What's the easiest way to point a subdomain in Rails to a specific controller?

Question

For example, http://foo.myapp.com/bar/23 would render FooController#bar.

Answer 1

Check out the plugin subdomain_fu

Answer 2

I have been using subdomain_fu for quite a while. Recently I discovered subdomain_routes that seems to be a really powerful alternative.

Answer 3

I am using subdomain_routes with complex routing and it appears to make the application very slow.