This book aims to give a practical guide to developing and scaling a Ruby Rails application with a focus on mobile devices and the issues with using a Single Page Application (SPA). Websites are getting more and more traffic from mobiles devices that it has become important to prioritise development to mobilise your web page, even for sites which also have native apps. We will cover enough Ruby Rails to get started and some advanced topics to give you an overview of the language capabilities. It is a practical guide but some wider concepts will be discussed so you have a view of issues when...