views.py 文件源码

def api_cities(entity=None):
    """
    api route for cities
    :param entity: is the id of a city or None
    :return: json with results or 404
    """
    try:
        city_id = request.args.get('id')
        if entity is None and city_id is None:
            return get_all_from_category(City)
        else:
            if entity is not None:
                data = db.session.query(City).filter_by(city_id=entity).one()
            else:
                data = db.session.query(City).filter_by(city_id=city_id).one()
            return json.dumps(data.dictionary())
    except SQLAlchemyError:
        print("Get cities failed")
        abort(404)