map_associations

# File actionpack/lib/action_dispatch/routing/deprecated_mapper.rb, line 401
        def map_associations(resource, options)
          map_has_many_associations(resource, options.delete(:has_many), options) if options[:has_many]

          path_prefix = "#{options.delete(:path_prefix)}#{resource.nesting_path_prefix}"
          name_prefix = "#{options.delete(:name_prefix)}#{resource.nesting_name_prefix}"

          Array(options[:has_one]).each do |association|
            resource(association, options.slice(*INHERITABLE_OPTIONS).merge(:path_prefix => path_prefix, :name_prefix => name_prefix))
          end
        end