Ruby on Rails Screencasts

Episode #223 – Sep 15, 2012 – 116 comments

Charts & Graphs (revised)

If you have a lot of data, consider adding a graph to provide an overview of it. Here I show how to use Morris.js to chart an Order model and visualize trends in the data. (12 minutes)

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Episode #235 – Jul 13, 2012 – 134 comments

In this episode I build upon a standard Devise setup and show how to add 3rd party authentication using OmniAuth. This includes support for user validations and is compatible with normal password authentication. (10 minutes)

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Episode #324 – Feb 13, 2012 – 77 comments

Passing Data to JavaScript

There are a variety of ways to pass variables from a Rails application to JavaScript. Here I show three techniques: a script tag, a data attribute, and the Gon gem. (6 minutes)

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Episode #313 – Jan 02, 2012 – 89 comments

Receiving Email with Mailman

The Mailman gem makes it easy to receive email in a Rails application. Here I show how to write a script to run Mailman in its own process and pull down mail from a POP3 account. (11 minutes)

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Episode #394 – Nov 25, 2012 – 81 comments

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)

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Episode #227 – Aug 16, 2010 – 34 comments

Upgrading to Rails 3 Part 3

Here we finish up this upgrade series by removing all deprecation warnings and fixing some problems in the view. (9 minutes)

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Episode #153 – Nov 03, 2011 – 82 comments

PDFs with Prawn (revised)

Prawn is an excellent Ruby library for generating PDF documents. Here you will learn how to add it to a Rails application through a separate PDF renderer class. (11 minutes)

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