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For a number of reasons^, I'd like to use a UUID as a primary key in some of my Django models. If I do so, will I still be able to use outside apps like "contrib.comments", "django-voting" or "django-tagging" which use generic relations via ContentType? Using "django-voting" as an example, the Vote model looks like this: class Vote(models.Model): user = models.ForeignKey(User) content_type = models.ForeignKey(ContentType) object_id = models.PositiveIntegerField() object = generic.GenericForeignKey('content_type', 'object_id') vote = models.SmallIntegerField(choices=SCORES) This app seems to be assuming that the primary key for the model being voted on is an integer. The built-in comments app seems to be capable of handling non-integer PKs, though: class BaseCommentAbstractModel(models.Model): content_type = models.ForeignKey(ContentType, verbose_name=_('content type'), related_name="content_type_set_for_%(class)s") object_pk = models.TextField(_('object ID')) content_object = generic.GenericForeignKey(ct_field="content_type", fk_field="object_pk") Is this "integer-PK-assumed" problem a common situation for third-party apps which would make using UUIDs a pain? Or, possibly, am I misreading this situation? Is there a way to use UUIDs as primary keys in Django without causing too much trouble? ^ Some of the reasons: hiding object counts, preventing url "id crawling", using multiple servers to create non-conflicting objects, ...

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