Merge branch 'develop' into feature/similar-wines

apps/search_indexes/documents/tag_category.py

@@ -39,4 +39,8 @@ class TagCategoryDocument(Document):
         to the updating of a lot of items.
         """
         if isinstance(related_instance, News):
-            return related_instance.tags
+            tag_categories = []
+            for tag in related_instance.tags.all():
+                if tag.category not in tag_categories:
+                    tag_categories.append(tag.category)
+            return tag_categories