Learn two different techniques for parsing an RSS feed using Feedzirra in this episode!

Use a virtual attribute to implement a simple tagging feature. In this episode I show you how to assign virtual attributes through a callback instead of a setter method.

Metric Fu is a compilation of several tools to help find areas of code that could be improved. In this episode I show you how to setup this tool on the railscasts.com source code.

Use checkboxes to select multiple records and edit them all in one form as shown in this episode. With virtual attributes you can even edit values relatively!

Cron is great for handling recurring tasks, but it is an external dependency with a crazy syntax. In this episode I show you how to use Whenever to create cron jobs with Ruby.

Creating a social networking site often requires a self-referential association on the User model to define friends/followers. In this episode I show how to do exactly that.

The acts_as_tree plugin provides many methods for handling a tree based association. In this episode I show how to build a navigation system with tabs, subpages, and breadcrumbs.

Ever want to know what Rails is doing under the hood during a request? In this episode I show three different profiling tools: New Relic RPM, FiveRuns TuneUp, and Rack::Bug.

Authentication can get very complex. In this episode I show how Authlogic can handle this complexity while you stay in control of how it is presented to the user.

There is a lot more to Cucumber than I showed in an earlier episode. See how to refactor complex scenarios in this episode.