Issue #3283: Taiga 1.8.0: HTTP error 500 while trying to delete proje…

…ct as admin.

taiga/projects/admin.py

@@ -98,6 +98,9 @@ def formfield_for_manytomany(self, db_field, request, **kwargs):
                                          memberships__project=self.obj)
         return super().formfield_for_manytomany(db_field, request, **kwargs)
 
+    def delete_model(self, request, obj):
+        obj.delete_related_content()
+        super().delete_model(request, obj)
 
 # User Stories common admins
 

taiga/projects/api.py

@@ -253,36 +253,13 @@ def pre_save(self, obj):
         super().pre_save(obj)
 
     def destroy(self, request, *args, **kwargs):
-        from taiga.events.apps import connect_events_signals, disconnect_events_signals
-        from taiga.projects.tasks.apps import connect_all_tasks_signals, disconnect_all_tasks_signals
-        from taiga.projects.userstories.apps import connect_all_userstories_signals, disconnect_all_userstories_signals
-        from taiga.projects.issues.apps import connect_all_issues_signals, disconnect_all_issues_signals
-        from taiga.projects.apps import connect_memberships_signals, disconnect_memberships_signals
-
         obj = self.get_object_or_none()
         self.check_permissions(request, 'destroy', obj)
 
         if obj is None:
             raise Http404
 
-        disconnect_events_signals()
-        disconnect_all_issues_signals()
-        disconnect_all_tasks_signals()
-        disconnect_all_userstories_signals()
-        disconnect_memberships_signals()
-
-        try:
-            obj.tasks.all().delete()
-            obj.user_stories.all().delete()
-            obj.issues.all().delete()
-            obj.memberships.all().delete()
-            obj.roles.all().delete()
-        finally:
-            connect_events_signals()
-            connect_all_issues_signals()
-            connect_all_tasks_signals()
-            connect_all_userstories_signals()
-            connect_memberships_signals()
+        obj.delete_related_content()
 
         self.pre_delete(obj)
         self.pre_conditions_on_delete(obj)

taiga/projects/models.py

@@ -308,6 +308,31 @@ def remove_watcher(self, user):
         notify_policy = get_notify_policy(self, user)
         set_notify_policy_level_to_ignore(notify_policy)
 
+    def delete_related_content(self):
+        from taiga.events.apps import connect_events_signals, disconnect_events_signals
+        from taiga.projects.tasks.apps import connect_all_tasks_signals, disconnect_all_tasks_signals
+        from taiga.projects.userstories.apps import connect_all_userstories_signals, disconnect_all_userstories_signals
+        from taiga.projects.issues.apps import connect_all_issues_signals, disconnect_all_issues_signals
+        from taiga.projects.apps import connect_memberships_signals, disconnect_memberships_signals
+
+        disconnect_events_signals()
+        disconnect_all_issues_signals()
+        disconnect_all_tasks_signals()
+        disconnect_all_userstories_signals()
+        disconnect_memberships_signals()
+
+        try:
+            self.tasks.all().delete()
+            self.user_stories.all().delete()
+            self.issues.all().delete()
+            self.memberships.all().delete()
+            self.roles.all().delete()
+        finally:
+            connect_events_signals()
+            connect_all_issues_signals()
+            connect_all_tasks_signals()
+            connect_all_userstories_signals()
+            connect_memberships_signals()
 
 class ProjectModulesConfig(models.Model):
     project = models.OneToOneField("Project", null=False, blank=False,