Revert accidental stupidity

765b0b33 · Tom Christie · fec7c4b4 · 765b0b33
Commit 765b0b33 authored Oct 03, 2014 by Tom Christie
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rest_framework/relations.py
+1 -1

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--- a/rest_framework/relations.py
+++ b/rest_framework/relations.py
@@ -127,7 +127,7 @@ 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:
+        if obj.pk is None:
            return None

        lookup_value = getattr(obj, self.lookup_field)