Action Controllers are the core of a web request in Rails. This guide covers how controllers work and how they fit into the request cycle of your application. It includes sessions, filters, cookies, data streaming, and dealing with exceptions raised by a request, among other topics.
The Rails router recognizes URLs and dispatches them to a controller's action. This guide covers the user-facing features of Rails routing. If you want to understand how to use routing in your own Rails applications, start here.
