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Sortable Lists
Creating drag & drop sortable lists is fairly easy using Prototype and the built in helper methods. See how in this episode.
(8 minutes)
Memoization
Rails 2.2 is out! In this episode I show how to upgrade Rails and then demonstrate one of the new additions: Memoization.
(5 minutes)
Making a Gem
Want to create a Ruby Gem instead of a Rails plugin? In this episode I will walk you through creating a gem to extend Rails.
(9 minutes)
Semi-Static Pages
Static pages can sometimes be a little awkward to add to a Rails app. See a couple different solutions to this problem in this episode.
(14 minutes)
Anonymous Scopes
The scoped method allows you to generate named scopes on the fly. In this episode I show how to use anonymous scopes to improve the conditional logic which was used in the previous episode on advanced search form.
(8 minutes)
Contributing to Rails with Git
If you want Rails to behave a certain way, try changing it and submitting a patch. This episode will show how to do exactly this using Git.
(11 minutes)
Non Active Record Model
This episode will show you how to make a model which isn't based on Active Record. You may want to do this if a resource isn't backed by the database.
(12 minutes)
named_scope
The named_scope method in Rails 2.1 makes performing finds on models very elegant and convenient. See how in this episode.
(11 minutes)
Tracking Attribute Changes
Rails 2.1 keeps track of the changes you make to a model's attributes. It also allows you to see what the previous value was. But watch out for the gotcha! See this episode for details.
(7 minutes)
Performing Calculations on Models
Did you know ActiveRecord provides class methods for performing calculations on models? You can even use these methods through associations.
(2 minutes)