rails serving different content types through a method

I have a cms system for multiple clients. Now i have the following controller:开发者_C百科 websites with 2 methods: index and public.

I would like to serve different types of content through that method. So it could be images, js, css etc.

But how to accomplish this! of course i have this extention.. for example /index.css i check if it exists and then i want to render it. But how to do this with different types of content ?

Have you tried respond_to?

def index
  respond_to do |format|
    format.html # will render views/some_controller/index.html.erb
    format.js # will render views/some_controller/index.js.erb
  end
end

etc