小编Chr*_*ris的帖子

我试图从侦听器中访问current_app,以便我可以使用app配置值来订阅哪个频道.但是我收到"RuntimeError:在应用程序上下文之外工作".

这是有问题的代码:

from flask import Blueprint, Response, request, current_app
from socketio import socketio_manage
from socketio.namespace import BaseNamespace
from redis import StrictRedis
import pprint

socketapp = Blueprint('socketapp', __name__)


class MessageNamespace(BaseNamespace):
    def listener(self):
        pprint.pprint(current_app.config)
        r = StrictRedis()
        p = r.pubsub()
        p.subscribe('message-channel')

        messages = r.lrange('message', 0, -1)
        self.emit('message-message', ''.join(messages))

        for m in p.listen():
            if m['type'] == 'message':
                self.emit('message-message', m['data'])

    def on_subscribe(self):
        self.spawn(self.listener)


@socketapp.route('/socket.io/<path:remaining>')
def socketio(remaining):
    try:
        socketio_manage(request.environ, {'/messages': MessageNamespace}, request)
    except BaseException:
        pass
    return Response()


@socketapp.route('/message', methods=['GET'])
def say():
    msg = request.args.get('msg', None) …