Rails routes.rb (routing with :as or :path)

Hi.

I'm using Rails 2.3.16 and Ruby 1.8.7

I have the next routing:

map.namespace :controller1 do |c1|
c1.resources :controller2, :member => { :action1 => :get, :action2 => :get }
end

Now, I access with the url:

domain/controller1/controller2/action1/:id

I need acces action1 with url

domain/:id

I tried many ways but I can't.

How can I do this with the rails routing?

Can I get the action1 with the two ways?

https://stackoverflow.com/questions/47077630/rails-routes-rb-routing-with-as-or-path