P3: Somewhat important Description
Problem is when QVariant contains value of QJsonValue, QJsonObject or QJsonArray type.
QJsonValue::fromVariant() will then try to use conversion to String and if it fails it will return Null QJsonValue.
Example:
#include <QCoreApplication>
#include <QVariant>
#include <QJsonValue>
#include <QDebug>
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
QJsonValue jsonValue(1);
QVariant var(jsonValue);
qDebug() << var;
// output: QVariant(QJsonValue, QJsonValue(double, 1) )
qDebug() << QJsonValue::fromVariant(var);
// output: QJsonValue(null)
return 0;
}
It would be much better if this could work in more natural way.
Converting QVarinat containing one of QJsonValue types should result into QJsonValue of same type.
Attachments
| For Gerrit Dashboard: QTBUG-41234 | ||||||
|---|---|---|---|---|---|---|
| # | Subject | Branch | Project | Status | CR | V |
| 109075,3 | Fix QJsonValue::fromVariant() if the variant contains a json object | 5.6 | qt/qtbase | Status: MERGED | +2 | 0 |