python - flask登录中如何实现localize_callback

Question

我看到了官方文档，它没有任何关于回调的细节。

http://flask-login.readthedocs.io/en/latest/

By default, the LoginManager uses flash to display messages when a user is required to log in. These messages are in English. If you require localization, set the localize_callback attribute of LoginManager to a function to be called with these messages before they’re sent to flash, e.g. gettext. This function will be called with the message and its return value will be sent to flash instead.

我尝试使用

@login_manager.localize_callback
def localize_callback():
    return 'local string'

当我这样做的时候。它告诉我

TypeError: 'NoneType' object is not callable

这里有什么问题？

Answer 1

我稍微调整了代码。虽然不合适但它可以工作

def localize_callback(*args, **kwargs):
    return 'local string'
login_manager.localize_callback = localize_callback