Parsing a QJsonObject from inside another QJsonObject

[LuisAbreu]

So I have a json that looks like this:

     "_className": "ShoppingCart",
     "closedOn": "Fri Mar 27 15:52:13 2015",
     "coupon_count": "0",
     "createdOn": "Fri Mar 27 15:51:09 2015",
     "list": [
         {
             "_className": "Product",
             "discount": "0",
             "fromyoubeep": "1",
             "has_alarm": 0,
             "id": "5601151333457",
             "intendedQuantity": 0,
             "isReady": "1",
             "isUnknown": "0",
             "loyaltyCredit": -1,
             "min_age": 0,
             "name": "Sumo Compal Cl<C3><A1>ssico Tutti-Fruti 1lt",
             "userCreated": "0",
             "weight": "0"
         },
         {
             "_className": "Product",
             "fromyoubeep": "0",
             "has_alarm": 0,
             "id": "",
             "intendedQuantity": 0,
             "isReady": "1",
             "isUnknown": "0",
             "userCreated": "0",
             "weight": "0"
         }
     ],
     "loyaltyCard": {
         "_className": "LoyaltyCard",
         "barcode": "2446037038353",
         "barcodeType": "EAN13",
         "discount": "0",
         "fromyoubeep": "1",
         "has_alarm": 0,
         "id": "2446037038353",
         "intendedQuantity": 0,
         "isReady": "1",
         "isUnknown": "0",
         "loyaltyCredit": 0,
         "min_age": 0,
         "name": "Cart<C3><A3>o Poupa Mais",
         "price": "0",
         "product_id": "-1",
         "quantity": "0",
         "quantityValidated": "0",
         "state": "0",
         "type": 1,
         "userCreated": "0",
         "weight": "0"
     },
     "mobile_checkout": "1",
 } 

as you can see inside the main json I have another json. and I need to parse it in my c++ code.
This is the way I'm doing it, but the json i'm getting is empty:

QJsonObject sett3 = sett2.value(QString("loyaltyCard")).toObject();

sett2 is the main json. And im able to access all of its fields except the ones with a json inside, for example, sett3 is returning empty... :/

[A Former User]

Hi @LuisAbreu!

I cannot confirm this. Are you sure your json file is valid? The following works for me:

============================================
Json file:

{
     "className": "ShoppingCart",
     "closedOn": "Fri Mar 27 15:52:13 2015",
     "coupon_count": "0",
     "createdOn": "Fri Mar 27 15:51:09 2015",
     "list": [
         {
             "_className": "Product",
             "discount": "0",
             "fromyoubeep": "1",
             "has_alarm": 0,
             "id": "5601151333457",
             "intendedQuantity": 0,
             "isReady": "1",
             "isUnknown": "0",
             "loyaltyCredit": -1,
             "min_age": 0,
             "name": "Sumo Compal Cl<C3><A1>ssico Tutti-Fruti 1lt",
             "userCreated": "0",
             "weight": "0"
         },
         {
             "_className": "Product",
             "fromyoubeep": "0",
             "has_alarm": 0,
             "id": "",
             "intendedQuantity": 0,
             "isReady": "1",
             "isUnknown": "0",
             "userCreated": "0",
             "weight": "0"
         }
     ],
     "loyaltyCard": {
         "_className": "LoyaltyCard",
         "barcode": "2446037038353",
         "barcodeType": "EAN13",
         "discount": "0",
         "fromyoubeep": "1",
         "has_alarm": 0,
         "id": "2446037038353",
         "intendedQuantity": 0,
         "isReady": "1",
         "isUnknown": "0",
         "loyaltyCredit": 0,
         "min_age": 0,
         "name": "Cart<C3><A3>o Poupa Mais",
         "price": "0",
         "product_id": "-1",
         "quantity": "0",
         "quantityValidated": "0",
         "state": "0",
         "type": 1,
         "userCreated": "0",
         "weight": "0"
     },
     "mobile_checkout": "1"
}

============================================
C++ code:

    QFile file("/home/pw/file.json");
    if (!file.open(QIODevice::ReadOnly)) {
        qDebug() << "file error";
        return;
    }
    const QByteArray ba = file.readAll();
    file.close();

    QJsonParseError err;
    QJsonDocument doc = QJsonDocument::fromJson(ba, &err);

    qDebug() << err.errorString();
    qDebug() << err.offset;

    QJsonObject sett2 = doc.object();
    qDebug() << sett2.isEmpty();

    QJsonObject sett3 = sett2.value(QString("loyaltyCard")).toObject();
    qDebug() << sett3.isEmpty();

    QJsonValue sett4 = sett3.value(QString("barcode"));
    qDebug() << sett4.toString();

============================================
Cheers!