Play! Scala code demonstrating folding left on a model that is using imperative JSON to create a JavaScript array

PlayScalaJsArray.scala

import java.util.Date

import play.api.libs.json._

case class Event(name:String,when:Date) extends JsSerializable

object Event extends ((String,Date) => Event) {
  implicit val r = Json.reads[Event]()
  implicit val w = Json.writes[Event]()
}

def foldJsList(list:List[JsSerializable]) = {
  var jsList = list.foldLeft(JsArray()) {
    (arr,model) => arr :+ Json.toJson(model)
  }
}

foldJsList(models.Event.getCurrent)