Function _validate_version_id

lib/sqlalchemy/orm/loading.py:1423–1437

(mapper, state, dict_, row, getter)

def _validate_version_id(mapper, state, dict_, row, getter):
    if mapper._get_state_attr_by_column(
        state, dict_, mapper.version_id_col
    ) != getter(row):
        raise orm_exc.StaleDataError(
            "Instance '%s' has version id '%s' which "
            "does not match database-loaded version id '%s'."
            % (
                state_str(state),
                mapper._get_state_attr_by_column(
                    state, dict_, mapper.version_id_col
                ),
                getter(row),
            )
        )


def _decorate_polymorphic_switch(