Play Framework Scala format large JSON (No unapply or unapplySeq function found)

Question

I need to receive a big JSON on my server (more than 22 fields). I have a case class with a lot of fields:

case class Filters(objectType: Option[String] = No         


        

Answer 1

I did it this way:

case class Filters(part1: Part1, part2: Part2, ...)

case class Part1(
    field1: Field1,
    field2: Field2,
    ...
    field10: Field10,
)

object Part1 {
    implicit val part1Format = Json.format[Part1]
}

...

object Filters {
    implicit val filtersReads = (
        JsPath.read[Part1] and
        JsPath.read[Part2] and
        ...
    )(Filters.apply _)

    implicit val filtersWrites = (
        JsPath.write[Part1] and
        JsPath.write[Part2] and
        ...
    )(unlift(Filters.unapply))
}