Sitemap template and associated helpers for Middleman.

sitemap.xml.erb

<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
<% sitemap_resources.each do |r| %>
  <url>
    <loc><%= sitemap_path(r) %></loc>
    <priority><%= sitemap_priority(r) %></priority>
  </url>
<% end %>
</urlset>

sitemap_helpers.rb

# ./helpers/sitemap_helpers.rb
module SitemapHelpers
  def canonical_domain
    development? ? "localhost:4567" : "someurl.com"
  end
  
  def sitemap_path(r)
    "http://#{canonical_domain}/#{r.destination_path}"
  end

  def sitemap_resources
    sitemap.resources
      .reject { |r| r.destination_path.include?("sitemap.xml") }
      .reject { |r| r.destination_path.end_with?(".css") }
      .reject { |r| r.destination_path.end_with?(".png") }
      .reject { |r| r.destination_path.end_with?(".js") }
      .reject { |r| r.destination_path.end_with?("robots.txt") }
  end

  def sitemap_priority(resource)
    if resource.data.sitemap && resource.data.sitemap.priority
      resource.data.sitemap.priority
    else
      "0.7"
    end
  end
end