Show from recommendation referencing motions

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

@@ -458,7 +458,8 @@ export class MotionRepositoryService extends BaseIsAgendaItemAndListOfSpeakersCo
         await this.httpService.delete(url);
     }
 
-    /** Returns an observable returning the amendments to a given motion
+    /**
+     * Returns an observable returning the amendments to a given motion
      *
      * @param {number} motionId
      * @returns {Observable<ViewMotion[]>}
@@ -473,6 +474,33 @@ export class MotionRepositoryService extends BaseIsAgendaItemAndListOfSpeakersCo
         );
     }
 
+    /**
+     * Returns an observable for all motions, that referencing the given motion (via id)
+     * in the recommendation.
+     */
+    public getRecommendationReferencingMotions(motionId: number): Observable<ViewMotion[]> {
+        return this.getViewModelListObservable().pipe(
+            map((motions: ViewMotion[]): ViewMotion[] => {
+                return motions.filter((motion: ViewMotion): boolean => {
+                    if (!motion.recommendationExtension) {
+                        return false;
+                    }
+
+                    // Check, if this motion has the motionId in it's recommendation
+                    const placeholderRegex = /\[motion:(\d+)\]/g;
+                    let match;
+                    while ((match = placeholderRegex.exec(motion.recommendationExtension))) {
+                        if (parseInt(match[1], 10) === motionId) {
+                            return true;
+                        }
+                    }
+
+                    return false;
+                });
+            })
+        );
+    }
+
     /**
      * Returns the amendments to a given motion
      *

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

@@ -296,7 +296,7 @@ export class ViewMotion extends BaseViewModelWithAgendaItemAndListOfSpeakers<Mot
     }
 
     /**
-     * @returns the current recommendation extension if the workwlof allows for extenstion fields
+     * @returns the current recommendation extension if the workflow allows for extenstion fields
      */
     public get recommendationExtension(): string {
         if (this.recommendation && this.recommendation.show_recommendation_extension_field) {

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

@@ -329,6 +329,14 @@
             </button>
         </div>
 
+        <!-- recommendation referencing motions -->
+        <div *ngIf="!editMotion && recommendationReferencingMotions.length > 0">
+            <h4 translate>Recommendation-referencing motions</h4>
+            <div *ngFor="let motion of recommendationReferencingMotions">
+                <a [routerLink]="motion.getDetailStateURL()">{{ motion.identifierOrTitle }}</a>
+            </div>
+        </div>
+
         <!-- Category -->
         <!-- Disabled during "new motion" since changing has no effect -->
         <div *ngIf="!editMotion && categoryObserver.value.length">

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

@@ -371,6 +371,8 @@ export class MotionDetailComponent extends BaseViewComponent implements OnInit,
      */
     private navigationSubscription: Subscription;
 
+    public recommendationReferencingMotions: ViewMotion[] = [];
+
     /**
      * Constructs the detail view.
      *
@@ -614,6 +616,9 @@ export class MotionDetailComponent extends BaseViewComponent implements OnInit,
                     this.amendments = amendments;
                     this.recalcUnifiedChanges();
                 }),
+                this.repo
+                    .getRecommendationReferencingMotions(motionId)
+                    .subscribe(motions => (this.recommendationReferencingMotions = motions)),
                 this.changeRecoRepo
                     .getChangeRecosOfMotionObservable(motionId)
                     .subscribe((recos: ViewMotionChangeRecommendation[]) => {

client/src/app/slides/motions/motion/motion-slide-data.ts

@@ -1,4 +1,4 @@
-import { ChangeRecoMode, LineNumberingMode } from 'app/site/motions/models/view-motion';
+import { ChangeRecoMode, LineNumberingMode, MotionTitleInformation } from 'app/site/motions/models/view-motion';
 import { ReferencedMotions } from '../base/base-motion-slide';
 
 /**
@@ -66,6 +66,7 @@ export interface MotionSlideData {
     recommender?: string;
     recommendation?: string;
     recommendation_extension?: string;
+    recommendation_referencing_motions?: MotionTitleInformation[];
     referenced_motions?: ReferencedMotions;
     base_motion?: MotionSlideDataBaseMotion;
     base_statute?: MotionSlideDataBaseStatute;

client/src/app/slides/motions/motion/motion-slide.component.html

@@ -11,6 +11,14 @@
             <h3>{{ data.data.recommender }}</h3>
             {{ getRecommendationLabel() }}
         </div>
+
+        <!-- recommendation referencing motions -->
+        <div *ngIf="data.data.recommendation_referencing_motions">
+            <h3 translate>Recommendation-referencing motions</h3>
+            <div *ngFor="let titleInformation of data.data.recommendation_referencing_motions">
+                {{ getIdentifierOrTitle(titleInformation) }}
+            </div>
+        </div>
     </div>
 
