Graceful secret key rotation for the signed cookie store in Rails. Use this when you'd rather not sign everyone out to rotate your session secret.

This gem provides a Rack middleware which will regenerate the session cookie with one generated by the new secret if it was written with the old secret. This way we don't have to monkey patch Rails internals and Rails only has to know about the new session key.

Add this line to your application's Gemfile:

gem 'rails_session_key_rotator'

And then execute:

$ bundle

In config/application.rb:

config.middleware.insert_before(ActionDispatch::Session::CookieStore, RailsSessionKeyRotator,
                               :old_secret => Secrets.old_session_secret,
                               :new_secret => Secrets.session_secret,
                               :key => 'myapp_session')

1. Fork it ( http://github.com/envato/rails_session_key_rotator/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request