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我正在尝试在我的 Flask 应用程序中调试一个视图，该视图返回 500 状态并TypeError: 'bool' object is not callable在回溯中出现错误。login_user来自 Flask-Login的视图调用然后返回True以指示登录成功。

我已经调试了，直到现在app_iter = app(environ, start_response)是app一个布尔值，True而不是 Flask 应用程序对象。

Traceback (most recent call last):
  File "D:\Python27\lib\site-packages\flask\app.py", line 1836, in __call__
    return self.wsgi_app(environ, start_response)
  File "D:\Python27\lib\site-packages\flask\app.py", line 1820, in wsgi_app
    response = self.make_response(self.handle_exception(e))
  File "D:\Python27\lib\site-packages\flask\app.py", line 1403, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "D:\Python27\lib\site-packages\flask\app.py", line 1817, in wsgi_app
    response = self.full_dispatch_request()
  File "D:\Python27\lib\site-packages\flask\app.py", line 1478, in full_dispatch_request
    response = self.make_response(rv)
  File "D:\Python27\lib\site-packages\flask\app.py", line 1577, in make_response
    rv = self.response_class.force_type(rv, request.environ)
  File "D:\Python27\lib\site-packages\werkzeug\wrappers.py", line 824, in force_type
    response = BaseResponse(*_run_wsgi_app(response, environ))
  File "D:\Python27\lib\site-packages\werkzeug\wrappers.py", line 57, in _run_wsgi_app
    return _run_wsgi_app(*args)
  File "D:\Python27\lib\site-packages\werkzeug\test.py", line 854, in run_wsgi_app
    app_iter = app(environ, start_response)
TypeError: 'bool' object is not callable

@app.route('/login', methods=['POST'])
def login():
    username = request.form['username']
    user = User.query.filter_by(username=username).first()

    if user:
        login_user(user)
        return True

    return False
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1 回答 1

29

在 Flask 中，视图必须返回以下之一：

  • 一个字符串
  • 一个Response对象（或子类）
  • (string, status, headers)或的元组(string, status)
  • 一个有效的 WSGI 应用程序

前 3 个选项的 Flask 测试，如果它们不适合，则假定它是第四个。你在某处返回了 True，它被视为 WSGI 应用程序。

请参阅文档中的关于响应。

于 2014-01-28T13:26:50.600 回答