我得到“RuntimeError：在请求上下文之外工作”。当我实施flask_login

Question

我正在尝试创建一个在谷歌应用引擎上运行的网络应用。我正在尝试使用Flask-Login实现身份验证。 当我运行应用程序时，我收到如下所述的错误消息。

我已经安装了Flask-Login和所有其他库。

我的所有第三方库都在项目文件夹中，如图所示。

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请帮帮我。这让我发疯了。

MyServices.py

import os, sys

on_appengine = os.environ.get('SERVER_SOFTWARE','').startswith('Development')
if on_appengine and os.name == 'nt':
    sys.platform = "Not Windows"
sys.path.insert(1, os.path.join(os.path.abspath('.'), 'lib'))

from lib.flask import Flask
from lib.flask_login import LoginManager

app = Flask(__name__)
app.config.from_pyfile('app.config')

login_manager = LoginManager()
login_manager.init_app(app)

import MyApp

MyApp.register_blueprints(app)

MyApp.py

from app.controllers.auth import auth_bp
from app.controllers.home import home_bp

def register_blueprints(app):
    app.register_blueprint(home_bp)
    app.register_blueprint(auth_bp)

home.py

from lib.flask import render_template, Blueprint
home_bp = Blueprint("home", __name__, template_folder='../templates')


@home_bp.route('/')
def Get():
    return render_template('home/home.html')

auth.py

from app.Repository.UserInfoRepository import UserInfoRepository
from lib.flask import render_template, Blueprint, session, request, make_response, redirect, flash
from lib.flask_login import current_user, login_required, login_user, logout_user, confirm_login, fresh_login_required
from MyServices import login_manager
auth_bp = Blueprint("auth", __name__, template_folder='../templates')


@auth_bp.route('/login', methods=['POST'])
def login():
    userInfoRepository = UserInfoRepository()
    user = userInfoRepository.AuthenticateUser(request)
    if user is not None and user.is_authenticated:
        if login_user(user, remember=True):
            flash("Logged in!")
            return render_template('home/home.html', name=current_user)
        else:
            flash("unable to log you in")       
    return render_template('home/home.html')

def IsLoggedIn():
    if not session.has_key('uid'):
        return False
    return session['ip'] == request.remote_addr

@auth_bp.route('/logout')
@login_required
def logout():
    logout_user()
    return render_template('home/home.html')

@login_manager.unauthorized_handler
def unauthorized_callback():
    return redirect('/')

@login_manager.user_loader
def load_user(id):
    if id is None:
        redirect('/')
    userInfoRepository = UserInfoRepository()
    user = userInfoRepository.GetUserByID(id)
    if user.is_active():
        return user
    else:
        return None

错误消息

[2017-09-15 21:11:47,875] ERROR in app: Exception on / [GET]
Traceback (most recent call last):
  File "D:\PyCharmProjects\myservices\lib\flask\app.py", line 1982, in wsgi_app
    response = self.full_dispatch_request()
  File "D:\PyCharmProjects\myservices\lib\flask\app.py", line 1615, in full_dispatch_request
    return self.finalize_request(rv)
  File "D:\PyCharmProjects\myservices\lib\flask\app.py", line 1632, in finalize_request
    response = self.process_response(response)
  File "D:\PyCharmProjects\myservices\lib\flask\app.py", line 1856, in process_response
    response = handler(response)
  File "D:\PyCharmProjects\myservices\lib\flask_login\login_manager.py", line 380, in _update_remember_cookie
    if 'remember' in session:
  File "D:\PyCharmProjects\myservices\lib\werkzeug\local.py", line 379, in <lambda>
    __contains__ = lambda x, i: i in x._get_current_object()
  File "D:\PyCharmProjects\myservices\lib\werkzeug\local.py", line 306, in _get_current_object
    return self.__local()
  File "D:\PyCharmProjects\myservices\lib\flask\globals.py", line 37, in _lookup_req_object
    raise RuntimeError(_request_ctx_err_msg)
RuntimeError: Working outside of request context.

Answer 1

最后，我能够找出问题所在。问题在于我从lib文件夹处理第三方软件包的方式。

我通过添加__init__.py将lib文件夹放入包中。我正在调用lib.flask来导入烧瓶。但是，flask-login模块导入flask而不是lib.flask。这就是为什么当flask-login模块调用会话变量时，他们从flask模块而不是lib.flask获取它。因此它脱离了背景。 解决方案是从lib文件夹中删除__init__.py。在搜索中添加lib文件夹，我已经通过添加 sys.path.insert（1，os.path.join（os.path.abspath（＆＃39;。＆＃39;），＆＃ 39; LIB＆＃39;））即可。

如果您使用的是PyCharm，它会显示您没有找到导入烧瓶的错误。如果您的代码正常工作，可以忽略错误。

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