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rails 3 x
Notifications in Rails 3
Rails 3 comes with instrument support through the ActiveSupport::Notifications class. Call "subscribe" to listen to notifications, and "instrument" to send them.
(10 minutes)
Action Mailer in Rails 3
Action Mailer has been rewritten for Rails 3 providing a much cleaner API with its use of the Mail gem.
(12 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)
Generators in Rails 3
Generators in Rails 3 have been completely rewritten to be more modular. This allows you to customize any generator to fit your specific preferences.
(11 minutes)
Routing Walkthrough Part 1
How does routing work internally in Rails 3? In this episode I'll walk you through the Rails code that makes routing possible.
(13 minutes)
Turbolinks
Turbolinks can make your Rails app feel faster by using JavaScript to replace the page content when clicking a link. It will be default in new Rails 4.0 applications, but here I show how to use it in Rails 3 and mention some of the gotchas.
(7 minutes)
Controllers in Rails 3
Embedded flash notices, permanent cookies, and the details of respond_with are in this episode.
(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)
Rails 3 Beta and RVM
Get started with Rails 3.0 Beta and install Ruby 1.9.1 using RVM: Ruby Version Manager. Stay tuned to the end for a challenge on giving back to open source.
(8 minutes)