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STI and Polymorphic Associations
Single Table Inheritance (STI) can help organize branching logic into separate classes, but a polymorphic association may be a better fit if there are unique database columns.
(14 minutes)
Action View Walkthrough
Find out exactly what Rails is doing under the hood when it renders a view template for a response. What object context handles the template? How does the lookup process work? That and more covered in this code walkthrough.
(15 minutes)
Action Controller Walkthrough
Do you ever wonder what goes on behind the scenes when a Rails controller handles a request? What do the "render" and "redirect_to" methods do exactly? This and more covered as we walk through the code of ActionController::Base.
(11 minutes)
Testing JavaScript with PhantomJS
PhantomJS allows us to test JavaScript without going through a browser window. Here I show how to do this using Capybara and Poltergeist. I also give some tips on handling database transactions and skipping javascript tests.
(10 minutes)
Authorization from Scratch Part 1
Authorization can be difficult to implement and test because it often involves complex logic that exists throughout the entire app. Here I demonstrate how to test and implement authorization from scratch.
(15 minutes)
Capistrano Recipes
Get the most out of Capistrano by writing specific recipes with ERB templates. Here I show how to deploy to a blank VPS by running just a few Capistrano commands.
(13 minutes)
Full-Text Search in PostgreSQL
Postgres offers full-text searching right out of the box. This episode shows how to write queries from scratch, apply tools like Texticle and pg_search, and optimize performance through indexes.
(16 minutes)
Memcached & Dalli
Memcached is an excellent cache store, and Dalli is the best way to interact with it through Ruby. Here I show various ways to use Memcached in a Rails app including how to set it up in production.
(12 minutes)
OAuth with Doorkeeper
Doorkeeper makes it easy to create an OAuth 2 provider. This episode also shows how to setup OmniAuth as an OAuth client and use the oauth2 gem to communicate with an API.
(19 minutes)
A Look at Meteor
Meteor is a JavaScript framework for building rich client-side applications. Here I re-create the Raffler app to compare with Backbone.js and Rails. Meteor may not be related to Rails, but I think many will find it interesting.
(15 minutes)