Latest Screencasts (page 9)

With the release of OmniAuth 1.0 there is a new Identity strategy which allows users to register/login with a password if they don't want to use an external provider.

In order to get someone a timeline in JotRod, we need followers and following lists to compile the Jots from. This means that we need to add a new ColumnFamily called Followers and another one called Following. We don’t have the joins capability from relational databases to do this for us. I’m going to hijack [...]

Allow users to interactively crop uploaded images using Jcrop and Carrierwave. Includes a live preview that shows the resulting image.

Are you staring a pile of JavaScript, wondering why anyone would use that pesky "var" keyword? Or perhaps your looking at a series of nested functions that seem to share variables, but you can't figure out how. And why is that function wrapped in parenthesis, with a bunch of vars in it?

In this second part on making a gem, you will learn how to publish a gem by releasing it to rubygems.org, testing it through Travis CI, documenting it on RubyDoc.info, and advertising it on various sites.

Edit an attribute in-place without leaving a page using the Best In Place gem. Learn how to add validations and support for various field types.

Do you need to dynamically change one select menu based on the value of another? Here I show how to filter states/provinces by a selected country using grouped options and a dab of CoffeeScript.

by Geoffrey Grosenbach. Graphics by Paula Lavalle. Music by Giles Bowkett. Previously: Backbone Part I Backbone Part II Backbone.js is a capable framework for building client-side applications. But even with method-by-method documentation, the details of how to actually build full-featured, useful applications can be elusive.

In this episode I show how to extract a Ruby Gem from an existing Rails application, test it with RSpec and Supermodel, and add a Railtie.

GitHub makes it easier than ever to contribute to open source with pull requests. Here I show how to submit a pull request to the VCR project.