def delete(self):
"""
Deletes the records in the current QuerySet.
"""
assert self.query.can_filter(), \
"Cannot use 'limit' or 'offset' with delete."
del_query = self._clone()
# Disable non-supported fields.
del_query.query.select_related = False
del_query.query.clear_ordering()
# Delete objects in chunks to prevent the list of related objects from
# becoming too long.
while 1:
# Collect all the objects to be deleted in this chunk, and all the
# objects that are related to the objects that are to be deleted.
seen_objs = CollectedObjects()
for object in del_query[:CHUNK_SIZE]:
object._collect_sub_objects(seen_objs)
if not seen_objs:
break
delete_objects(seen_objs)
# Clear the result cache, in case this QuerySet gets reused.
self._result_cache = None
def delete(self):
"""
Deletes the records in the current QuerySet.
"""
assert self.query.can_filter(), \
"Cannot use 'limit' or 'offset' with delete."
del_query = self._clone()
# Disable non-supported fields.
del_query.query.select_related = False
del_query.query.clear_ordering()
# Delete objects in chunks to prevent the list of related objects from
# becoming too long.
seen_objs = None
del_itr = iter(del_query)
while 1:
# Collect a chunk of objects to be deleted, and then all the
# objects that are related to the objects that are to be deleted.
# The chunking *isn't* done by slicing the del_query because we
# need to maintain the query cache on del_query (see #12328)
seen_objs = CollectedObjects(seen_objs)
for i, obj in izip(xrange(CHUNK_SIZE), del_itr):
obj._collect_sub_objects(seen_objs)
if not seen_objs:
break
delete_objects(seen_objs)
# Clear the result cache, in case this QuerySet gets reused.
self._result_cache = None
def delete(self, using=None):
using = using or router.db_for_write(self.__class__, instance=self)
assert self._get_pk_val() is not None, "%s object can't be deleted because its %s attribute is set to None." % (self._meta.object_name, self._meta.pk.attname)
# Find all the objects than need to be deleted.
seen_objs = CollectedObjects()
self._collect_sub_objects(seen_objs)
# Actually delete the objects.
delete_objects(seen_objs, using)
def delete(self):
assert self._get_pk_val(
) is not None, "%s object can't be deleted because its %s attribute is set to None." % (
self._meta.object_name, self._meta.pk.attname)
# Find all the objects than need to be deleted.
seen_objs = CollectedObjects()
self._collect_sub_objects(seen_objs)
# Actually delete the objects.
delete_objects(seen_objs)
def delete(self, using=None):
using = using or self._state.db or DEFAULT_DB_ALIAS
connection = connections[using]
assert self._get_pk_val(
) is not None, "%s object can't be deleted because its %s attribute is set to None." % (
self._meta.object_name, self._meta.pk.attname)
# Find all the objects than need to be deleted.
seen_objs = CollectedObjects()
self._collect_sub_objects(seen_objs)
# Actually delete the objects.
delete_objects(seen_objs, using)
