This is a tutorial of Play 2.1 framework modified using Casbah - Scala driver of MongoDB
You can see original tutorial in http://localhost:9000@documentation/ScalaTodoList when Play new application (includes itself) is running.
And Casbah - official Scala driver of MongoDB - has a ScalaDoc category: http://mongodb.github.io/casbah/api/#com.mongodb.casbah.package