2

私はこれで何時間も遊んでいます。読み取りを作成するさまざまな方法を試してきましたが、完全に困惑しています。

私はオンでPlay 2.1.0、Scala 2.10.1

エラー：

type mismatch; found : models.Registration.type required: play.api.libs.json.Reads[?]

コード：

package models

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

case class Registration(
        user: (String,String,String,String,String,String)
)

object RegistrationHelper {
    implicit val regReads: Reads[Registration] = (
      (__ \ "user").read(
        (__ \ "id").read[String] and
        (__ \ "username").read[String] and
        (__ \ "first_name").read[String] and
        (__ \ "last_name").read[String] and
        (__ \ "email_address").read[String] and
        (__ \ "user_avatar").read[String]
        tupled
      )
    )(Registration) //!!ERROR ON THIS LINE
}

JSON:

{
  user: {
    id: "35fc8ba5-56c3-4ebe-9a21-489a1a207d2e",
    username: "flastname",
    first_name: "Firstname",
    last_name: "Lastname",
    email_address: "foo@bar.com",
    user_avatar: "http://blog.ideeinc.com/wp-content/uploads/2010/04/tineye-robot.jpg"
  }
}
4

1 に答える 1

1

これはうまくいくはずです：

implicit val regReads: Reads[Registration] = (__ \ "user").read(
    (__ \ "id").read[String] and
      (__ \ "username").read[String] and
      (__ \ "first_name").read[String] and
      (__ \ "last_name").read[String] and
      (__ \ "email_address").read[String] and
      (__ \ "user_avatar").read[String]
      tupled
  ) map Registration.apply _

詳細については、この質問を参照してください。

于 2013-04-04T03:44:39.137 に答える