Scala Future with play framework

Async controller
----------------------------

package beard.controllers

import play.api.mvc._
import play.api.libs.json._
import play.api.libs.functional.syntax._
import play.libs.Json._
import reactivemongo.bson._
import service.BeardService
import play.api.libs.concurrent.Execution.Implicits.defaultContext

import scala.collection.mutable
import scala.collection.mutable.ListBuffer
import scala.concurrent.Future
import scala.util.{Failure, Success, Random}

class AsyncBeardController extends Controller {

 def sayAsyncBeard = Action.async { request =>
    val futureResult = Future {
      intensiveComputation()
    }
    futureResult.map(result =>
      Ok(result)
    )
  }


def intensiveComputation(): JsObject = {
      Thread.sleep(Random.nextInt(5000))
        Json.obj("value" -> "beard")
  }
}

Test
-------

$ curl -XGET http://localhost:9000/sayAsyncBeard
{"value":"beard"}

You will get the response after ~5seconds.