Setting up MongoDB, MongoMapper, GridFS, Devise & Carrierwave on OSX@matsimitsu Sorry, this article is a bit outdated. Lucky for you, @antekpiechnik wrote a really nice guide in which he uses Mongoid and Rails 3. Be sure to check that out too! For a little side project I wanted to experiment with MongoDB and GridFS on Rails 2.3.5, but it took me a while to get everything up and running. It wasn’t