I am trying to serialize / deserialize using JSON and the Play Framework 2.1.0 and Scala 2.10. I am using Anorm, and I have a pretty simple Object that I want to store in a database. The Order is very simple:
case class Order(id: Pk[Long] = NotAssigned, mfg: String, tp: String)
In my controller, I am trying to build a REST interface to be able to accept and send an Order instance (above) as JSON. In there, I have the following code:
implicit object PkFormat extends Format[Pk[Long]] {
def reads(json: JsValue):Pk[Long] = Id(json.as[Long])
def writes(id: Pk[Long]):JsNumber = JsNumber(id.get)
}
However, this is failing to compile when I run "play test" with the following:
overriding method reads in trait Reads of type (json: play.api.libs.json.JsValue)play.api.libs.json.JsResult[anorm.Pk[Long]]; [error] method reads has incompatible type [error] def reads(json: JsValue):Pk[Long] = Id(json.as[Long])
Does anyone know why this is happening?
I have a lot of experience with JAXB, but I am realtively new to Play and Scala, and I haven't been able to find any answers so far. This seems like a pretty simple use case, actually I was hoping there would be a simpler solution (like Annotations), but I wasn't able to find one (at least not yet)
Any help is greatly appreciated!
Thanks