collection.rb

 articles {

   id      "http://example.com/json"
   title   "Feed"
   updated time

   author {
     name  "John Doe"
     email "joedoe@example.com"
   }

   author {
     name  "Foo Bar"
     email "foobar@example.com"
   }

  link("next"    , url_for(@some_articles))
  link("previous", "http://a.link.com/previous")

  each(@some_articles) do |article|
   	id      "uri:#{article[:id]}"
   	title   article[:title]
   	updated article[:updated]

   	link("image", "http://example.com/image/1")
   	link("image", "http://example.com/image/2", :type => "application/json")
  end
 }

element.rb

article {
	id      "uri:#{@article[:id]}"
	title   @article[:title]
	updated @article[:updated]

	link("image", "http://example.com/image/1")
	link("image", "http://example.com/image/2", :type => "application/json")
}