如何使用OnManualSubmit从QSqlTableModel中获取脏数据

QSqlTableModel *model = new QSqlTableModel(parent);
model->setTable("your_table_name");
model->setEditStrategy(QSqlTableModel::OnManualSubmit);
model->select();

model->setData(model->index(row, column), newValue);

QList<QSqlRecord> dirtyRecords;
for (int row = 0; row < model->rowCount(); ++row) {
    QSqlRecord record = model->record(row);
    if (model->isDirty(row)) {
        dirtyRecords.append(record);
    }
}

if (!dirtyRecords.isEmpty()) {
    foreach (const QSqlRecord &record, dirtyRecords) {
        model->setRecord(record.row(), record);
    }
    model->submitAll();
}