Example Play! Scala app with Cake Pattern

I was looking at these tutorials:

• http://playlatam.wordpress.com/tag/cake-pattern/
• http://www.cakesolutions.net/teamblogs/2011/12/19/cake-pattern-in-depth/
• http://jonasboner.com/2008/10/06/real-world-scala-dependency-injection-di/

... and got curious enough to implement it myself in the latest release version of Play! Scala to date (2.2.0-M2). It makes use of some 2.2 additions like Action.async, database evolutions including generating data, has tests on different layers of the cake pattern in order to look at how dependency injection might be used, actually uses a real entity with implicit json read/writes (all the examples I found lacked the actual definition of the entity they were passing around) and lastly I configured the app to run an H2 in memory database with MySQL compatibility, so if you want to check this out and run it on something else that should be easy enough.

How this is organized

/app
  /controllers
    /auth
      Signup           - validates Signup form data
      Login            - validates Login form data
      Logout           - removes any cookies
    Landing            - renders HTML for landing route
  /entities
    User               - the only entity in the entire app, has
                         implicit JSON serialization and Anorm SQL
                         Result mapping
  /repositories
    Users              - traits and classes for handling data layer
                         for Users, implementation of Anorm
  /services
    Auth               - traits and classes for handling authentication
                         for Users
/conf                  - some configs
/project
  Build.scala          - note that while Play 2.x bundles specs2
                         and mockito for testing it does not do so for
                         simply running the app
/test
  /repositories
    UsersSpec          - bit redundant to write tests on this with
                         a FakeApplication since the routes spec covers
                         the same code, was just being thorough :)
  /routes
    LandingSpec        - just being thorough, covers the only HTML
                         route
    SignupSpec         - covers the JSON Users API with FakeApplication
                         instances
  /services
    AuthSpec           - unit tests the Auth by using partial mocking
                         with Mockito
  package.scala        - helper method for FakeApplication config

Now a Typesafe Activator Template!