Functional Format[Person] for Working with JSON in Play 2.1 by Greg Methvin

Functional Format[Person] for Working with JSON in Play 2.1 by Greg Methvin.scala

import play.api.libs.functional.syntax._
implicit val personFormat: Format[Person] = (
  (__ "id").formatNullable[Id[Person]] and
  (
    (__ "firstName").format[String] and 
    (__ "lastName").format[String]
  )(Name.apply, unlift(Name.unapply)) and
  (__ "email").format(Reads.email) and
  (__ "birthDate").format[LocalDate]
)(Person.apply, unlift(Person.unapply))
Json.toJson(Person(
  Some(Id(0)),
  Name("Arthur","Dent"),
  "[email protected]",
  new LocalDate("1952-03-11")
))
/* {
"id":0,
"firstName":"Arthur",
"lastName":"Dent",
"email":"[email protected]",
"birthDate":"1952-03-11"
} */   
Json.fromJson[Person](Json.parse("""{
  "id":0,
  "firstName":"Arthur",
  "lastName":"Dent",
  "email":"[email protected]",
  "birthDate":"1952-03-11"
}"""))
/* => JsSuccess(Person(
Some(Id(0)),
Name(Arthur,Dent),
[email protected],
1952-03-11),) */
Json.fromJson[Person](Json.parse("""{
  "id":0,
  "firstName":"Arthur",
  "lastName":"Dent",
  "email":"example.com",
  "birthDate":"1952-03-11"
}"""))
// => JsError(List((/email,List(ValidationError(validate.error.email,WrappedArray())))))