Enabling UJS in Rails3 with jQuery: in just 3 steps!

Here is my approach to quickly enabling Unobtrusive Javascript support for your Rails application, using jQuery:

1. Create a Rails application without Prototype support
   

   $ rails new myCommentsApp --skip-prototype

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2. Edit your config/application.rb to include the latest jQuery and the Rails UJS adapter for jQuery:
   

   config.action_view.javascript_expansions[:defaults] = %w(http://ajax.googleapis.com/ajax/libs/jquery/1.5.2/jquery.min.js rails application)

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   Update (May 4^th) for jQuery 1.6:
   

   config.action_view.javascript_expansions[:defaults] = %w(http://code.jquery.com/jquery-1.6.min.js rails application)

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3. ...oh, I said 3 steps, right!
   Just continue building your application; here's an example: YouTube-like-comments.