QTableView doesn't show data.

[Vladislav Lisovenko]

I'm trying to display data from database. There is my code:

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    DBClient dbClient;
    QSqlDatabase *db=dbClient.getConnection();

    QSqlQueryModel model;
    model.setQuery("select _id,descr from students limit 10");

    if(model.lastError().isValid()){
        qDebug() << model.lastError();
    }

    ui->tableView->setModel(&model);

    qDebug() << ui->tableView->model()->columnCount();
    qDebug() << ui->tableView->model()->rowCount();
}

Application output:
2
10
It means that columns and data exist in tableView, but visually tableView is absolutely empty, I don't see neither columns nor data and I don't know why.

[Devopia53]

Hi

Since you allocate your QSqlQueryModel on the stack it's destroyed at the end of MainWindow constructor.

So you should allocated on the heap...

[Vladislav Lisovenko]

@Devopia53 Hi, it works, thanks.