Rails Plugin: Dynamic Session Expiry

With session_lifetime you can set after how much time of inactivity your session should expire, you can execute an action when the session expires, and you can set where to redirect_to after session expiry.
Example

  class ApplicationController << ActionController::Base
    expires_session :time => 2.hours, :redirect_to => '/login'

    protected
    def on_expiry
      flash[:notice] = "Your session has been expired, and you have been logged out."
    end
  end

Get it from

git://github.com/DefV/session_lifetime.git