ActiveAdmin Globalize form

aa_globalize_hack.rb

module Formtastic
  class FormBuilder
    def globalize_inputs(*args, &proc)
      index = options[:child_index] || "#{self.object.class.to_s}-#{self.object.object_id}"
      linker = ActiveSupport::SafeBuffer.new
      fields = ActiveSupport::SafeBuffer.new
      ::I18n.available_locales.each do |locale|
        linker << self.template.content_tag(:li,
                                            self.template.content_tag(:a,
                                                                      ::I18n.t('translation', :locale => locale),
                                                                      :href => "#lang-#{locale}-#{index}"
                                                                     )
                                           )
        fields << self.template.content_tag(:div,
                                            self.semantic_fields_for(*(args.dup << self.object.translation_for(locale)), &proc),
                                            :id => "lang-#{locale}-#{index}"
                                           )
      end

      linker = self.template.content_tag(:ul, linker, :class => "language-selection")

      self.template.content_tag(:div, linker + fields, :class => "language-tabs-#{index}") + self.template.content_tag(:script, "$('.language-tabs-#{index}').tabs();", :type => "text/javascript")
    end
  end
end

module ActiveAdmin
  class FormBuilder
    def globalize_inputs(*args, &proc)
      content = with_new_form_buffer { super }
      form_buffers.last << content.html_safe
    end
  end
end

gallery.rb

ActiveAdmin.register Gallery do
  actions :index, :new, :create, :edit, :update, :destroy, :show

  form do |f|
    f.globalize_inputs :translations do |lf|
      lf.inputs :title, :twitter_title, :slug, :lead, :text, :locale do
        lf.input :title
        lf.input :description

        lf.input :locale, :as => :hidden
      end
    end

    f.has_many :photos do |photo|
      photo.inputs do
        photo.input :image, :as => :file, :label => "Image",:hint => photo.object.image.nil? ? photo.template.content_tag(:span, "No Image Yet") : photo.template.image_tag(photo.object.image.url(:thumb))
      end

      photo.globalize_inputs :translations do |lp|
        lp.inputs do
          lp.input :description

          lp.input :locale, :as => :hidden
        end
      end
    end

    f.buttons
  end
end