Implementing Akka in Play Framework 2.4 for Scala - scala

Question

I am trying to replicate the basic example proposed in the Integrating with Akka, Play 2.4 for Scala doc. But I have difficulties in placing the final pieces together...
I have defined the actor (see paragraph Writing actors) at app/actors/HelloActor.scala with the following code:
package actors
import akka.actor._
object HelloActor {
def props = Props[HelloActor]
case class SayHello(name: String)
}
class HelloActor extends Actor {
import HelloActor._
def receive = {
case SayHello(name: String) =>
sender() ! "Hello, " + name
}
}
Then (see Creating and using actors) I suppose I should create a controller at app/controllers/Hello.scala with something like:
package controllers
import play.api.mvc._
import akka.actor._
import javax.inject._
import actors.HelloActor
#Singleton
class Hello #Inject() (system: ActorSystem) extends Controller {
val helloActor = system.actorOf(HelloActor.props, "hello-actor")
...
}
The question: where and how I utilize the code in the following paragraph Asking things of actors to have a working solution? I have tried to add it to the above Hello.scala controller but without success.
import play.api.libs.concurrent.Execution.Implicits.defaultContext
import scala.concurrent.duration._
import akka.pattern.ask
implicit val timeout = 5.seconds
def sayHello(name: String) = Action.async {
(helloActor ? SayHello(name)).mapTo[String].map { message =>
Ok(message)
}
}

Answer 1

Found the solution, I had some problems with defining the implicit timeout, this is the working controller:
package controllers
import play.api.mvc._
import akka.actor._
import javax.inject._
import actors.HelloActor
import actors.HelloActor.SayHello
import play.api.libs.concurrent.Execution.Implicits.defaultContext
import scala.concurrent.duration._
import akka.pattern.ask
import akka.util.Timeout
#Singleton
class Hello #Inject() (system: ActorSystem) extends Controller {
val helloActor = system.actorOf(HelloActor.props, "hello-actor")
implicit val timeout: Timeout = 5.seconds
def sayHello(name: String) = Action.async {
(helloActor ? SayHello(name)).mapTo[String].map { message ⇒
Ok(message)
}
}
}
Plus I added the following route in app/conf/routes:
# Actor test
GET /hello/:name controllers.Hello.sayHello(name)