dcramer/django-uuidfield — pull request #22 by pwalsh (2013-09-03 06:04:43+00:00)
Title: Return StringUUID's __unicode__ in to_python for compatability with Django's prefetch_related implementation

Returning an instance of StringUUID in to_python breaks Django's prefetch_related when a UUIDField is set to primary_key=True - the code expects a string, not an instance.