使用devise在Rails 3.1和2.3.12之间共享会话

Question

I'm attempting to share sessions between a rails 3.1 app and rails 2.3.12 app. The rails 3.1 app is a subdomain of the 2.3.12 app. Both apps use devise for authentication (different versions for rails compatibility).

I've managed to get it working to the point where session variables are accessible from either app, but it fails after sign in. It seems the reason it fails is because session[:session_id] gets reset on sign in, leaving the other app with the old session_id.

How can sessions continue to be shared after sign in? I've attempted to prevent devise from resetting the session_id but couldn't see where that was happening.

Answer 1

Check the docs on Rails sessions specially "2.5 Session Storage".

You need to save the sessions and probably you'll need to have the same keys on both applications.