nietaki
2014-07-01 23:56:55
You have access to the JSON object's fields as a sequence of (String, JsValue) pairs and you can filter through them. You can filter out the ones with and without value and use the filtered sequences to construct new JsObject objects.
import play.api.libs.json._
val ls =
("field1", JsString("value1")) ::
("field2", JsString("")) ::
("field3", JsString("value3")) ::
("field4", JsString("")) ::
Nil
val js0 = new JsObject(ls)
def withoutValue(v: JsValue) = v match {
case JsNull => true
case JsString("") => true
case _ => false
}
val js1 = JsObject(js0.fields.filterNot(t => withoutValue(t._2)))
val js2 = JsObject(js0.fields.filter(t => withoutValue(t._2)))
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