def translation_locale
      locale = @translation_locale || I18n.locale.to_s
      locale == I18n.default_locale.to_s ? nil : locale
    end
def translation_locale
      locale = @translation_locale || I18n.locale.to_s
      locale == I18n.default_locale.to_s ? nil : locale
    end
Provide the locale which is currently in use with the object or the current global locale.
 If the default is in use, always return nil.