Question

I have a controller Partners that I want to server off of http://partners.example.com

1. Is there something built into Rails 3.1 that I can use for this without messing with httpd.conf or creating another virtualhost?

2. What would the routes.rb entry look like for this?

Any help would be greatly appreciated.

PS. I’m not doing wildcard subdomains here — just that one single subdomain.

UPDATE: I’ve gotten the subdomain to work with Ahmish’s solution below, but now all other routes also respond on that subdomain. Is there a way I can have the subdomain respond exclusively to the controller specified?

Answer 1

Indeed you can.

If the PartnersController is a REST based controller, it is as simple as adding a constraints option to the call to resources.

resources :partners, :constraints => { :subdomain => "partners" }

Alternatively, constraints can be called with a block, and all routing calls inside the block will be subject to the set subdomain constraint.

constraints :subdomain => "partners" do
  resources :partners
  ...
end

Requests to the constrained URLs without the correct subdomain will throw a RoutingError.