Python-Flask视图引发TypeError:“ bool”对象不可调用
我试图调试我的Flask
应用程序中的视图,该视图返回500状态,并TypeError: 'bool' object is not callable
在追溯中出现错误。然后login_user
从Flask-Login
进行的视图调用返回True以指示登录成功。
我进行了调试,直到app_iter = app(environ, start_response)
,app现在是具有值True而不是Flask应用程序对象的布尔值。
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
回答:
在Flask中,视图必须返回以下之一:
- a string
- a Response object (or subclass)
- a tuple of (string, status, headers) or (string, status)
- a valid WSGI application
前三个选项的Flask测试,如果不合适,则假定为第四个。你在某个地方返回了True,它将被视为WSGI应用程序。
请参阅文档中的关于响应。
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