this.raiseError);
+        this.projectorService.projectPreviousSlide(this.projector.projector).catch(this.raiseError);
     }
 
     public onSortingChange(event: CdkDragDrop<ProjectorElement>): void {
         moveItemInArray(this.projector.elements_preview, event.previousIndex, event.currentIndex);
-        this.projectorService.savePreview(this.projector.projector).then(null, this.raiseError);
+        this.projectorService.savePreview(this.projector.projector).catch(this.raiseError);
     }
 
     public removePreviewElement(elementIndex: number): void {
         this.projector.elements_preview.splice(elementIndex, 1);
-        this.projectorService.savePreview(this.projector.projector).then(null, this.raiseError);
+        this.projectorService.savePreview(this.projector.projector).catch(this.raiseError);
     }
 
     public projectNow(elementIndex: number): void {
-        this.projectorService.projectPreviewSlide(this.projector.projector, elementIndex).then(null, this.raiseError);
+        this.projectorService.projectPreviewSlide(this.projector.projector, elementIndex).catch(this.raiseError);
     }
 
     public getSlideTitle(element: ProjectorElement): string {
@@ -182,7 +182,7 @@ export class ProjectorDetailComponent extends BaseViewComponent implements OnIni
 
     public unprojectCurrent(element: ProjectorElement): void {
         const idElement = this.slideManager.getIdentifialbeProjectorElement(element);
-        this.projectorService.removeFrom(this.projector.projector, idElement).then(null, this.raiseError);
+        this.projectorService.removeFrom(this.projector.projector, idElement).catch(this.raiseError);
     }
 
     public isClosProjected(stable: boolean): boolean {

client/src/app/site/projector/components/projector-list-entry/projector-list-entry.component.ts

@@ -244,7 +244,7 @@ export class ProjectorListEntryComponent extends BaseViewComponent implements On
     public async onDeleteButton(): Promise<void> {
         const title = this.translate.instant('Are you sure you want to delete this projector?');
         if (await this.promptService.open(title, this.projector.name)) {
-            this.repo.delete(this.projector).then(null, this.raiseError);
+            this.repo.delete(this.projector).catch(this.raiseError);
         }
     }
 
@@ -262,7 +262,7 @@ export class ProjectorListEntryComponent extends BaseViewComponent implements On
             width: width
         };
         updateProjector.height = Math.round(width / aspectRatios[aspectRatioKey]);
-        this.repo.update(updateProjector, this.projector).then(null, this.raiseError);
+        this.repo.update(updateProjector, this.projector).catch(this.raiseError);
     }
 
     /**

client/src/app/site/projector/components/projector-list/projector-list.component.html

@@ -5,7 +5,7 @@
     </div>
 </os-head-bar>
 
-<mat-card *ngIf="!projectorToCreate && projectors && projectors.length > 1">
+<mat-card *ngIf="!showCreateForm && projectors && projectors.length > 1">
     <span translate> Reference projector for current list of speakers: </span>&nbsp;
     <mat-form-field>
         <mat-select
@@ -20,7 +20,7 @@
     </mat-form-field>
 </mat-card>
 
-<mat-card *ngIf="projectorToCreate">
+<mat-card *ngIf="showCreateForm">
     <mat-card-title translate>New Projector</mat-card-title>
     <mat-card-content>
         <form [formGroup]="createForm" (keydown)="keyDownFunction($event)">
@@ -38,7 +38,7 @@
         <button mat-button (click)="create()">
             <span translate>Create</span>
         </button>
-        <button mat-button (click)="projectorToCreate = null">
+        <button mat-button (click)="showCreateForm = false">
             <span translate>Cancel</span>
         </button>
     </mat-card-actions>

client/src/app/site/projector/components/projector-list/projector-list.component.ts

@@ -35,7 +35,7 @@ export class ProjectorListComponent extends BaseViewComponent implements OnInit,
     /**
      * This member is set, if the user is creating a new projector.
      */
-    public projectorToCreate: Projector | null;
+    public showCreateForm = false;
 
     /**
      * The create form.
@@ -126,8 +126,8 @@ export class ProjectorListComponent extends BaseViewComponent implements OnInit,
      * Opens the create form.
      */
     public onPlusButton(): void {
-        if (!this.projectorToCreate) {
+        if (!this.showCreateForm) {
-            this.projectorToCreate = new Projector();
+            this.showCreateForm = true;
             this.createForm.setValue({ name: '' });
         }
     }
@@ -136,13 +136,13 @@ export class ProjectorListComponent extends BaseViewComponent implements OnInit,
      * Creates the comment section from the create form.
      */
     public create(): void {
-        if (this.createForm.valid && this.projectorToCreate) {
+        if (this.createForm.valid && this.showCreateForm) {
-            this.projectorToCreate.patchValues(this.createForm.value as Projector);
+            const projector: Partial<Projector> = {
-            this.projectorToCreate.patchValues({
+                name: this.createForm.value.name,
                 reference_projector_id: this.projectors[0].reference_projector_id
-            });
+            };
-            this.repo.create(this.projectorToCreate).then(() => {
+            this.repo.create(projector).then(() => {
-                this.projectorToCreate = null;
+                this.showCreateForm = false;
                 this.cd.detectChanges();
             }, this.raiseError);
         }
@@ -158,7 +158,7 @@ export class ProjectorListComponent extends BaseViewComponent implements OnInit,
             this.create();
         }
         if (event.key === 'Escape') {
-            this.projectorToCreate = null;
+            this.showCreateForm = null;
         }
     }
 
@@ -169,6 +169,6 @@ export class ProjectorListComponent extends BaseViewComponent implements OnInit,
         const promises = this.projectors.map(projector => {
             return this.repo.update(update, projector);
         });
-        Promise.all(promises).then(null, this.raiseError);
+        Promise.all(promises).catch(this.raiseError);
     }
 }