# Category
def category_deleted_listener(sender, instance, **kwargs):
update_category_cache(instance)
pre_delete.connect(category_deleted_listener, sender=Category)
def category_saved_listener(sender, instance, **kwargs):
update_category_cache(instance)
pre_save.connect(category_saved_listener, sender=Category)
def category_changed_listener(sender, **kwargs):
update_category_cache(sender)
category_changed.connect(category_changed_listener)
def product_categories_changed_listener(sender, **kwargs):
instance = kwargs['instance']
reverse = kwargs['reverse']
pk_set = kwargs['pk_set']
if reverse:
product = instance
cache_key = "%s-product-categories-%s-%s" % (settings.CACHE_MIDDLEWARE_KEY_PREFIX, product.id, True)
cache.delete(cache_key)
cache_key = "%s-product-categories-%s-%s" % (settings.CACHE_MIDDLEWARE_KEY_PREFIX, product.id, False)
cache.delete(cache_key)
else:
if pk_set:
pre_delete.connect(category_deleted_listener, sender=Category)
def category_saved_listener(sender, instance, **kwargs):
update_category_cache(instance)
pre_save.connect(category_saved_listener, sender=Category)
def category_changed_listener(sender, **kwargs):
update_category_cache(sender)
category_changed.connect(category_changed_listener)
def product_categories_changed_listener(sender, **kwargs):
instance = kwargs['instance']
reverse = kwargs['reverse']
pk_set = kwargs['pk_set']
if reverse:
product = instance
cache_key = "%s-product-categories-%s-%s" % (
settings.CACHE_MIDDLEWARE_KEY_PREFIX, product.id, True)
cache.delete(cache_key)
cache_key = "%s-product-categories-%s-%s" % (
settings.CACHE_MIDDLEWARE_KEY_PREFIX, product.id, False)
cache.delete(cache_key)