How can I use folders in Cloudinary?

[aaongr]

In cloudinary api there is the :folder parameter

How can I use it here?

[aaongr]

In alchemy_cloudinary/lib/alchemy_cloudinary/dragonfly_data_store.rb:

# override default behaviour by alchemy_cloudinary gem - use folder
module AlchemyCloudinary
  class DragonflyDataStore

    private

      def public_id(uid)
        # ret = File.basename(uid, ext(uid, true))
        ret = "#{Rails.application.class.parent_name}/#{File.basename(uid, ext(uid, true))}"
        puts "\n ****** ITGLOG - public_id - uid: #{uid}, return: #{ret}\n "
        ret
      end
  end
end

My question is: how can I pass to the gem that I want to use the folder or not
I need somewhere a config value like :foldername