Crafting rails 4 applications : expert practices for everyday rails development Get ready to see Rails as youve never seen it before. Learn how to extend the framework change its behavior and replace whole components to bend it to your will. Eight different test driven tutorials will help you understand Rails inner workings and prepare you to tackle complicated projects. This second edition has been updated to Rails 4 and discusses new topics such as streaming mountable engines and thread safety Creating our own renderer Building models with active models Retrieving view templates from custom stores Sending multipart emails using template handlers Streaming server events to clients asynchronously Writing DRY controllers with responders Managing application events with mountable engines Translating applications using key value back ends