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Image Manipulation
Learn how to do extensive image manipulation with the ImageMagick commands. Also learn how RMagick can be used in combination with CarrierWave to process uploaded images.
(11 minutes)
Private Pub
Private Pub makes it easier than ever to publish and subscribe to real-time events in a Rails app. You can use publish_to with a block of JavaScript or supply a hash for use with JSON.
(7 minutes)
Dangers of Session Hijacking
If a user's authentication cookie is sent over an insecure connection it is vulnerable to session hijacking, or more specifically, sidejacking. Learn how this is done, and how you can prevent it.
(6 minutes)
make_resourceful
The make_resourceful plugin is a great way to DRY up the 7 RESTful actions common in most controllers. Learn how to use it in this episode.
(6 minutes)
Bullet
Bullet will notify you of database queries that can potentially be improved through eager loading or counter cache column. A variety of notification alerts are supported.
(6 minutes)
Wizard Forms with Wicked
Creating a wizard form can be tricky in Rails. Learn how Wicked can help by turning a controller into a series of multiple steps.
(11 minutes)
Brakeman
The Brakeman gem will scan the Ruby code of a Rails application and alert you to common security vulnerabilities.
(8 minutes)
Active Admin
Active Admin allows you to quickly build an admin interface with just a few commands. Not only does it look great, but it is very customizable as shown in this episode.
(12 minutes)
Securing an API
There are many approaches to locking down an API. Here I start off with HTTP Basic authentication then move on to generating a unique token which can be passed through a URL parameter or HTTP header.
(7 minutes)
Squeel
Squeel provides a comprehensive DSL for writing SQL queries in Ruby. It is built upon Arel giving you access to many of its powerful features.
(9 minutes)