```ruby
module TranslatableRoutes
  module ActionDispatch
    module NamedRouteCollection
      extend ActiveSupport::Concern
 
      def define_i18n_url_helper(name)
        %w(path url).each do |type|
          helper = :"#{name}_#{type}"
          @module.remove_possible_method helper
          @module.module_eval do
            define_method helper do |*args|
              options = args.extract_options!
              suffix = (options[:locale] || I18n.locale).to_s.gsub('-', '_').downcase
              send "#{name}_#{suffix}_#{type}", *(args << options)
            end
          end
          helpers << helper
        end
      end
 
    end
  end
end
```

FIX define_i18n_url_helper with Rails 4.2
user
```ruby
module TranslatableRoutes
  module ActionDispatch
    module NamedRouteCollection
      extend ActiveSupport::Concern

      def define_i18n_url_helper(name)
        %w(path url).each do |type|
          helper = :"#{name}_#{type}"

          if Rails::VERSION::MAJOR == 4 && Rails::VERSION::MINOR >= 2
            @module = case type
              when 'path' then @path_helpers_module
              when 'url'  then @url_helpers_module
            end
          end

          @module.remove_possible_method helper
          @module.module_eval do
            define_method helper do |*args|
              options = args.extract_options!
              suffix = (options[:locale] || I18n.locale).to_s.gsub('-', '_').downcase
              send "#{name}_#{suffix}_#{type}", *(args << options)
            end
          end
          helpers << helper
        end
      end

    end
  end
end
```
assistant