Noise free JSON format for sealed traits with Play 2.2 library

Question

I need to get a simple JSON serialization solution with minimum ceremony. So I was quite happy finding this forthcoming Play 2.2 library. This works perfectly with plain cas

Answer 1

Play 2.7

sealed traits are supported in play-json.

object Foo{
  implicit val format = Json.format[Foo]
}

Play 2.6

This can be done now elegantly with play-json-derived-codecs

Just add this:

object Foo{
    implicit val jsonFormat: OFormat[Foo] = derived.oformat[Foo]()
}

See here for the whole example: ScalaFiddle