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Fixed #22720 -- Migrations attempt to create _order twice.

This commit is contained in:
Víðir Valberg Guðmundsson 2014-05-29 01:00:30 +02:00
parent 7e3cf3cfd2
commit 6cfa2fae39
1 changed files with 2 additions and 1 deletions
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3
django/db/models/options.py
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@ -167,7 +167,8 @@ 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