Sitemap.xml for a Rails App for Google Webmasters Tools

index.xml.builder

# app/views/sitemap/index.xml.builder
xml.instruct!
xml.urlset "xmlns" => "http://www.sitemaps.org/schemas/sitemap/0.9" do

  xml.url do
    xml.loc root_url
    xml.priority 1.0
  end

  xml.url do
    xml.loc categories_url
    xml.priority 0.9
  end

  xml.url do
    xml.loc about_url
    xml.priority 0.9
  end

  xml.url do
    xml.loc blog_url
    xml.priority 0.9
  end

  xml.url do
    xml.loc faqs_url
    xml.priority 0.9
  end

  xml.url do
    xml.loc contacts_url
    xml.priority 0.7
  end

  xml.url do
    xml.loc newsletter_url
    xml.priority 0.7
  end

  xml.url do
    xml.loc privacy_policy_url
    xml.priority 0.7
  end

  @categories.each do |category|
    xml.url do
      xml.loc category_services_url(category)
      xml.priority 0.8
    end
    xml.url do
      xml.loc normativa_url(category)
      xml.priority 0.7
    end
  end

  @services.each do |service|
    xml.url do
      xml.loc category_service_url(service.category, service)
      xml.priority 0.8
    end
    xml.url do
      xml.loc category_service_buy_url(service.category, service)
      xml.priority 0.7
    end
  end

  @articles.each do |article|
    xml.url do
      xml.loc article_url(article)
      xml.lastmod article.updated_at.to_date
      xml.priority 0.7
    end
  end

  Article::CATEGORIES.each do |category|
    xml.url do
      xml.loc articles_url(:cat => category)
      xml.priority 0.6
    end
  end

  @faqs.each do |faq|
    xml.url do
      xml.loc faqs_url(:faq_id => faq.id, :anchor => "faq#{faq.id}")
      xml.lastmod faq.updated_at.to_date
      xml.priority 0.7
    end
  end

  Faq::CATEGORIES.each do |category|
    xml.url do
      xml.loc faqs_url(:cat => category)
      xml.priority 0.6
    end
  end
end

routes.rb

MyApp::Application.routes.draw do
  # snip...
  get '/sitemap', :to => "sitemap#index", :as => "sitemap"
end

sitemap_controller.rb

class SitemapController < ApplicationController
  def index
    headers['Content-Type'] = 'application/xml'
    @categories = Category.all
    @services = Service.published
    @articles = Article.published
    @faqs = Faq.published
    respond_to do |format|
      format.xml
    end
  end
end

sitemap_spec.rb

require "spec_helper"

describe "SitemapController" do
  it "allows google robots to retrieve the site's map" do
    get sitemap_path(:format => :xml)
    response.should render_template(:index, :format => :xml)
    response.body.should include(root_url)
    response.body.should include(contacts_url)
    response.headers["Content-Type"].should eq("application/xml")
  end
end