Play Framework: Dependency Inject Action Builder

Question

since Play Framework 2.4 there is the possibility to use dependency injection (with Guice).

Before I used objects (for example AuthenticationService) in

Answer 1

I didn't like the way one was required to inherit in the above example. But apparently it's possible to simply wrap a object inside class:

class Authentication @Inject()(authService: AuthenticationService) {
  object AuthenticatedAction extends ActionBuilder[Request] {
    def invokeBlock[A](request: Request[A], block: (Request[A]) => Future[Result]) = {
      // Do your thing wit the authService...
      block(request)
    }
  }
}

class YourController @Inject() (val auth: Authentication) extends Controller (
  def loggedInUser = auth.AuthenticatedAction(parse.json) { implicit request =>
    // ...
  }
}