如何使用Django在每个请求的浏览器关闭时设置cookie过期时间

我想让用户有可能决定使用持久会话。为此，我在登录页面中添加了一个

记住我

复选框；如果选中该复选框，则会话cookie将在1周后过期，如果未选中，cookie将在浏览器关闭时过期。 我在浏览器关闭时强制cookie过期时遇到一些问题。我正在使用

request.session

对象的

set\u expiry

方法。 文件规定：

在我看来，我正在设置

request.session.set\u expiration（0）

，但是cookie过期总是使用

setting.session\u cookie\u AGE

值设置的

我尝试调试代码，似乎在

SessionMiddleware

中调用

request.session.get\u expiration\u age（）

方法时，返回的值等于

setting.session\u COOKIE\u age

，即使我将过期设置为0

我试图查看

get\u expiration\u age

方法的文档，它说：

似乎，根据

设置到期日

，如果我将到期日设置为0，cookie将在浏览器关闭时到期，但是根据

获取到期日

，如果cookie设置为在浏览器关闭时到期，其到期日等于

设置。会话cookie\u age

。在我看来，这似乎是一个矛盾

我是遗漏了什么还是遇到了错误

set_expiry(value)

Sets the expiration time for the session. You can pass a number of different values:

- If value is an integer, the session will expire after that many seconds of inactivity. For example, calling request.session.set_expiry(300) would make the session expire in 5 minutes.
- If value is a datetime or timedelta object, the session will expire at that specific date/time. Note that datetime and timedelta values are only serializable if you are using the PickleSerializer.
- If value is 0, the user’s session cookie will expire when the user’s Web browser is closed.
- If value is None, the session reverts to using the global session expiry policy.
Reading a session is not considered activity for expiration purposes. Session expiration is computed from the last time the session was modified.

get_expiry_age()

Returns the number of seconds until this session expires. For sessions with no custom expiration (or those set to expire at browser close), this will equal SESSION_COOKIE_AGE.

This function accepts two optional keyword arguments:

- modification: last modification of the session, as a datetime object. Defaults to the current time.
- expiry: expiry information for the session, as a datetime object, an int (in seconds), or None. Defaults to the value stored in the session by set_expiry(), if there is one, or None.