I'm using spray-json to marshal lists of custom objects into JSON. I have the following case class and its JsonProtocol.
case class ElementResponse(name: String, symbol: String, code: String, pkwiu: String, remarks: String, priceNetto: BigDecimal, priceBrutto: BigDecimal, vat: Int, minInStock:Int, maxInStock: Int)
object JollyJsonProtocol extends DefaultJsonProtocol with SprayJsonSupport {
implicit val elementFormat = jsonFormat10(ElementResponse)
}
When I try to put in in a route like this one:
get {
complete {
List(new ElementResponse(...), new ElementResponse(...))
}
}
I get an error saying that:
could not find implicit value for evidence parameter of type spray.httpx.marshalling.Marshaller[List[pl.ftang.scala.polka.rest.ElementResponse]]
Perhaps you know what is the problem?
I'm using Scala 2.10.1 with spray 1.1-M7 and spray-json 1.2.5
This is an old issue, but I feel like giving my 2c. Was looking at similar issues today.
Marcin, it seems your issue was not actually solved (as far as I can read) - why did you accept one answer?
Did you try adding import spray.json.DefaultJsonProtocol._
in places? Those are in charge of making things such as Seq
s, Map
s, Option
s and Tuple
s to work. I would assume this might be the cause of your problem, since it's the List
that is not getting converted.