migration.scala

case class BatchAndExpiration(batch: String, expiration: Long)

case class ItemInputScarango (
          entidad: String,
          batchAndExpiration: Option[BatchAndExpiration],
          _id: Id[ItemInputScarango] = ItemInputScarango.id()
) extends Document[ItemInputScarango]

object ItemInputScarango extends DocumentModel[ItemInputScarango] {
    override implicit val rw: ReaderWriter[ItemInputScarango] = ccRW
    override val collectionName: String = "tblInputs_details"
    def ref: DocumentRef[ItemInputScarango, ItemInputScarango.type] = DocumentRef(this, Some("i"))
}

//I tried this but didn't work:
object BatchAndExpiration {
    override implicit val rw: ReaderWriter[BatchAndExpiration] = ccRW
}