module Dolly
  module Timestamps

    def timestamps!
      Dolly::Document.class_eval do

        property :created_at, :updated_at, class_name: DateTime

        def set_created_at
          self.created_at ||= DateTime.now
        end

        def set_updated_at
          self.updated_at = DateTime.now
        end
      end
    end
  end
end