Generate JSON for a Phone case class as well as a Tuple. The Tuple contains a Sequence of our case class, as well as a count of the number of rows.

gistfile1.scala

  implicit val phoneReads = Json.reads[Phone]
  implicit val phoneWrites = Json.writes[Phone]

  implicit val pageWrites = (
    (__ \ 'rows).write[Seq[Phone]] and
      (__ \ 'count).write[Int]
    ).tupled : Writes[(Seq[Phone], Int)]