I18n.default_locale = :en LANGUAGES = [ ['English', 'en'], ['日本語', 'ja'], ['中文', 'zh-CN'] ] protected def set_i18n_locale_from_params if params[:locale] if I18n.available_locales.map(&:to_s).includes?(params[:locale]) I18n.locale = params[:locale] else flash.now[:danger] = "#{params[:locale]} translation not available" end end end def default_url_options { locale: I18n.locale }.merge(super) end とす
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