Ruby-on-rails 如何清空/销毁 Rails 中的会话？
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How to empty/destroy a session in rails?
提问by tybro0103
I can't seem to find it anywhere... How do I delete/destroy/reset/empty/clear a user's session in Rails? Not just one value but the whole thing..
我似乎在任何地方都找不到它...如何在 Rails 中删除/销毁/重置/清空/清除用户的会话？不只是一个价值，而是整个事情..
回答by Gdeglin
To clear the whole thing use the reset_session method in a controller.
要清除整个事情，请使用控制器中的 reset_session 方法。
reset_session
Here's the documentation on this method: http://api.rubyonrails.org/classes/ActionController/Base.html#M000668
这是有关此方法的文档：http: //api.rubyonrails.org/classes/ActionController/Base.html#M000668
Resets the session by clearing out all the objects stored within and initializing a new session object.
通过清除存储在其中的所有对象并初始化新会话对象来重置会话。
Good luck!
祝你好运！
回答by Lavixu
session in rails is a hash object. Hence any function available for clearing hash will work with sessions.
rails 中的 session 是一个哈希对象。因此，任何可用于清除散列的函数都适用于会话。
session.clear
or if specific keys have to be destroyed:
或者如果必须销毁特定的密钥：
session.delete(key)
Tested in rails 3.2
在 Rails 3.2 中测试
added
添加
People have mentioned by session={}is a bad idea. Regarding session.clear, Lobati comments- It looks like you're probably better off using reset_session [than session.clear], as it does some other cleaning up beyond what session.clear does. Internally, reset_session calls session.destroy, which itself calls clear as well some other stuff.
人们提到过session={}是一个坏主意。关于session.clear, Lobati 评论 - 看起来你可能最好使用 reset_session [比 session.clear]，因为它做了一些超出 session.clear 的清理工作。在内部， reset_session 调用 session.destroy，它本身也调用 clear 以及其他一些东西。
回答by vladCovaliov
To clear only certain parameters, you can use:
要仅清除某些参数，您可以使用：
[:param1, :param2, :param3].each { |k| session.delete(k) }
回答by vjnan369
to delete a user's session
删除用户的会话
session.delete(:user_id)
回答by David Mesaros
add this code to your ApplicationController
将此代码添加到您的 ApplicationController
def reset_session
@_request.reset_session
end
( Dont know why no one above just mention this code as it fixed my problem ) http://apidock.com/rails/ActionController/RackDelegation/reset_session
（不知道为什么上面没有人提到这段代码因为它解决了我的问题） http://apidock.com/rails/ActionController/RackDelegation/reset_session
