def get_related(self, instance): """ Returns all the related items """ if not is_tagstar_maintained(instance): raise ItemNotTagstarMaintained("Item %s is not under Tagstar" % instance.__class__) return self.get_related_by_tags(getattr(instance, instance._tags_field_name), instance)
def update_tags(self, instance, tags): """ Update tags from an item """ if not tags: return [] if not is_tagstar_maintained(instance): raise ItemNotTagstarMaintained("Item %s is not under Tagstar" % instance.__class__) if is_string(tags): tags = string_to_list(tags) tags = set([x.strip().lower() for x in tags]) instance_tags = instance._init_tags and set([ x.strip().lower() for x in instance._init_tags.split(',')]) or set() if instance_tags != tags: new_tags = set( Tag.objects.get_or_create(name=x.strip().lower())[0] for x in (tags - instance_tags) if x.strip() ) obsolete_tags = Tag.objects.filter(name__in=(instance_tags - tags) ) self._add_tags(instance, new_tags) self._remove_tags(instance, obsolete_tags) return list(tags)