title: Rails website documentation for an older version
body: <p>Rails has beautiful documentation on their guides and their website: <a href="http://guides.rubyonrails.org/association_basics.html">http://guides.rubyonrails.org/association_basics.html</a></p>
  
  <p>I am taking on an application that uses Rails 2.2.2 but the documentation on the rails site is for the latest version.  How could I find the 2.2.2 documentation?</p>
  
  <p>In other words check out how Django does it: <a href="https://docs.djangoproject.com/en/dev//">https://docs.djangoproject.com/en/dev//</a>  You can click which version it is and the documentation will adjust accordingly?</p>
  
  <p>I do see that RailsBrain.com has an previous release docs, but they only display the API and I am looking for the nice site(ie. how current release site looks but for 2.2.2)</p>
  
  <p>Thanks.</p>