从Scala中的JsValue删除键 [英] Remove a key from a JsValue in Scala

问题描述

这可能是一个非常简单的问题，但是我很难找到一个干净/可行的解决方案. 我只想从我拥有的json对象中删除一个字段. 假设我有:

It's probably a very easy question but I'm having trouble finding a clean/working solution. I just want to remove a field from a json object I have. Let's say I have :

val body:Option[JsValue] = request.body.asJson

身体外观:

{
     "url": "www.google.com",
     "id":  "123",
     "count" : 1,
     "label" : "test"  
 }

，我想从中删除字段"id".

and I want to remove the field "id" from it.

我已阅读> http://www.playframework.com/documentation/2.1.1/ScalaJsonTransformers 案例6，但不幸的是无法完全理解它. (我对Scala和函数式编程非常陌生)

I have read http://www.playframework.com/documentation/2.1.1/ScalaJsonTransformers case#6 but unfortunately couldn't fully understand it. (I'm pretty new to Scala and functional programming)

谢谢！

推荐答案

这可以作为JsObject来完成，它扩展了JsValue:

This can be done as a JsObject, which extends JsValue:

body.as[JsObject] - "id"

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