added a view to change the reference projector in one api call

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

@@ -127,4 +127,12 @@ export class ProjectorRepositoryService extends BaseRepository<ViewProjector, Pr
             step: step
         });
     }
+
+    /**
+     * Sets the given projector as the new reference projector for all projectors
+     * @param projector the new default projector id
+     */
+    public async setDefaultProjector(projector_id: number): Promise<void> {
+        await this.http.post<void>(`/rest/core/projector/${projector_id}/set_default_projector/`);
+    }
 }

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

@@ -162,13 +162,11 @@ export class ProjectorListComponent extends BaseViewComponent implements OnInit,
         }
     }
 
+    /**
+     * Event handler when the reference projector is changed
+     * @param change the change event that contains the new id
+     */
     public onSelectReferenceProjector(change: MatSelectChange): void {
-        const update: Partial<Projector> = {
-            reference_projector_id: change.value
-        };
-        const promises = this.projectors.map(projector => {
-            return this.repo.update(update, projector);
-        });
-        Promise.all(promises).catch(this.raiseError);
+        this.repo.setDefaultProjector(change.value).catch(this.raiseError);
     }
 }

openslides/core/views.py

@@ -132,7 +132,7 @@ class ProjectorViewSet(ModelViewSet):
             "destroy",
             "control_view",
             "set_scroll",
-            "set_projectiondefault",
+            "set_default_projector",
             "project",
         ):
             result = has_perm(self.request.user, "core.can_see_projector") and has_perm(
@@ -329,6 +329,18 @@ class ProjectorViewSet(ModelViewSet):
             {"detail": "Setting scroll to {0} was successful.", "args": [request.data]}
         )
 
+    @detail_route(methods=["post"])
+    def set_default_projector(self, request, pk):
+        """
+        REST API operation to set the projector with the given pk as the new default.
+        """
+        reference_projector = self.get_object()
+        for projector in self.queryset.all():
+            projector.reference_projector = reference_projector
+            projector.save()
+
+        return Response()
+
 
 class ProjectionDefaultViewSet(ListModelMixin, RetrieveModelMixin, GenericViewSet):
     """

tests/integration/core/test_views.py

@@ -105,6 +105,23 @@ def test_project_view(client):
     assert projector.elements_preview == [{"name": "topics/topic", "id": 3}]
 
 
+@pytest.mark.django_db(transaction=False)
+def test_set_default_projector(client):
+    client.login(username="admin", password="admin")
+    Projector.objects.create(name="test_name_rePaODETymV4eFM3aOBD")
+    reference_projector = Projector.objects.create(
+        name="test_name_S2vXmumTMKyT4yjgEoyF"
+    )
+
+    response = client.post(
+        reverse("projector-set-default-projector", args=[reference_projector.pk])
+    )
+    assert response.status_code == 200
+
+    for projector in Projector.objects.all():
+        assert projector.reference_projector_id == reference_projector.id
+
+
 @pytest.mark.django_db(transaction=False)
 def test_get(client):
     client.login(username="admin", password="admin")