Method _post_update

lib/sqlalchemy/orm/dependency.py:321–327

(self, state, uowcommit, related, is_m2o_delete=False)

        return uow.memo(("reverse_key", process_key), set)

    def _post_update(self, state, uowcommit, related, is_m2o_delete=False):
        for x in related:
            if not is_m2o_delete or x is not None:
                uowcommit.register_post_update(
                    state, [r for l, r in self.prop.synchronize_pairs]
                )
                break

    def _pks_changed(self, uowcommit, state):
        raise NotImplementedError()