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Validations in Rails 3
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.
(9 minutes)
ActiveRecord::Relation Walkthrough
The new Active Record query methods in Rails 3 might seem like magic at first. But in this episode I unravel how it works by browsing the Rails 3 source code.
(11 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)
Advanced Queries in Rails 3
Learn some advanced techniques regarding named scopes and get an introduction to Arel in this episode.
(9 minutes)
Hacking with Arel
Here I show a variety of ways to rewrite a long SQL query using only Active Record and Arel. This includes generating scopes dynamically, adding an "or" operator, and adding a powerful "match" method.
(15 minutes)
Globalize3
Rails has great internationalization (I18n) support making it easy to translate static text into other languages, but how do we translate database content? Learn how using Globalize 3 in this episode.
(5 minutes)
Nested Model Form Part 1
Handling multiple models in a single form is much easier with the accepts_nested_attributes_for method. See how to use this method to handle nested model fields.
(11 minutes)
7 Security Tips
Security is important! Here I show seven different security flaws which are common to Rails applications ranging from mass assignment to CSRF protection.
(14 minutes)
Rails 2.2 Extras
This episode finishes up the Rails 2.2 series by showing a few miscellaneous additions that I find useful.
(4 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)