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Added ability to define backend identification attribute

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Devon Bleibtrey 2015-03-22 13:50:05 -04:00
parent c9618cc0f3
commit 8a58b1a380
1 changed files with 2 additions and 1 deletions
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rest_framework/relations.py
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@ -166,6 +166,7 @@ class HyperlinkedRelatedField(RelatedField):
self.lookup_field = kwargs.pop('lookup_field', self.lookup_field)
self.lookup_url_kwarg = kwargs.pop('lookup_url_kwarg', self.lookup_field)
self.format = kwargs.pop('format', None)
self.id_field = kwargs.pop('id_field', 'pk')
# We include this simply for dependency injection in tests.
# We can't add it as a class attributes or it would expect an
@ -196,7 +197,7 @@ class HyperlinkedRelatedField(RelatedField):
attributes are not configured to correctly match the URL conf.
"""
# Unsaved objects will not yet have a valid URL.
if obj.pk is None:
if getattr(obj, self.id_field) is None:
return None
lookup_value = getattr(obj, self.lookup_field)