Skinny Framework - Rapid Development in Scala -

Skinny Micro:

• Skinny Micro

Contents:

Older Versions:

• 1.3.x series

Working with JSON

Easy-to-use json4s wrapper

SkinnyController provides the following useful methods from JSONStringOps trait by default.

• def toJSON(v: Any): JValue
• def toJSONString(v: Any, underscoreKeys: Boolean = true): String
• def toPrettyJSONString(v: Any, underscoreKeys: Boolean = true): String
• def fromJSONString[A](json: String)(implicit mf: Manifest[A]): Option[A]

json/src/main/scala/skinny/util/JSONStringOps.scala

The following methods come from JSONFeature trait.

• def responseAsJSON(entity: Any, charset: Option[String] = Some(“utf-8”), prettify: Boolean = false): String

framework/src/main/scala/skinny/controller/feature/JSONFeature.scala

import skinny.util.JSONStringOps._

case class UserResponse(user: User)
case class User(name: String, age: Int, email: String, 
  isAlive: Boolean = false, friend: Option[User] = None)

val jsonString =
  """{
    |  "user": {
    |    "name" : "toto",
    |    "age" : 25,
    |    "email" : "toto@jmail.com",
    |    "isAlive" : true,
    |    "friend" : {
    |      "name" : "tata",
    |      "age" : 20,
    |      "email" : "tata@coldmail.com"
    |    }
    |  }
    |}
  """.stripMargin

val userResponse: Option[UserResponse] = fromJSONString[UserResponse](jsonString)

val jsonString2 = userResponse.map(r => toJSONString(r))

See also: json/src/test/scala/skinny/util/JSONStringOpsSpec.scala

If you need more complex operations, use json4s directly.