extract values from json result

Qjay

hey i get a respnse from an api which looks like this

{
	"results": [{
		"series": [{
			"columns": ["tagKey"],
			"name": "EVENT",
			"values": [
				["alias"],
				["name"],
				["variabletype"]
			]
		}],
		"statement_id": 0
	}]
}

i want to get "values" values . how can i get it ?

so far i have this

Qstring result = "json result here"
QJsonDocument doc = QJsonDocument::fromJson(result.toUtf8());
            qDebug() << "doc :" << doc;
            QJsonObject doc_obj = doc.object();
            qDebug() << "doc_obj :" << doc_obj;
            QJsonArray doc_array = doc_obj.value("results").toArray();
            qDebug() << "doc_array : "<< doc_array;

Christian Ehrlicher

Where exactly do you hit a problem now? On how to iterate over a QJsonArray?

Qjay

i want to get value form "values" like alias,name, variabletype.

yes you can say i am having issue with iterating over it.

jsulm

@Qjay There is https://doc.qt.io/qt-5/qjsonarray.html#operator-5b-5d-1 operator to iterate over QJsonArray elements.
And you get number of elements using https://doc.qt.io/qt-5/qjsonarray.html#size
So, a for() loop shouldn't be an issue.

Qjay

well this is how i have done it. Not sure if this is even the right way ( looks like a mess to me)

QJsonDocument doc = QJsonDocument::fromJson(result.toUtf8());
            qDebug() << "doc :" << doc;
            QJsonObject doc_obj = doc.object();
            qDebug() << "doc_obj :" << doc_obj;
            QJsonArray doc_array = doc_obj.value("results").toArray();
            doc_obj =  doc_array[0].toObject();
            doc_array =  doc_obj.value("series").toArray();
            doc_obj =  doc_array[0].toObject();
            doc_array =  doc_obj.value("values").toArray();
            for(int i = 0; i < doc_array.size(); i++)
            {
                QJsonArray arr =  doc_array[i].toArray();
                qDebug() << "doc value : " << arr[1].toString();
            }

i am getting resuls though