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Code Issues 32 Releases Wiki Activity

[1.6.x] Minor change to get_extra_descriptor_filter()

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Refs #20611. Backpatch of 6b4967e883.
This commit is contained in:
Anssi Kääriäinen
2013-07-23 15:06:02 +03:00
parent 92f66a6134
commit 43f1d51b4b
1 changed files with 11 additions and 5 deletions
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16
django/db/models/fields/related.py
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@@ -297,10 +297,15 @@ class ReverseSingleRelatedObjectDescriptor(six.with_metaclass(RenameRelatedObjec
params = dict(
(rh_field.attname, getattr(instance, lh_field.attname))
for lh_field, rh_field in self.field.related_fields)
params.update(self.field.get_extra_descriptor_filter(instance))
qs = self.get_queryset(instance=instance)
extra_filter = self.field.get_extra_descriptor_filter(instance)
if isinstance(extra_filter, dict):
params.update(extra_filter)
qs = qs.filter(**params)
else:
qs = qs.filter(extra_filter, **params)
# Assuming the database enforces foreign keys, this won't fail.
rel_obj = qs.get(**params)
rel_obj = qs.get()
if not self.field.rel.multiple:
setattr(rel_obj, self.field.related.get_cache_name(), instance)
setattr(instance, self.cache_name, rel_obj)
@@ -1003,10 +1008,11 @@ class ForeignObject(RelatedField):
user does 'instance.fieldname', that is the extra filter is used in
the descriptor of the field.
The filter should be something usable in .filter(**kwargs) call, and
will be ANDed together with the joining columns condition.
The filter should be either a dict usable in .filter(**kwargs) call or
a Q-object. The condition will be ANDed together with the relation's
joining columns.
A parallel method is get_extra_relation_restriction() which is used in
A parallel method is get_extra_restriction() which is used in
JOIN and subquery conditions.
"""
return {}