content_type = models.ForeignKey(ContentType, verbose_name='Content type')
content_id = models.PositiveIntegerField(verbose_name='Content ID')
content = generic.GenericForeignKey('content_type', 'content_id')
content_type = models.ForeignKey(ContentType, verbose_name='Content type')
content_id = models.PositiveIntegerField(verbose_name='Content ID')
content = generic.GenericForeignKey('content_type', 'content_id')