cleanup dissallowed fields

argonaut-efficient-traversal.scala

import argonaut._, Argonaut._

Object example {
  def cleanup(details: Json): Json = details
    .withArray(_.map(cleanup))
    .withObject(jo => JsonObject.from(jo.toList.map(cleanup)))

  def cleanup(field: (JsonField, Json)): (JsonField, Json) = (field._1.toLowerCase, field._1, field._2) match {
    case (pwd, k, _) if List("password", "passwd", "pass", "pwd").contains(pwd) => (k, jString("******"))
    case (_, k, v) => (k, cleanup(v))
  }
}