Play Framework: How to serialize/deserialize an enumeration to/from JSON

implicit val genderReads = Reads.enumNameReads(Gender) is working fine for me. Play Scala 2.4.2

Expanding on @surenyonjan's response, the following works nicely with Play Json 2.6:

object MyEnum extends Enumeration {
  type MyEnum = Value
  val e1, e2 = Value

  implicit val myEnumReads = Reads.enumNameReads(MyEnum)
  implicit val myEnumWrites = Writes.enumNameWrites
}

Try changing it to

def reads(json: JsValue) = JsSuccess(MyEnum.withName(json.as[String].value))