def _add_tags(self, instance, new_tags):
if not new_tags:
return []
ctype = ContentType.objects.get_for_model(instance)
#Create mapping
for x in new_tags:
Item.objects.create(content_object=instance, tag=x)
#send signal
item_tagged.send(sender=self.model, action='create', content_type=ctype, tags=new_tags, instance=instance)
return [x.name for x in new_tags]
def _remove_tags(self, instance, tags):
if not tags:
return []
ctype = ContentType.objects.get_for_model(instance)
#Delete mapping
Item.objects.filter(content_type__pk=ctype.id,
object_id=instance.pk,
tag__in=[x.pk for x in tags]
).delete()
#send signal
item_tagged.send(sender=self.model, action='remove', content_type=ctype, tags=tags, instance=instance)
return [x.name for x in tags]
