_carpet_catalog_items_index.js.haml

:ruby
  puts catalog_items.map { |catalog_item|
    { 'carpet_detail'                         => catalog_item.carpet_detail,
      'carpet_style_colors_manufacturer_name' => catalog_item.carpet_style_colors_manufacturer_name,
      'carpet_style_name'                     => catalog_item.carpet_style_name,
      'scene7_source'                         => scene7_source(catalog_item.carpet_style_colors_scene7_image_id),
      'scene7_source_product_large'           => scene7_source(catalog_item.carpet_style_colors_scene7_image_id, 'product-large'),
      'scene7_source_product_small'           => scene7_source(catalog_item.carpet_style_colors_scene7_image_id, 'product-small'),
      'scene7_source_room_scene'              => scene7_source(catalog_item.carpet_scene7_room_scene_image_id) }
  }.to_json

show.xml.builder

xml.instruct!
xml.publication do
  xml.id    @publication.id
  xml.title @publication.title
  xml.articles do
    @publication.news.ordered.each do |article|
      xml.article do
        xml.id          article.id
        xml.title       article.title
        xml.author      article.author
        xml.publish_on  article.story_date.to_s(:story_date)
      end
    end
  end
end