Ruby Rails is a framework for the new generation of web; it allows in a few minutes to create complex and flexible applications.
The most typical example is the creation of a wiki in less than 20 minutes (there is also a video on the web).
This book brings together everything you need to know about Rails, with a little reminder on Ruby and methods MVC (model-view-controller).
It also included a dictionary of "helpers" these Ruby methods that save us an incredible time during programming.
With Rails, you can forget PHP, JSP and others with their access to libraries database, to CGI, etc ... Everything is simplified and flexible in Rails!
The only downside is that this book is in English. Nevertheless, it is a simple English and at that price, we forgive him everything!