     <div [ngStyle]="{width: data.data.show_meta_box ? 'calc(100% - 250px)' : '100%'}">

client/src/app/slides/motions/motion/motion-slide.component.ts

@@ -4,7 +4,7 @@ import { DomSanitizer, SafeHtml } from '@angular/platform-browser';
 import { TranslateService } from '@ngx-translate/core';
 
 import { MotionSlideData, MotionSlideDataAmendment } from './motion-slide-data';
-import { ChangeRecoMode, LineNumberingMode } from 'app/site/motions/models/view-motion';
+import { ChangeRecoMode, LineNumberingMode, MotionTitleInformation } from 'app/site/motions/models/view-motion';
 import { DiffLinesInParagraph, DiffService, LineRange } from 'app/core/ui-services/diff.service';
 import { LinenumberingService } from 'app/core/ui-services/linenumbering.service';
 import { ViewUnifiedChange } from 'app/shared/models/motions/view-unified-change';
@@ -118,6 +118,10 @@ export class MotionSlideComponent extends BaseMotionSlideComponent<MotionSlideDa
         super(translate, motionRepo);
     }
 
+    public getIdentifierOrTitle(titleInformation: MotionTitleInformation): string {
+        return this.motionRepo.getIdentifierOrTitle(titleInformation);
+    }
+
     public getRecommendationLabel(): string {
         let recommendation = this.translate.instant(this.data.data.recommendation);
         if (this.data.data.recommendation_extension) {

openslides/motions/projector.py

@@ -1,5 +1,5 @@
 import re
-from typing import Any, Dict, Optional
+from typing import Any, Dict, List, Optional
 
 from ..users.projector import get_user_name
 from ..utils.projector import (
@@ -228,6 +228,7 @@ async def motion_slide(
         return_value["modified_final_version"] = motion["modified_final_version"]
 
     if show_meta_box:
+        # Add recommendation, if enabled in config (and the motion has one)
         if (
             not await get_config(
                 all_data, "motions_disable_recommendation_on_projector"
@@ -254,6 +255,7 @@ async def motion_slide(
                 all_data, "motions_recommendations_by"
             )
 
+        # Add submitters
         return_value["submitter"] = [
             await get_user_name(all_data, submitter["user_id"])
             for submitter in sorted(
@@ -261,9 +263,50 @@ async def motion_slide(
             )
         ]
 
+        # Add recommendation-referencing motions
+        return_value[
+            "recommendation_referencing_motions"
+        ] = await get_recommendation_referencing_motions(all_data, motion_id)
+
     return return_value
 
 
+async def get_recommendation_referencing_motions(
+    all_data: AllData, motion_id: int
+) -> Optional[List[Dict[str, Any]]]:
+    """
+    Returns all title information for motions, that are referencing
+    the given motion (by id) in their recommendation. If there are no
+    motions, None is returned (instead of []).
+    """
+    recommendation_referencing_motions = []
+    for motion in all_data["motions/motion"].values():
+        # Motion must have a recommendation and a recommendaiton extension
+        if not motion["recommendation_id"] or not motion["recommendation_extension"]:
+            continue
+
+        # The recommendation must allow the extension field (there might be left-overs
+        # in a motions recommendation extension..)
+        recommendation = await get_state(all_data, motion, "recommendation_id")
+        if not recommendation["show_recommendation_extension_field"]:
+            continue
+
+        # Find referenced motion ids
+        referenced_ids = [
+            int(id)
+            for id in motion_placeholder_regex.findall(
+                motion["recommendation_extension"]
+            )
+        ]
+
+        # if one of the referenced ids is the given motion, add the current motion.
+        if motion_id in referenced_ids:
+            recommendation_referencing_motions.append(
+                {"title": motion["title"], "identifier": motion["identifier"]}
+            )
+    return recommendation_referencing_motions or None
+
+
 async def motion_block_slide(
     all_data: AllData, element: Dict[str, Any], projector_id: int
 ) -> Dict[str, Any]:

tests/unit/motions/test_projector.py

@@ -297,6 +297,7 @@ async def test_motion_slide(all_data):
         "line_length": 90,
         "line_numbering_mode": "none",
         "preamble": "The assembly may decide:",
+        "recommendation_referencing_motions": None,
     }
 
 
@@ -322,6 +323,7 @@ async def test_amendment_slide(all_data):
         "line_length": 90,
         "line_numbering_mode": "none",
         "preamble": "The assembly may decide:",
+        "recommendation_referencing_motions": None,
     }
 
 
@@ -347,4 +349,5 @@ async def test_statute_amendment_slide(all_data):
         "line_length": 90,
         "line_numbering_mode": "none",
         "preamble": "The assembly may decide:",
+        "recommendation_referencing_motions": None,
     }