小编use*_*010的帖子

我正在尝试找到一种方法来使用内置的Macro Json Writer来序列化Seq [(String,Customer)]

我设法为Seq [Customer]做了这个,但是当添加touple时,编译器开始尖叫我.

此代码有效:

package models.health

import play.api.libs.json._

case class Customer(name: String, age: Int)

//we use the dummy var as a workaround to the json writer    limitations (cannot handle single argument case class)
case class Demo(customers: Seq[Customer], dummy: Option[String] =    None)

object Demo {

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

 implicit val customer_writer = Json.writes[Customer]

 implicit val writes: Writes[Demo] = (
 (__ \ "customers").write[Seq[Customer]] and
 (__ \ "dummy").writeNullable[String]) { 
    (d: Demo) => (d.customers,d.dummy)
 }

}

但是下面的代码(只需从Seq [Customer]更改为Seq [(String,Customer)]不会Copmile ...真的很感激任何帮助:

package models.health …