It can be difficult to test code that deals with the current time or an external web request. Here I show you how to do both using the Timecop and FakeWeb gems.

Here I show how I would add tests to the password reset feature created in the previous episode. I use RSpec, Capybara, Factory Girl, and Guard to make request, model, and mailer specs.

It is easy to create authentication from scratch, but how do we extend it with more features? Here I add a "remember me" check box and a "forgotten password" link.

If you need to work with geographic data, Geocoder is an excellent gem for converting addresses and coordinates, finding nearby locations, determining distances, and more!

Redcarpet is an easy-to-use gem which interprets Markdown. Here I show how to customize it and add syntax highlighting through Pygments and Albino.

Resque creates background jobs using Redis. It supports multiple queue and comes with an administration interface for monitoring and managing the queues.

Here I show off three new features in Rails 3.1 that will help with authentication: easier HTTP Basic, SecurePassword in the database, and forcing SSL.

In Rails 3.1 the controller inheritance also applies to the view layer. Here I show how to add an application template which is shared by all views, and a lookup path for overriding templates based on the subdomain.

Sass extends CSS with variables, nesting, mixins and more. Here I show how to convert plain CSS to SCSS in a Rails 3.1 app.

CoffeeScript allows you to write JavaScript in a concise, elegant fashion. Here I convert JavaScript code to CoffeeScript in a Rails 3.1 app.