Sort motions in categories

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

@@ -70,24 +70,28 @@ export class CategoryRepositoryService extends BaseRepository<ViewCategory, Cate
         return viewCategory;
     }
 
-    /**
-     * Returns the category for the ID
-     * @param category_id category ID
-     */
-    public getCategoryByID(category_id: number): Category {
-        return this.DS.find<Category>(Category, cat => cat.id === category_id);
-    }
-
     /**
      * Updates a categories numbering.
+     *
      * @param category the category it should be updated in
-     * @param motionList the list of motions on this category
+     * @param motionIds the list of motion ids on this category
      */
     public async numberMotionsInCategory(category: Category, motionIds: number[]): Promise<void> {
         const collectionString = 'rest/motions/category/' + category.id + '/numbering/';
         await this.httpService.post(collectionString, { motions: motionIds });
     }
 
+    /**
+     * Updates the sorting of motions in a category.
+     *
+     * @param category the category it should be updated in
+     * @param motionIds the list of motion ids on this category
+     */
+    public async sortMotionsInCategory(category: Category, motionIds: number[]): Promise<void> {
+        const collectionString = 'rest/motions/category/' + category.id + '/sort/';
+        await this.httpService.post(collectionString, { motions: motionIds });
+    }
+
     /**
      * Triggers an update for the sort function responsible for the default sorting of data items
      */

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

@@ -28,6 +28,7 @@ export class Motion extends BaseModel {
     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: MotionSubmitter[];

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

@@ -128,6 +128,10 @@ export class ViewMotion extends BaseAgendaViewModel implements Searchable {
         return this._category;
     }
 
+    public get category_weight(): number {
+        return this.motion.category_weight;
+    }
+
     public get submitters(): ViewUser[] {
         return this._submitters;
     }

openslides/motions/migrations/0025_motion_category_weight.py

@@ -0,0 +1,16 @@
+# Generated by Django 2.2 on 2019-04-30 11:09
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [("motions", "0024_state_restriction_3")]
+
+    operations = [
+        migrations.AddField(
+            model_name="motion",
+            name="category_weight",
+            field=models.IntegerField(default=10000),
+        )
+    ]

openslides/motions/models.py

@@ -187,6 +187,12 @@ class Motion(RESTModelMixin, models.Model):
     ForeignKey to one category of motions.
     """
 
+    category_weight = models.IntegerField(default=10000)
+    """
+    Sorts the motions inside a category. Default is 10000 so new motions
+    in a category will be added on the end of the list.
+    """
+
     motion_block = models.ForeignKey(
         "MotionBlock", on_delete=SET_NULL_AND_AUTOUPDATE, null=True, blank=True
     )

openslides/motions/serializers.py

@@ -428,6 +428,7 @@ class MotionSerializer(ModelSerializer):
             "reason",
             "parent",
             "category",
+            "category_weight",
             "comments",
             "motion_block",
             "origin",
@@ -455,6 +456,8 @@ class MotionSerializer(ModelSerializer):
         read_only_fields = (
             "state",
             "recommendation",
+            "weight",
+            "category_weight",
         )  # Some other fields are also read_only. See definitions above.
 
     def validate(self, data):
@@ -527,16 +530,34 @@ class MotionSerializer(ModelSerializer):
     def update(self, motion, validated_data):
         """
         Customized method to update a motion.
+        - If the workflow changes, the state of the motions is resetted to
+          the initial state of the new workflow.
+        - If the category changes, the category_weight is reset to the default value.
         """
         workflow_id = None
         if "workflow_id" in validated_data:
             workflow_id = validated_data.pop("workflow_id")
 
+        old_category_id = motion.category.pk if motion.category is not None else None
+        new_category_id = (
+            validated_data["category"].pk
+            if validated_data.get("category") is not None
+            else None
+        )
+
         result = super().update(motion, validated_data)
 
+        # Check for changed workflow
         if workflow_id is not None and workflow_id != motion.workflow_id:
             motion.reset_state(workflow_id)
-            motion.save()
+            motion.save(skip_autoupdate=True)
+
+        # Check for changed category
+        if old_category_id != new_category_id:
+            motion.category_weight = 10000
+            motion.save(skip_autoupdate=True)
+
+        inform_changed_data(motion)
 
         return result
 

openslides/motions/views.py

@@ -1,5 +1,5 @@
 import re
-from typing import List
+from typing import List, Set
 
 import jsonschema
 from django.conf import settings
@@ -1158,6 +1158,7 @@ class CategoryViewSet(ModelViewSet):
             "partial_update",
             "update",
             "destroy",
+            "sort",
             "numbering",
         ):
             result = has_perm(self.request.user, "motions.can_see") and has_perm(
@@ -1167,6 +1168,52 @@ class CategoryViewSet(ModelViewSet):
             result = False
         return result
 
+    @detail_route(methods=["post"])
+    @transaction.atomic
+    def sort(self, request, pk=None):
+        """
+        Endpoint to sort all motions in the category.
+
+        Send POST {'motions': [<list of motion ids>]} to sort the given
+        motions in the given order. Ids of motions with another category or
+        non existing motions are ignored, but all motions of this category
+        have to be send.
+        """
+        category = self.get_object()
+
+        ids = request.data.get("motions", None)
+        if not isinstance(ids, list):
+            raise ValidationError("The ids must be a list.")
+
+        motions = []
+        motion_ids: Set[int] = set()  # To detect duplicated
+        for id in ids:
+            if not isinstance(id, int):
+                raise ValidationError("All ids must be int.")
+
+            if id in motion_ids:
+                continue  # Duplicate id
+
+            try:
+                motion = Motion.objects.get(pk=id)
+            except Motion.DoesNotExist:
+                continue  # Ignore invalid ids.
+
+            if motion.category is not None and motion.category.pk == category.pk:
+                motions.append(motion)
+                motion_ids.add(id)
+
+        if Motion.objects.filter(category=category).count() != len(motions):
+            raise ValidationError("Not all motions for this category are given")
+
+        # assign the category_weight field:
+        for weight, motion in enumerate(motions, start=1):
+            motion.category_weight = weight
+            motion.save(skip_autoupdate=True)
+
+        inform_changed_data(motions)
+        return Response()
+
     @detail_route(methods=["post"])
     def numbering(self, request, pk=None):
         """

tests/integration/motions/test_viewset.py

@@ -582,6 +582,26 @@ class UpdateMotion(TestCase):
         self.assertEqual(motion.title, "test_title_aeng7ahChie3waiR8xoh")
         self.assertEqual(motion.workflow_id, 2)
 
+    def test_patch_category(self):
+        """
+        Tests to only update the category of a motion. Expects the
+        category_weight to be resetted.
+        """
+        category = Category.objects.create(
+            name="test_category_name_FE3jO(Fm83doqqlwcvlv",
+            prefix="test_prefix_w3ofg2mv79UGFqjk3f8h",
+        )
+        self.motion.category_weight = 1
+        self.motion.save()
+        response = self.client.patch(
+            reverse("motion-detail", args=[self.motion.pk]),
+            {"category_id": category.pk},
+        )
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        motion = Motion.objects.get()
+        self.assertEqual(motion.category, category)
+        self.assertEqual(motion.category_weight, 10000)
+
     def test_patch_supporters(self):
         supporter = get_user_model().objects.create_user(
             username="test_username_ieB9eicah0uqu6Phoovo",