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ActionController::Live
Server-sent events allow you to trigger events on the browser from a persistent connection to the server. This requires Rails stream data which can be done through ActionController::Live, a feature upcoming in Rails 4.
(14 minutes)
Polling for Changes (revised)
Polling may not be as common today as pushing changes over an open socket, however it is still an effective, simple solution if you do not need instantaneous updates.
(10 minutes)
What's New in Rails 4
Rails 4.0 is still unfinished, but it is shaping up to become a great release. Here I show how to setup a new Rails 4.0 (edge) application and walk through many of its new features.
(20 minutes)
Autocomplete Search Terms
Learn how to add autocompletion to a search form and improve performance using Rack middleware, caching and switching from SQL to Redis.
(17 minutes)
Service Objects
Models can quickly become a grab-bag of unrelated methods if behavior is constantly being pushed from the controller. Here I show how to refactor this using Concerns and Service Objects.
(12 minutes)
Model Name in URL (revised)
A model's ID in the URL is not very helpful to the user. Consider adding the name which can also improve SEO. Learn how to override to_param, add a slug attribute, and make a catch all route for deep nesting.
(9 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)
Importing CSV and Excel
Allow users to import records into the database by uploading a CSV or Excel document. Here I show how to use Roo to parse these files and present a solution for validations.
(10 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)
Tree-Based Navigation (revised)
If your Rails app is content-heavy, consider organizing it in a tree menu structure. Here I show how to add top-level tabs, nested links in a side bar, and breadcrumbs to go up the hierarchy.
(10 minutes)