This post explores where to access request headers by looking at the Rails source code after unexpectedly accessing the response headers.| Kevin Murphy
Cherry-picking specific extensions/behavior from Active Support.| stevenharman.net
Active Record BasicsThis guide is an introduction to Active Record.After reading this guide, you will know: How Active Record fits into the Model-View-Controller (MVC) paradigm. What Object Relational Mapping and Active Record patterns are and how they are used in Rails. How to use Active Record models to manipulate data stored in a relational database. Active Record schema naming conventions. The concepts of database migrations, validations, callbacks, and associations.| Ruby on Rails Guides