Method delete

django/db/models/query.py:1310–1338

Delete the records in the current QuerySet.

(self)

        )

    def delete(self):
        """Delete the records in the current QuerySet."""
        self._not_support_combined_queries("delete")
        if self.query.is_sliced:
            raise TypeError("Cannot use 'limit' or 'offset' with delete().")
        if self.query.distinct_fields:
            raise TypeError("Cannot call delete() after .distinct(*fields).")
        if self._fields is not None:
            raise TypeError("Cannot call delete() after .values() or .values_list()")

        del_query = self._chain()

        # The delete is actually 2 queries - one to find related objects,
        # and one to delete. Make sure that the discovery of related
        # objects is performed on the same database as the deletion.
        del_query._for_write = True

        # Disable non-supported fields.
        del_query.query.select_for_update = False
        del_query.query.select_related = False
        del_query.query.clear_ordering(force=True)

        collector = Collector(using=del_query.db, origin=self)
        collector.collect(del_query)
        num_deleted, num_deleted_per_model = collector.delete()

        # Clear the result cache, in case this QuerySet gets reused.
        self._result_cache = None
        return num_deleted, num_deleted_per_model

    delete.alters_data = True
    delete.queryset_only = True