gistfile1.txt

# ---------------------------------------
# Helpers for creating translated routes
# ---------------------------------------

module RouteTranslation

  BASE_LOCALES       = [:de, :'de-CH']
  URL_PREFIX_LOCALES = [:'fr-CH']

  LOCALES = [BASE_LOCALES, URL_PREFIX_LOCALES].flatten

  ROUTE_HELPER_CONTAINER = [
    ActionController::Base,
    ActionView::Base,
    ActionMailer::Base,
    ActionDispatch::Routing::UrlFor,
    ActionController::TestCase
  ].freeze

  def translated_named_route route_name, to
    LOCALES.each do |locale|
      base_locale = BASE_LOCALES.include?(locale)
      path = "#{base_locale ? nil : locale}/#{I18n.t("routes.#{route_name}", locale: locale)}"
      as = "#{route_name}#{"_#{locale.to_s.downcase.sub('-','_')}"}"
      match path => to, as: as, locale: locale
    end
    RouteTranslation.add_untranslated_helpers_to_controllers_and_views(route_name)
  end

  private

  # Taken (and slightly modified) from translate_routes gem: https://github.com/raul/translate_routes
  #
  # Add standard route helpers for default locale e.g.
  #   I18n.locale = :de
  #   people_path -> people_de_path
  #   I18n.locale = :fr
  #   people_path -> people_fr_path
  #
  def self.add_untranslated_helpers_to_controllers_and_views old_name
    ['path', 'url'].map do |suffix|
      new_helper_name = "#{old_name}_#{suffix}"

      ROUTE_HELPER_CONTAINER.each do |helper_container|
        helper_container.send :define_method, new_helper_name do |*args|
          send "#{old_name}_#{I18n.locale.to_s.downcase.sub('-','_')}_#{suffix}", *args
        end
      end
      # puts "Added #{new_helper_name} route helper."
      new_helper_name.to_sym
    end
  end


end