Latest Screencasts

In Rails 3 the non-database functionality of Active Record is extracted out into Active Model. This allows you to cleanly add validations and other features to tableless models.

Learn some advanced techniques regarding named scopes and get an introduction to Arel in this episode.

Rails 2.3.4 includes a conventional way to add seed data to your application - no more including it in the migration files.

Have you ever wanted to fill up a database with a lot of test data? See how to do that in this episode using the populator and faker gems.

Migrations are now sexy in Rails 2.0! In this episode we will take a look at these improvements and the related rake tasks.

When two people attempt to update the same record near the same time, one of the updates will likely be overwritten. You can solve this problem with optimistic locking.