（仍然）获取 RuntimeError：在请求上下文之外工作。尝试 app.app_context() 时

Question

from flask import Flask, request
app = Flask(__name__)

@app.route('/post/', methods=['GET', 'POST'])
def update_post():
    # show the post with the given id, the id is an integer
    postId = request.args.get('postId')
    uid = request.args.get('uid')
    return postId, uid

def getpostidanduid():
    with app.app_context():
        credsfromUI = update_post()
        app.logger.message("The postId is %s and uid is %s" %(request.args.get('postId'), request.args.get('uid')))
        ## Prints 'The post id is red and uid is blue'\
    return credsfromUI

print(getpostidanduid())

if __name__ == '__main__':
    # This is used when running locally. Gunicorn is used to run the
    # application on Google App Engine. See entrypoint in app.yaml.
    app.run(host='127.0.0.1', port=8080, debug=True)
# [END app]

这是一个程序，它接受浏览器 url 中的两位信息（postId 和 uid），并且应该允许我在程序中引用它们。对于我的简单 python 程序，我无法弄清楚为什么我仍然收到 RuntimeError: Working outside of request context。

这通常意味着您尝试使用需要的功能 一个活动的 HTTP 请求。请参阅有关测试的文档 有关如何避免此问题的信息。

我正在使用 with app.app_context() 但它不会让我在请求中获取变量的内容。我已经阅读了文档并查看了其他解决方案，但仍然卡住了。请帮忙？

Answer 1

因此，如果我定义了一个函数，它在 python 中具有全局范围，因此我可以在 app.route()/请求上下文受限函数中调用它来获取 request.args.get(var)。

import datetime
import logging
from flask import Flask, request
app = Flask(__name__)

def testuser(username):
    # show the user profile for that user
    user_string = username.lower()
    return 'Username you appended is %s' %user_string

@app.route('/user/', methods=['GET', 'POST'])
def show_user_profile():
    # show the user profile for that user : http://127.0.0.1:8080/user/?user=gerry
    uid = request.args.get('user')
    print(testuser(uid))
    return 'User %s' %uid

if __name__ == '__main__':
    # This is used when running locally. Gunicorn is used to run the
    # application on Google App Engine. See entrypoint in app.yaml.
    app.run(host='127.0.0.1', port=8080, debug=True)
# [END app]