用于选择和i18n的选项

参考本文: https://apidock.com/rails/v3.2.8/ActionView/Helpers/FormOptionsHelper/options_for_select

options_for_select({ "Basic" => "$20", "Plus" => "$40" }, "$40")
  <option value="$20">Basic</option>\n<option value="$40" selected="selected">Plus</option>

假设在您的区域设置文件中,语言的名称如下:

en:
  languages:
    en: 'English'
    de: 'German'
    ga: 'Irish'
    fr: 'French'

我想你需要的是如下的东西:

f.select :language, options_for_select(
  LanguageName::LANGUAGES.map { |lang| [t("languages.#{lang}"), lang] }.to_h
  f.object.language || t('languages.fr')
)

当然,最好将方法提取到帮助文件中:

class ApplicationHelper
  def map_locale_names(locale)
    LanguageName::LANGUAGES.map { |lang| [t("languages.#{lang}", locale: locale), lang] }.to_h
  end
end

这样,您的方法将变成:

f.select :language, options_for_select(
  map_locale_names(locale: params[:locale]),
  f.object.language || t('languages.fr')
)

希望这有帮助。