pushka_nuance.scala

import pushka.json._
import pushka.annotation._

// First case.
// Simple as is.
@pushka
case class A(subModel: B, i: Int, str: String)

@pushka
case class B(field1: Int, field2: List[Int])

val jsonStr1 =
  """{
    |"subModel": {"field1": 10, "field2": [2,3,4,5,6,6,7]},
    |"i": 5,
    |"str": "some string value"
    |}""".stripMargin

val result1 = read[A](jsonStr1)

// Second case.
// You should rename 'subModel' field in json when you are working with sealed trait. =(
@pushka
case class C(subModel: D, i: Int, str: String)

@pushka
sealed trait D

object D {

  case class D1(field1: Int, field2: List[Int]) extends D

}

val jsonStr2 =
  """{
    |"d1": {"field1": 10, "field2": [2,3,4,5,6,6,7]},
    |"i": 5,
    |"str": "some string value"
    |}""".stripMargin

val result2 = read[D](jsonStr2)