#219 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.
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Form Objects
Models have a tendency to become a complex mess as an application grows. In this episode you will learn a couple of techniques to extract form-behavior out into its own class.
(18 minutes)
Model Caching (revised)
Caching at a low level is a great option when the view is too dynamic to cache and you need something flexible that can work anywhere in the application. Here I show a variety of ways to use Rails.cache with Active Record.
(12 minutes)
Fast Tests
A slow test suite can put a damper on test-driven development. In this episode I show a variety of ways to optimize specs including: selective testing, preloading Rails, and testing outside of Rails.
(17 minutes)
Fast Rails Commands
Rails commands, such as generators, migrations, and tests, have a tendency to be slow because they need to load the Rails app each time. Here I show three tools to make this faster: Zeus, Spring, and Commands.
(8 minutes)
Ember Part 2
Here we continue our look into Ember.js. First we add a JSON API to persist the entries through ember-data. Then we finish up the project by adding a computed property and a view object.
(14 minutes)
