resources :changesets, :path => "changeset", :id => /\d+/, :only => :show do
match :subscribe, :unsubscribe, :on => :member, :via => [:get, :post]
resources :changesets, :path => "changeset", :id => /\d+/, :only => :show do
match :subscribe, :unsubscribe, :on => :member, :via => [:get, :post]