resources :traces, :path => "gpx", :only => [:create, :show, :update, :destroy], :id => /\d+/ do
scope :module => :traces do
resource :data, :only => :show
resources :traces, :path => "gpx", :only => [:create, :show, :update, :destroy], :id => /\d+/ do
scope :module => :traces do
resource :data, :only => :show