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Made some extra opt-out checking in object manager.

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Griatch 2013-08-24 11:36:28 +02:00
parent ca11e7de44
commit befe6a6db0
1 changed files with 4 additions and 1 deletions
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5
src/objects/manager.py
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@ -8,7 +8,7 @@ from django.db.models.fields import exceptions
from src.typeclasses.managers import TypedObjectManager
from src.typeclasses.managers import returns_typeclass, returns_typeclass_list
from src.utils import utils
from src.utils.utils import to_unicode, make_iter, string_partial_matching
from src.utils.utils import to_unicode, is_iter, make_iter, string_partial_matching
__all__ = ("ObjectManager",)
_GA = object.__getattribute__
@ -190,6 +190,9 @@ class ObjectManager(TypedObjectManager):
ostring = ostring.key
else:
return []
if is_iter(candidates) and not len(candidates):
# if candidates is an empty iterable there can be no matches. Exit early.
return []
# build query objects
candidates_id = [_GA(obj, "id") for obj in make_iter(candidates) if obj]