gem "activeadmin-globalize", github: 'alexhifer/activeadmin-globalize'

active_admin_translates :title, :content do
  validates_presence_of :title
end

# if you are using Rails 4 or Strong Parameters:
permit_params translations_attributes: [
                :id, :locale, :title, :content
              ]

index do
  # ...
  translation_status
  actions
end

form do |f|
  # ...
  f.translated_inputs "Translated fields", switch_locale: false do |t|
    t.input :title
    t.input :content
  end
  # ...
end