Packages

  • package root
    Definition Classes
    root
  • package play
    Definition Classes
    root
  • package api
    Definition Classes
    play
  • package libs
    Definition Classes
    api
  • package json

    Json API

    Json API

    For example:

    import play.api.libs.json._
import play.api.libs.functional.syntax._

case class User(id: Long, name: String, friends: Seq[User] = Seq.empty)
object User {

  // In this format, an undefined friends property is mapped to an empty list
  implicit val format: Format[User] = (
    (__ \ "id").format[Long] and
    (__ \ "name").format[String] and
    (__ \ "friends").lazyFormatNullable(implicitly[Format[Seq[User]]])
      .inmap[Seq[User]](_ getOrElse Seq.empty, Some(_))
  )(User.apply, unlift(User.unapply))
}

object MyController extends play.api.mvc.Controller {
   def displayUserAsJson(id: String) = Action {
      Ok(Json.toJson(User(id.toLong, "myName")))
   }

   def saveUser(jsonString: String)= Action {
     val user = Json.parse(jsonString).as[User]
     //myDataStore.save(user)
     Ok
   }
}
    Definition Classes
    libs
  • package jackson
    Definition Classes
    json
  • PlayJsonMapperModule
  • package util
    Definition Classes
    json

package jackson

Type Members

  1. sealed class PlayJsonMapperModule extends SimpleModule

    The Play JSON module for Jackson.

    The Play JSON module for Jackson.

    This can be used if you want to use a custom Jackson ObjectMapper, or more advanced Jackson features when working with JsValue. To use this:

    import com.fasterxml.jackson.databind.ObjectMapper

import play.api.libs.json.JsValue
import play.api.libs.json.jackson.PlayJsonMapperModule
import play.api.libs.json.JsonConfig

val jsonSettings = JsonConfig.settings
val mapper = new ObjectMapper().registerModule(
  new PlayJsonMapperModule(jsonSettings))
val jsValue = mapper.readValue("""{"foo":"bar"}""", classOf[JsValue])

Ungrouped