Play 2 Scala interceptors

gistfile1.scala

  override def onRouteRequest(request: RequestHeader): Option[Handler] = {
    super.onRouteRequest(request).map {
      case action: Action[body] => Action[body](action.parser) { (request: Request[body]) =>
        println("Before!")
        val result = action.apply(request)
        result match {
          case AsyncResult(resultPromise) => resultPromise.onRedeem { _ =>
            println("After!")
          }
          case otherResult => {
            println("After!")
          }
        }
        result
      }
      case other => other
    }
  }

We should also deal with other Handler subclasses.