builder.builder

xml.instruct!
xml.text! xml_stylesheet 'main'
xml.text! xml_stylesheet 'coderay'
xml.feed(:xmlns => "http://www.w3.org/2005/Atom", 'xml:base' => feed[:url]) do
  unless tags
    xml.title "Blog Posts : #{Nex3::Config['blog']['name']}"
  else
    xml.title "Blog Posts About #{tags.map(&:titleize).to_sentence} : #{Nex3::Config['blog']['name']}"
  end
  xml.id feed[:url]
  xml.updated @posts[0].created_at.xmlschema
  xml.icon image_path('favicon.png')
  xml.author do
    xml.name feed[:name]
    xml.email feed[:email]
    xml.uri feed[:url]
  end
  xml.link(:rel => 'self', :href => posts_path + '.atom')
  xml.link(:rel => 'alternate', :type => 'text/html', :href => 'posts')
  for post in @posts
    xml.entry do
      xml.id post.uid
      xml.title h post.title
      xml.updated post.updated_at.xmlschema
      xml.published post.created_at.xmlschema
      xml.author do
        xml.name feed[:name]
        xml.email feed[:email]
        xml.uri feed[:url]
      for tag in post.tags
        xml.category(:term => tag.name, :label => tag.name.titleize)
      end
      xml.content(:type => 'xhtml') do
        xml.div(:id => "content", :xmlns => "http://www.w3.org/1999/xhtml") do
          xml.text! stylesheet_link_tag 'main'
          xml.text! stylesheet_link_tag 'coderay'
          xml.text! post_content post
        end
      end
      xml.link(:rel => 'alternate', :href => post_path(post))
    end
  end
end

haml.haml

!!! XML
= xml_stylesheet 'main'
= xml_stylesheet 'coderay'
%feed{:xmlns => "http://www.w3.org/2005/Atom", 'xml:base' => feed[:url]}
  - unless tags
    %title== Blog Posts : #{Nex3::Config['blog']['name']}
  - else
    %title== Blog Posts About #{tags.map(&:titleize).to_sentence} : #{Nex3::Config['blog']['name']}
  %id= feed[:url]
  %updated= @posts[0].created_at.xmlschema
  %icon= image_path('favicon.png')
  %author
    %name= feed[:name]
    %email= feed[:email]
    %uri= feed[:url]
  %link{:rel => 'self', :href => posts_path + '.atom'}/
  %link{:rel => 'alternate', :type => 'text/html', :href => 'posts'}/
  - for post in @posts
    %entry
      %id= post.uid
      %title= h post.title
      %updated= post.updated_at.xmlschema
      %published= post.created_at.xmlschema
      %author
        %name= feed[:name]
        %email= feed[:email]
        %uri= feed[:url]
      - for tag in post.tags
        %category{:term => tag.name, :label => tag.name.titleize}/
      %content{:type => 'xhtml'}
        #content{:xmlns => "http://www.w3.org/1999/xhtml"}
          = stylesheet_link_tag 'main'
          = stylesheet_link_tag 'coderay'
          = post_content post
      %link{:rel => 'alternate', :href => post_path(post)}/