From: Jan Szejko <janek37@gmail.com>
Date: Thu, 13 Sep 2018 10:55:34 +0000 (+0200)
Subject: fix weird bug (race condition?)
X-Git-Url: https://git.mdrn.pl/wolnelektury.git/commitdiff_plain/0e60316596df97cade1fc72657c5dfcdfeee9370

fix weird bug (race condition?)
---

diff --git a/src/newtagging/models.py b/src/newtagging/models.py
index 9d12111d2..e42295d70 100644
--- a/src/newtagging/models.py
+++ b/src/newtagging/models.py
@@ -64,7 +64,7 @@ class TagManager(models.Manager):
         # 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.create(tag=tag, content_object=obj)
+            self.intermediary_table_model.objects.get_or_create(tag=tag, content_object=obj)
 
         tags_updated.send(sender=type(obj), instance=obj, affected_tags=tags_to_add + tags_for_removal)