Add workaround for deleting polymorphic feedback

integreat_cms/cms/models/feedback/feedback.py

@@ -5,6 +5,7 @@
 from django.utils.translation import ugettext_lazy as _
 
 from polymorphic.models import PolymorphicModel
+from polymorphic.managers import PolymorphicQuerySet, PolymorphicManager
 
 from ...constants import feedback_ratings
 from ...utils.translation_utils import ugettext_many_lazy as __
@@ -13,12 +14,45 @@
 from ..regions.region import Region
 
 
+class CascadeDeletePolymorphicQuerySet(PolymorphicQuerySet):
+    """
+    Patch the QuerySet to call delete on the non_polymorphic QuerySet, avoiding models.deletion.Collector typing problem
+
+    Based on workarounds proposed in: https://github.com/django-polymorphic/django-polymorphic/issues/229
+    See also: https://github.com/django-polymorphic/django-polymorphic/issues/34, https://github.com/django-polymorphic/django-polymorphic/issues/84
+    Related Django ticket: https://code.djangoproject.com/ticket/23076
+    """
+
+    def delete(self):
+        """
+        This method deletes all objects in this QuerySet.
+
+        :return: A tuple of the number of objects delete and the delete objects grouped by their type
+        :rtype: tuple
+        """
+        if not self.polymorphic_disabled:
+            return self.non_polymorphic().delete()
+
+        return super().delete()
+
+
+class CascadeDeletePolymorphicManager(PolymorphicManager):
+    """
+    This class is used as a workaround for a bug in django-polymorphic.
+    For more information, see :class:`~integreat_cms.cms.models.feedback.feedback.CascadeDeletePolymorphicQuerySet`.
+    """
+
+    queryset_class = CascadeDeletePolymorphicQuerySet
+
+
 class Feedback(PolymorphicModel, AbstractBaseModel):
     """
     Database model representing feedback from app-users.
     Do not directly create instances of this base model, but of the submodels (e.g. PageFeedback) instead.
     """
 
+    objects = CascadeDeletePolymorphicManager()
+
     region = models.ForeignKey(
         Region,
         on_delete=models.CASCADE,

integreat_cms/cms/views/feedback/admin_feedback_actions.py

@@ -1,5 +1,5 @@
 """
-This module contains action methods for feedack items (archive, restore, ...)
+This module contains action methods for feedback items (archive, restore, ...)
 """
 import logging
 

integreat_cms/cms/views/feedback/region_feedback_actions.py

@@ -1,5 +1,5 @@
 """
-This module contains action methods for feedack items (archive, restore, ...)
+This module contains action methods for feedback items (archive, restore, ...)
 """
 import logging
 

integreat_cms/locale/de/LC_MESSAGES/django.po

@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: 1.0\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2022-03-20 18:58+0000\n"
+"POT-Creation-Date: 2022-03-21 13:18+0000\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: Integreat <[email protected]>\n"
 "Language-Team: Integreat <[email protected]>\n"
@@ -1840,14 +1840,14 @@ msgid "The new passwords do not match."
 msgstr "Die Passwörter stimmen nicht überein."
 
 #: cms/models/abstract_content_model.py:96 cms/models/abstract_tree_node.py:35
-#: cms/models/feedback/feedback.py:26 cms/models/media/directory.py:24
+#: cms/models/feedback/feedback.py:60 cms/models/media/directory.py:24
 #: cms/models/media/media_file.py:138
 #: cms/models/push_notifications/push_notification.py:21
 #: cms/models/regions/region.py:613
 msgid "region"
 msgstr "Region"
 
-#: cms/models/abstract_content_model.py:99 cms/models/feedback/feedback.py:62
+#: cms/models/abstract_content_model.py:99 cms/models/feedback/feedback.py:96
 #: cms/models/languages/language.py:85
 #: cms/models/languages/language_tree_node.py:37
 #: cms/models/media/directory.py:36 cms/models/offers/offer_template.py:56
@@ -1894,7 +1894,7 @@ msgid "content"
 msgstr "Inhalt"
 
 #: cms/models/abstract_content_translation.py:44
-#: cms/models/feedback/feedback.py:32 cms/models/languages/language.py:135
+#: cms/models/feedback/feedback.py:66 cms/models/languages/language.py:135
 #: cms/models/languages/language_tree_node.py:23
 #: cms/models/push_notifications/push_notification_translation.py:27
 msgid "language"
@@ -2120,39 +2120,39 @@ msgstr "Veranstaltungen"
 msgid "event list feedback"
 msgstr "Veranstaltungslisten-Feedback"
 
-#: cms/models/feedback/feedback.py:40
+#: cms/models/feedback/feedback.py:74
 msgid "rating"
 msgstr "Bewertung"
 
-#: cms/models/feedback/feedback.py:41
+#: cms/models/feedback/feedback.py:75
 msgid "Whether the feedback is positive or negative"
 msgstr "Ob das Feedback positiv oder negativ ist"
 
-#: cms/models/feedback/feedback.py:43
+#: cms/models/feedback/feedback.py:77
 msgid "comment"
 msgstr "Kommentar"
 
-#: cms/models/feedback/feedback.py:45
+#: cms/models/feedback/feedback.py:79
 msgid "technical"
 msgstr "technisch"
 
-#: cms/models/feedback/feedback.py:46
+#: cms/models/feedback/feedback.py:80
 msgid "Whether or not the feedback is targeted at the developers"
 msgstr "Ob das Feedback an die Entwickler gerichtet ist oder nicht"
 
-#: cms/models/feedback/feedback.py:54
+#: cms/models/feedback/feedback.py:88
 msgid "marked as read by"
 msgstr "als gelesen markiert von"
 
-#: cms/models/feedback/feedback.py:56
+#: cms/models/feedback/feedback.py:90
 msgid "The user who marked this feedback as read."
 msgstr "Der Benutzer, der dieses Feedback als gelesen markiert hat."
 
-#: cms/models/feedback/feedback.py:57
+#: cms/models/feedback/feedback.py:91
 msgid "If the feedback is unread, this field is empty."
 msgstr "Wenn das Feedback ungelesen ist, ist dieses Feld leer."
 
-#: cms/models/feedback/feedback.py:150 cms/models/feedback/feedback.py:152
+#: cms/models/feedback/feedback.py:184 cms/models/feedback/feedback.py:186
 msgid "feedback"
 msgstr "Feedback"