Drink#69: Your Ruby on Rails Juice

From Pandiyan's photostream. 

1. Ruby 1.9.2 is released: See what's new and deprecated.
2. Use STI and polymorphic model for multiple uploads: Nice solution to upload multiple attachments using paperclip for a single model.
3. Skinny Daemons: Package your daemon tasks into gems and deploy easily to multiple servers.
4. Misunderstanding the Law of Demeter: A ruby example that clarifies why the Law of Demeter, as Dan puts it, should be applied for behaviors instead of attributes.