Using the Javascript Library, Signature Pad, learn how to capture user signatures and store them within your Ruby on Rails application.

Using ClamAV, scan files uploaded to your application for viruses. In the event of a virus learn how to gracefully handle the infected file and notify the user.

Learn how to incorporate FullCalendar into your Ruby on Rails application with listing and creating events. Using unobtrusive javascript, we can create a fast interactive calendar.

Learn how avoid duplicate code to reuse existing javascript.

Puma-dev is the emotional successor to pow. It provides a quick and easy way to manage apps in development on OS X; supporting web sockets and ssl.