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authorVíðir Valberg Guðmundsson <valberg@orn.li>2014-05-29 01:00:30 +0200
committerTim Graham <timograham@gmail.com>2014-05-29 07:52:17 -0400
commit0ee27d5b62a76781f5d78fc3f506dca624941062 (patch)
tree067b2cf6aa0110b90c703884b81f506915e0a587
parentb8b1fbd4c1c42d3cf84d67c1923716842025680b (diff)
[1.7.x] Fixed #22720 -- Migrations attempt to create _order twice.
Backport of 6cfa2fae39 from master
-rw-r--r--django/db/models/options.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/django/db/models/options.py b/django/db/models/options.py
index d204bcf84c..c49567d795 100644
--- a/django/db/models/options.py
+++ b/django/db/models/options.py
@@ -179,7 +179,8 @@ class Options(object):
if self.order_with_respect_to:
self.order_with_respect_to = self.get_field(self.order_with_respect_to)
self.ordering = ('_order',)
- model.add_to_class('_order', OrderWrt())
+ if not any(isinstance(field, OrderWrt) for field in model._meta.local_fields):
+ model.add_to_class('_order', OrderWrt())
else:
self.order_with_respect_to = None