Hi,

http://apidock.com/rails/ActionController/RequestForgeryProtection only 
maintains one CSRF token at a time. When a user visits some site, he gets a 
new token in the session. He then might open a linked site of the same 
rails app in a new browser tab (maybe some info he'd like to read), and 
again he will get a new token. Then he changes to the first tab again and 
submits a form on that site (e.g. registration). Then he will get an 
InvalidAuthenticityToken error, but it was a legal and common user behavior 
rather that request forgery.

- Is there a way to store e.g. a map with POST URLs as keys and CSFR tokens 
as values?
- Or storing a list of the last n CSFR tokens? The authentication procedure 
should then first check the newest token etc.

Luma

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