Easy XML-Sitemap with Rails

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Out Of Date Warning

This article was published on 16/12/2011, this means the content may be out of date or no longer relevant.
You should verify that the technical information in this article is still up to date before relying upon it for your own purposes.

Rails is too custom, to provide a generic sitemap as a gem for any situation. But it ist not too hard anyway! Here is a frame how to make one:

rails g controller sitemap

add the index action to sitemap-controller:

class SitemapController < ApplicationController
  def index
    respond_to do |f|

add the route (bonus points for restricting the format to xml)

# config/routes
  get "sitemap", :controller => :sitemap, :action => :index

Generate the sitemap with builder:

# app/views/sitemap/index.xml.builder
xml.urlset(:xmlns => "http://www.sitemaps.org/schemas/sitemap/0.9",
           "xmlns:xsi"=> "http://www.w3.org/2001/XMLSchema-instance",
            "xsi:schemaLocation"=>"http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd") do
  # whatever logic your app has, e.g. static pages:
  @pages.each do |page|
    xml.url do
      xml.loc page_url(page)
      xml.lastmod page.updated_at.to_date.to_s(:db)
      xml.changefreq "monthly"
      xml.priority 0.3

Do not forget to add the sitemap to your robots.txt

Sitemap: http://www.mydomain.de/sitemap.xml

Reposted from notes.it-jobs-und-stellen.de