hacks.rb

# https://rails.lighthouseapp.com/projects/8994/tickets/4743-session-cookie-breaks-if-used-with-custom-cookie-in-rails-238
# http://gist.github.com/431811
if Rails.version == '2.3.8'
  class RackRailsCookieHeaderHack
    def initialize(app)
      @app = app
    end

    def call(env)
      status, headers, body = @app.call(env)
      if headers['Set-Cookie'] && headers['Set-Cookie'].respond_to?(:collect!)
        headers['Set-Cookie'].collect! { |h| h.strip }
      end
      [status, headers, body]
    end
  end

  Rails.configuration.after_initialize do
    ActionController::Dispatcher.middleware.insert_before(
      ActionController::Base.session_store, RackRailsCookieHeaderHack
    )
  end
end