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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)
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)
Advanced Queries in Rails 3
Learn some advanced techniques regarding named scopes and get an introduction to Arel in this episode.
(9 minutes)
Active Record Queries in Rails 3
Rails 3 introduces a new query interface for performing finds in Active Record. See how it works along with the changes in named scopes.
(10 minutes)
Active Record Reputation System
If you need to calculate an average user's rating or sum up a number of votes, consider using the activerecord-reputation-system gem. Here I will cover the basics and also briefly present a from-scratch solution.
(10 minutes)
Searchlogic
Searchlogic makes searching models easier than ever with its assortment of named scopes. In this episode I show you how to create simple and advanced searches.
(13 minutes)
Refactoring & Dynamic Delegator
Learn how to refactor a set of conditional Active Record queries using a Dynamic Delegator.
(7 minutes)
Rails 2.3 Extras
This episode finishes up this series on Rails 2.3. Here you will learn about several smaller additions in 2.3.
(9 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)
Embedded Association
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.
(14 minutes)