ruby-on-rails – 如果在特定区域设置中缺少翻译,如何配置i18n以

这是答案：

# application.rb

# rails will fallback to config.i18n.default_locale translation
config.i18n.fallbacks = true

# rails will fallback to en,no matter what is set as config.i18n.default_locale
config.i18n.fallbacks = [:en]

# fallbacks value can also be a hash - a map of fallbacks if you will
# missing translations of es and fr languages will fallback to english
# missing translations in german will fallback to french ('de' => 'fr')
config.i18n.fallbacks = {'es' => 'en','fr' => 'en','de' => 'fr'}