Ruby on Rails helps you produce high-quality, beautiful-looking web applications quickly—you concentrate on creating the application, and Rails takes care of the details. Rails 5.1 brings many improvements, and this edition is updated to cover the new features and changes in best practices.
Rails 1.0 was released in December 2005. This book was there from the start, and didn’t just evolve alongside Rails, it evolved with Rails. It has been developed in consultation with the Rails core team. In fact, Rails itself is tested against the code in this book.