Flexible Rails is a unique, application-based guide for using Ruby on Rails and Adobe Flex to build rich Internet applications (RIAs). It is not an exhaustive Ruby on Rails or a Flex reference. Instead, it is an extensive tutorial in which the reader builds multiple iterations of an interesting RIA using Flex and Rails together. Author Peter Armstrong walks readers through over a dozen iterations in which the sample application - pomodo - is variously built, refactored, debugged, sliced, diced, and otherwise explored from every conceivable angle with respect to Ruby on Rails and Adobe Flex. The book unfolds both the application and the Flex-on-Rails approach side-by-side.