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 like accepted answer but for some reason the compiler would not recognize the authService reference. I got around this pretty easily by just sending the service in the method signature, a la...

class Authentication @Inject()(authenticationService: AuthenticationService) extends Controller with ActionBuilders {

  def testAuth = AuthenticatedAction(authenticationService).async { implicit request =>
    Future.successful(Ok("Authenticated!"))
  }

}