Remove a key from a JsValue in Scala

Question

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 :

Answer 1

I came across this question when I wanted to remove a nested field from a json object, and since subtracting doesn't work for nested fields, I'm adding the solution I ended up using.

To remove a field from a JsObject you can use prune to remove the entire path to that field.

For the example above -

val p = JsPath \ "id"
val res = p.prune(body.as[JsObject]).get

If you had a nested object like this -

{
     "url": "www.google.com",
     "id":  {"first": "123", "second": "456"}
     "count" : 1,
     "label" : "test"  
 }

you could create a more specific path -

val p = JsPath \ "id" \ "second"
val res = p.prune(body.as[JsObject]).get