from django.core.cache import caches
from django.db.models.signals import post_save, pre_delete, post_delete
import django.dispatch
-from catalogue.models import Tag, BookMedia, Book, Fragment, Collection
-from catalogue import tasks
+from catalogue.models import BookMedia, Book, Collection
from catalogue.utils import delete_from_cache_by_language
-from newtagging.models import tags_updated
permanent_cache = caches['permanent']
-def _tags_updated_handler(sender, affected_tags, **kwargs):
- # reset tag global counter
- # we want Tag.changed_at updated for API to know the tag was touched
- for tag in affected_tags:
- tasks.touch_tag(tag)
-
- # if book tags changed, reset book tag counter
- if isinstance(sender, Book) and \
- Tag.objects.filter(pk__in=(tag.pk for tag in affected_tags)).\
- exclude(category__in=('book', 'theme', 'set')).count():
- sender.reset_tag_counter()
- # if fragment theme changed, reset book theme counter
- elif isinstance(sender, Fragment) and \
- Tag.objects.filter(pk__in=(tag.pk for tag in affected_tags)).\
- filter(category='theme').count():
- sender.book.reset_theme_counter()
-tags_updated.connect(_tags_updated_handler)
-
-
def _pre_delete_handler(sender, instance, **kwargs):
""" refresh Book on BookMedia delete """
if sender == BookMedia: