Using QJson for read and display A list into QStandardItemModel

This more or less what Qt do with ui which xml file convert to .h. What I'm trying to do is get List from Json file
_____________JsonFile_____________

Code:

---

{
"common_message": {
                         "Id_message": "NA"
                         "Lenght" : "NA",
                         "bit" : "NA",[B][/B]
                         etc
                              }
}

---

_________________________________

I want to display Id_message in qstring and the rest of the field

___________________main.cpp______________

Code:

---

QString filename = QFileDialog::getOpenFileName(
 
                this,
 
                tr("Charger les resources HW"),
 
                "C//workspace_llb_27-05-2016/10_Terminal_Generic/configuration",
 
                "json document (*.json)"
 
                );
 
    QFile file(filename);
 
    QString in;
 
 
 
    if (!file.open(QIODevice::ReadWrite))
 
    {
 
        QMessageBox::information(0,"info",file.errorString());
 
        return;
 
    }
 
    in = file.readAll();
 
    file.close();
 
//    qWarning() << in;
 
    m_configHw = QJsonDocument::fromJson(in.toUtf8());
 
    buildDock();
 
}
 
 
 
// TODO 
void MainWindow::buildDock()
 
{
 
    QDockWidget *dock = new QDockWidget("test",this);
 
    dock->setAllowedAreas(Qt::LeftDockWidgetArea | Qt::RightDockWidgetArea);
 
 
 
    QJsonObject jsonObject = m_configHw.object();
 
 
 
//    QStringList list = jsonObject.keys();
 
//    QVariantList list = jsonArray.toVariantList();
 
//    QJsonArray jsonArray = jsonObject.value("common_message").toArray();
 
//      QStringList list = jsonObject.value("common_message").toString();
 
      QJsonArray jsonArray = jsonObject.value("common_message").toArray();
 
 
 
      QVariantList list = jsonArray.toVariantList();
 
//      for(int i(0); i< jsonArray.size(), i++){
 
//          QJsonObject obj = jsonArray[i].toObject();
 
//          list.append(obj.);
 
//      }
 
 
 
//    foreach(const QJsonValue & value, jsonArray){
 
//        QJsonObject obj = value.toObject();
 
//        list = obj.keys();
 
//    }
 
      foreach(const QVariant & value, jsonArray){
 
          QVariantMap obj = value.toMap();
 
          qDebug() << obj.value("Id_message");
 
      }
 
 
 
 
 
//    QVariantMap pair = jsonObject.toVariantMap();
 
 
 
//    QAbstractItemModel *model = new QStringListModel(list.toStdList());
 
//    QListView *view = new QListView;
 
//    view->setModel(model);
 
 
 
//    ui->dockWidgetContents->setAllowedAreas(Qt::LeftDockWidgetArea | Qt::RightDockWidgetArea);
 
//    dock->setWidget(view);
 
    addDockWidget(Qt::LeftDockWidgetArea, dock);
}

---

Sorry It's a lot messy but my aim is to display a list of json and a least in my IHM change the values in time. how could I do a list from the field in my json ?
If you don't get it what I'm trying to do ask me question !
Thanks for any advice

You are trying to convert the value of "common_message" into an array, but it is not an array.
"common_message" is an object.

Also, don't convert the return value of QFile::readAll() needlessly into a QString and then back into a QByteArray.

Cheers,
_

oh thanks a lot indeed. I just did what you said :
[CODE]
QJsonObject JsonObject = m_configHw.Object();
QStringList list;

foreach(const QJsonValue & value, jsonObject){
QJsonObject obj = value.toObject();
list.append(obj.keys());
}

QAbstractItemModel *model = new QStringListModel(list);

QListView *view = new QListView;

view->setModel(model);
dock->setWidget(view);
[\CODE]

yeah I heard about the readall(). I'm going to change it
Cheers