Rails is built with copious amounts of Ruby meta-magic, and requires even more meta-magic to extend it to do your bidding. The incredible flood of plugins and gems to extend Rails is a tribute to the incredible extensibility of Rails without requiring core patches.

Want to extend Rails? You just do it.

Nic Williams has written many gems and plugins that do just this: Dr Nic's Magic Models, Composite Primary Keys, Magic Model Generator, Magic Wiggly Line, and Map By Method. These extensions might be useful for your own applications, but more importantly, we'll look inside these fun Rails extensions.

Using these fun examples, Williams will take you to Meta-Magic Mastery.