from django.db.models.query import Prefetch
from django.dispatch import Signal
from django.urls import reverse
from django.db.models.query import Prefetch
from django.dispatch import Signal
from django.urls import reverse
created_at = models.DateTimeField(_('creation date'), auto_now_add=True, db_index=True)
changed_at = models.DateTimeField(_('creation date'), auto_now=True, db_index=True)
created_at = models.DateTimeField(_('creation date'), auto_now_add=True, db_index=True)
changed_at = models.DateTimeField(_('creation date'), auto_now=True, db_index=True)
existing = self.pk and self.category != 'set'
ret = super(Tag, self).save(*args, **kwargs)
existing = self.pk and self.category != 'set'
ret = super(Tag, self).save(*args, **kwargs)
# For instance, Pictures do not have 'genre' field.
continue
for tag_name in tag_names:
# For instance, Pictures do not have 'genre' field.
continue
for tag_name in tag_names: