How can I identify unused i18n keys?

Question

I\'m working on an existing Rails app and am using a localization file, en.yml, to hold most of the app\'s text. At the moment, we aren\'t localizing into any other

Answer 1

Take a look at this article about "Key issues internationalizing your app". The paragraph that interests you is: "Getting rid of unused translations".

Specifically, it recommends looking through your source code and also logging what translation keys get used in your production app, as follows:

module I18n
  module Registry
    protected
    def lookup(locale, key, scope = [], options = {})
      @log ||= Logger.new(File.join(Rails.root, 'log', 'i18n_registry.log'))
      @log.info key
      super
    end
  end
end

I18n::Backend::Simple.send :include, I18n::Registry

Hope that helps.