@classmethod
def query_route_list(cls, session):
    """
        :return list of *all* Route orm objects queried from the db
        """
    from .route import RouteFilter
    routes = session.query(cls).filter(~cls.route_id.in_(session.query(
        RouteFilter.route_id))).order_by(cls.route_sort_order).all()
    return routes
