Enable changelog message support for bulk deletions

Author: jeremystretch

netbox/netbox/api/viewsets/mixins.py

@@ -149,18 +149,25 @@ def bulk_destroy(self, request, *args, **kwargs):
         serializer = BulkOperationSerializer(data=request.data, many=True)
         serializer.is_valid(raise_exception=True)
         qs = self.get_bulk_destroy_queryset().filter(
-            pk__in=[o['id'] for o in serializer.data]
+            pk__in=[o['id'] for o in serializer.validated_data]
         )
 
-        self.perform_bulk_destroy(qs)
+        # Compile any changelog messages to be recorded on the objects being deleted
+        changelog_messages = {
+            o['id']: o.get('changelog_message') for o in serializer.validated_data
+        }
+
+        self.perform_bulk_destroy(qs, changelog_messages)
 
         return Response(status=status.HTTP_204_NO_CONTENT)
 
-    def perform_bulk_destroy(self, objects):
+    def perform_bulk_destroy(self, objects, changelog_messages=None):
+        changelog_messages = changelog_messages or {}
         with transaction.atomic(using=router.db_for_write(self.queryset.model)):
             for obj in objects:
                 if hasattr(obj, 'snapshot'):
                     obj.snapshot()
+                obj._changelog_message = changelog_messages.get(obj.pk)
                 self.perform_destroy(obj)