- tag = models.ForeignKey('Tag', verbose_name=_('tag'), related_name='items')
- content_type = models.ForeignKey(ContentType, verbose_name=_('content type'))
+ tag = models.ForeignKey('Tag', models.CASCADE, verbose_name=_('tag'), related_name='items')
+ content_type = models.ForeignKey(ContentType, models.CASCADE, verbose_name=_('content type'))