CODEWITHSUNDEEP
scalaplayframeworkplayframework-2.0
ps0604
ps0604

Reputation: 1071

Play for Scala: replicate structure in Json of array within array

I have in Scala an array array1 that contains, among other things, another array array2.

Now, I'm trying to replicate the structure in Json using Play. This is my attempt:

    var json = JsObject(Seq())
    array1.foreach(a1 => {
      json += "a1" -> JsNumber(a1.name) + 
      "a2" -> a1.array2.foreach {
        a2 => "a2" -> JsString(a2.name)
      }
    })

The error I'm getting is type mismatch; found : Unit required: play.api.libs.json.JsValue

How to fix this? thanks in advance.

Upvotes: 1

Views: 35

Answers (1)

Bruce Lowe
Bruce Lowe

Reputation: 6203

You probably want is to use map instead of foreach in the loops.

It's a little unclear as to what json you want, but based on the description of your objects, I'd say this is probably what you are a looking for:

val json =  JsArray(array1.map { a1 =>
  JsObject(List(
    "a1" -> JsNumber(a1.name),
    "a2" -> JsArray(a1.array2.map {
      a2 => JsString(a2.name)
    })
  ))
})

Upvotes: 1

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