TypeError: 'bool' object is not callable g.user.is_authenticated()

Question

我正在尝试在我的 Flask 应用程序中执行此操作。但是我收到这样的错误

TypeError: 'bool' object is not callable.

对应代码如下：

@app.before_request
def before_request():
    g.user = current_user
    if g.user.is_authenticated():
       g.search_form = None

Answer 1

这是因为 is_authenticated 不是函数，只是一个布尔值。请尝试以下操作：

@app.before_request
def before_request():
    g.user = current_user
    if g.user.is_authenticated:
       g.search_form = None

Answer 2

尝试将 if g.user.is_authenticated(): 替换为 if g.user.is_authenticated:，如下所示：

@app.before_request
def before_request():
    g.user = current_user
    if g.user.is_authenticated:
       g.search_form = None

来自 the document：

is_authenticated

Returns True if the user is authenticated, i.e. they have provided valid credentials. (Only authenticated users will fulfill the criteria of login_required.)

正如文档所说，is_authenticated 是一个布尔值（True 或 False）。

然而，它在过去是一个函数，but it has been changed to boolean at version 3.0：

BREAKING:
The is_authenticated, is_active, and is_anonymous
members of the user class are now properties, not methods. Applications should update their user classes accordingly.

TypeError: 'bool' object is not callable g.user.is_authenticated()

TypeError: 'bool' object is not callable g.user.is_authenticated()

python

flask

flask-login