带有ajax响应的Flask没有重定向

Question

当我从flask view函数将URL发送回javascript文件时，不会发生重定向，而是返回一个Type error: 'NoneType' object is not subscriptable。在

我的视图功能：

@app.route('/login', methods=['POST','GET'])
def login():
    if request.method == "POST":
        print('check')
        values = request.json
        print(values)
        result = db.session.query(Emp_Details).filter_by(ID=values['ID']).first()
        print(result.Password)
        if result.Password == values['Password'] and result.Department == 'HR':
                print(jsonify(url=url_for('hr_department')))
                return jsonify(url=url_for('hr_department'))
        elif result.Password == values['Password'] and result.Department == 'DEVELOPMENT':
                return url_for('devs')
        else:
            abort(401)
    else:

        return render_template("login.html")

我的Ajax请求：

^{pr2}$

控制台中的日志：

check
{'Password': 'leechan2', 'ID': '10090'}
leechan2
<Response 25 bytes [200 OK]>
127.0.0.1 - - [26/Dec/2016 23:34:37] "POST /login HTTP/1.1" 200 -
check
None
127.0.0.1 - - [26/Dec/2016 23:34:37] "POST /login HTTP/1.1" 500 -
Traceback (most recent call last):
  File "/usr/local/lib/python3.5/dist-packages/flask/app.py", line 2000, in __call__
    return self.wsgi_app(environ, start_response)
  File "/usr/local/lib/python3.5/dist-packages/flask/app.py", line 1991, in wsgi_app
    response = self.make_response(self.handle_exception(e))
  File "/usr/local/lib/python3.5/dist-packages/flask/app.py", line 1567, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/usr/local/lib/python3.5/dist-packages/flask/_compat.py", line 33, in reraise
    raise value
  File "/usr/local/lib/python3.5/dist-packages/flask/app.py", line 1988, in wsgi_app
    response = self.full_dispatch_request()
  File "/usr/local/lib/python3.5/dist-packages/flask/app.py", line 1641, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/usr/local/lib/python3.5/dist-packages/flask/app.py", line 1544, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/usr/local/lib/python3.5/dist-packages/flask/_compat.py", line 33, in reraise
    raise value
  File "/usr/local/lib/python3.5/dist-packages/flask/app.py", line 1639, in full_dispatch_request
    rv = self.dispatch_request()
  File "/usr/local/lib/python3.5/dist-packages/flask/app.py", line 1625, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/home/gautham/Intern-flask/Intern/App.py", line 24, in login
    result = db.session.query(Emp_Details).filter_by(ID=values['ID']).first()
TypeError: 'NoneType' object is not subscriptable
127.0.0.1 - - [26/Dec/2016 23:34:37] "GET /login?__debugger__=yes&cmd=resource&f=style.css HTTP/1.1" 200 -
127.0.0.1 - - [26/Dec/2016 23:34:37] "GET /login?__debugger__=yes&cmd=resource&f=debugger.js HTTP/1.1" 200 -
127.0.0.1 - - [26/Dec/2016 23:34:37] "GET /login?__debugger__=yes&cmd=resource&f=jquery.js HTTP/1.1" 200 -
127.0.0.1 - - [26/Dec/2016 23:34:37] "GET /login?__debugger__=yes&cmd=resource&f=console.png HTTP/1.1" 200 -
127.0.0.1 - - [26/Dec/2016 23:34:37] "GET /login?__debugger__=yes&cmd=resource&f=console.png HTTP/1.1" 200 -
127.0.0.1 - - [26/Dec/2016 23:34:37] "GET /login?__debugger__=yes&cmd=resource&f=style.css HTTP/1.1" 200 -

Answer 1

您发送的data似乎有问题：

如果我使用

data = {'ID': 'foobar'};

HTML格式：

^{pr2}$

烧瓶：

@app.route('/test/ajax', methods=['GET', 'POST'])
def test_ajax():

    if request.method == "POST":
        data = request.json
        print('data:', data)

        result = {'url': url_for('index')}
        print('result:', result)

        return jsonify(result)

    else:
        return render_template('test-ajax.html')