web.py 文件源码

def get_pagination_limit(new_limit):
    """Defines the right pagination limit and sets cookies accordingly.
    @params new_limit: new pagination limit
    """
    default_limit = 50

    limit_cookie = request.get_cookie("pagination_limit")
    logging.info("Got cookie: {0}".format(limit_cookie))

    cookie_expires = time.mktime((datetime.now() + timedelta(days=365)).timetuple())

    if new_limit <= 0:
        if limit_cookie:
            try:
                limit = int(limit_cookie)
                logging.info("Using limit from cookie: {0}".format(limit))
                response.set_cookie("pagination_limit", str(limit), path="/", expires=cookie_expires)
            except Exception as e:
                logging.error("Cookie: {0}, exception: {1}".format(limit_cookie, e))
                limit = default_limit
        else:
            limit = default_limit
            logging.info("Using default limit: {0}".format(limit))
    else:
        limit = new_limit
        logging.info("Setting new limit: {0}".format(limit))
        response.set_cookie("pagination_limit", str(limit), path="/", expires=cookie_expires)

    return limit