Overwrite value of Play JSON Combinator Writes

Question

Suppose I have a json writes like this

  implicit val userWrites: Writes[User] = (
    (__ \ "name").write[String] ~
      (__ \ "email").write[String] ~
      (__ \ "encryptedPassword").write[String] ~
      (__ \ "id").writeNullable[Long]
    )(unlift(User.unapply))

If I don't want to printout the password, and instead just print a string "hidden", how can I achieve this with combinator?

I am looking for a solution that looks similar to this

  implicit val userWrites: Writes[User] = (
    (__ \ "name").write[String] ~
      (__ \ "email").write[String] ~
      (__ \ "encryptedPassword").write[String](Writes.pure("hidden")) ~
      (__ \ "id").writeNullable[Long]
    )(unlift(User.unapply))

Answer 1

This should work:

implicit val userWrites: Writes[User] = (
    (__ \ "name").write[String] ~
      (__ \ "email").write[String] ~
      (__ \ "encryptedPassword").write[String](Writes((_: String) => JsString("hidden"))) ~
      (__ \ "id").writeNullable[Long]
    )(unlift(User.unapply))