app.py 文件源码

def configure_before_handlers(app):
    """Configures the before request handlers."""

    @app.before_request
    def update_lastseen():
        """Updates `lastseen` before every reguest if the user is
        authenticated."""

        if current_user.is_authenticated:
            current_user.lastseen = datetime.datetime.utcnow()
            db.session.add(current_user)
            db.session.commit()

    if app.config["REDIS_ENABLED"]:
        @app.before_request
        def mark_current_user_online():
            if current_user.is_authenticated:
                mark_online(current_user.username)
            else:
                mark_online(request.remote_addr, guest=True)