this code is untested and need a good rewrite, but work. treat it as a prototype.

Add the gem to your bundler:

  gem "rails_admin"
  gem "globalize3"
  gem "rails_admin_globalize"

Add globalize to the list of actions in rails_admin's initializer:

  RailsAdmin.config do |config|

    config.actions do
      dashboard do ; end
      globalize do ; end
      index do ; end
      new do ; end
      export do ; end
      bulk_delete do ; end
      show do ; end
      edit do ; end
      delete do ; end
      history_show do ; end
      show_in_app do ; end
    end

  end

• a translation Action appear in rails_admin near the edit button .
• the configuration for the field was ereditated from edit action configuration .
• has_many and has_one fields of translated models is included in the translations form .
• the translation look for I18n.avaiable_locales
• take this as a prototype and use as your own risk :-)
• clone/fork/improve