View: 
Categories
- Active Record
- Active Resource
- Active Support
- Administration
- Ajax
- APIs
- Authentication
- Authorization
- Background Jobs
- Caching
- Code Walkthrough
- Controllers
- Debugging
- Deployment
- eCommerce
- Forms
- Mailing
- Models
- Performance
- Plugins
- Production
- Rack
- Rails 2.0
- Rails 2.1
- Rails 2.2
- Rails 2.3
- Rails 3.0
- Rails 3.1
- Rails 3.2
- Rails 4.0
- Refactoring
- Routing
- Search
- Security
- Testing
- Tools
- Views
Subdomains in Rails 3
It is now possible to add subdomains to Rails 3 without the use of additional plugins. Learn how in this episode.
(13 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)
Customizing Devise
Here we dive deeper into Devise by customizing how the views, routing, validations, and authentication works.
(7 minutes)
Routing Walkthrough Part 2
In this episode we continue our look into the Rails 3 router by exploring the Mapper class.
(13 minutes)
Upgrading to Rails 3 Part 1
In the first part of this series on upgrading a Rails 2 application to Rails 3, we'll start off by setting up Rails 3.0 Release Candidate in a clean environment. The rails_upgrade plugin will then help us determine what needs upgrading.
(11 minutes)
Controllers in Rails 3
Embedded flash notices, permanent cookies, and the details of respond_with are in this episode.
(10 minutes)
Unobtrusive Javascript
Keep JavaScript out of your HTML content with unobtrusive JavaScript. Here I show how Rails 3 works with this best practice.
(13 minutes)
Active Model
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.
(6 minutes)
Upgrading to Rails 3 Part 3
Here we finish up this upgrade series by removing all deprecation warnings and fixing some problems in the view.
(9 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)