Learn how to get multiple file uploads working smoothly with Paperclip & Rails.
Shoulda is a framework that sits on top of Test::Unit and adds a ton of nice features like macro's, nested context, and the ability to create custom tests in a block-based DSL.
Here I talk about three popular choices for syntax highlighting in Rails: CodeRay, Ultraviolet and Pygments.
A talk I gave at SD Ruby.
Slides: http://slideshare.net/jarinudom/deploying-rails-applications-with-moonshine
SD Ruby: http://sdruby.com
An upload progress bar is one of the best ways to improve the usability of file uploads in your application. This screencast will show how to create a file upload progress bar using Rails, Passenger, Low Pro and the upload progress bar apache module.
The author (Marshall T. Vandegrift) says "It's apparently essential for screencasts, but I decided to have a go at it anyway and made a screencast version of the Emacs demo I gave at the last ATLRUG meeting." Dates from Sept 8th, 2006. http://platypope.org/blog/2006/9/8/i-need-a-cool-european-accent
Change the look and behavior of a Rails app on mobile devices. Also use jQTouch to build a native-looking interface.
In this video we show how to go from development to a deployed application in matter of minutes with the help of the beta version of the Webbynode gem.
Use checkboxes to edit multiple records in one form, where each one has an individual set of form fields.
Add and remove nested model fields dynamically through JavaScript using either Prototype or jQuery.