Learn some advanced techniques regarding named scopes and get an introduction to Arel in this episode.
A/B Testing (or Split Testing) is a way to experiment with variations in an application to see the most effective option.
If dates play an important role in your application, consider adding a date picker or calendar view as shown in this episode.
Learn how to refactor a set of conditional Active Record queries using a Dynamic Delegator.
Rails 3 offers several new additions to validations. Here learn how to make a custom error_messages partial, reflect on validations, and clean up complex validations in a model.
Blocks in ERB templates are handled differently in Rails 3.0 Beta 2. Learn all about it in this episode.
Here I show several of my favorite web applications which I found most helpful as a Ruby developer over the past year.
MongoDB is a document based database engine. Learn how to access it through MongoMapper in this episode.
Screen scraping is easy with Nokogiri and SelectorGadget.
Learn how to set up a one-to-many or many-to-many association which is entirely embedded into a single column through a string or bitmask.