# Add new tags
tags_to_add = [tag for tag in updated_tags if tag not in current_tags]
for tag in tags_to_add:
- self.intermediary_table_model.objects.get_or_create(tag=tag, content_object=obj)
+ existing = self.intermediary_table_model.objects.filter(
+ content_type__pk=content_type.pk, object_id=obj.pk, tag=tag)
+ if not existing:
+ self.intermediary_table_model.objects.create(tag=tag, content_object=obj)
tags_updated.send(sender=type(obj), instance=obj, affected_tags=tags_to_add + tags_for_removal)