Sitemap.xml rake task

gistfile1.rb

namespace :sitemap do
  
  desc "Builds the sitemap XML file"
  task :build => :merb_env do
    
    domain = 'jeanmarie.local'
    pages = ['','about','products','contact','sitemap']
    
    Category.all.each do |category|
      pages << "products/#{category.slug}"
    end
    Photo.all.each do |photo|
      pages << "products/#{photo.category.slug}/photos/#{photo.id}"
    end
    
    # Build URLs
    urls = pages.inject([]) { |urls,page| urls << "http://#{domain}/#{page}" }
    
    # Build XML for sitemap
    builder = Nokogiri::XML::Builder.new {
      urlset(:xmlns => 'http://www.sitemaps.org/schemas/sitemap/0.9') {
        urls.each do |uri|
          url {
            loc uri
          }
        end
      }
    }
    
    # Save XML sitemap
    File.open("#{Merb.root}/public/sitemap.xml",'w') do |f|
      f.puts builder.to_xml
    end
    
    puts "Recreated sitemap.xml. #{urls.size} URL(s) saved."
    
  end
  
end