Ruby on Rails is rapidly taking the lead among the most popular web application development platforms. It is based on one of the most elegant programming languages, Ruby, and gives true pleasure to its adherents. Want to be in the front row? Then this book is for you! Its author, Obi Fernandez, and a whole group of experts detail the main features and subsystems of Rails: controllers, routing, REST style support, object-relational mapping using the ActiveRecord library, the use of AJAX technology in Rails applications, and much more.