How to get index[int] of current selected row from ListView in Qt with C++?

[time]

I am trying to delete row in my database, through Qt ListView. So in GUI window I have listView with some data. User select one row and after clicking 'delete button', the row is deleting from ListView and database. I have problem with getting the number of the row which the user selected. The program returning me value -1

void MainWindow::on_pushButtonUsunWydatek_clicked()
{
connectionOpen(); // Open connection to the DB
QSqlQueryModel model;

int index = ui->listView_Wydatki->currentIndex().row(); //want to get current selected row by the user HERE is the main problem

int id = model.record(index).value("id").toInt(); //here I collect specific ID from Database

//here I check if it get well
qDebug() << "ID: " << id;
qDebug() << "Index: " << index;

model.setQuery("DELETE FROM wydatki WHERE id = "id" "); // additional question: how to properly put 'id' variable here?

connectionClose(); //closing connection with DB 

}

[raven-worx]

@time said in How to get index[int] of current selected row from ListView in Qt with C++?:

what does the following output?
qDebug() << model.record(index).value("id")

model.setQuery("DELETE FROM wydatki WHERE id = "id" "); // additional question: how to properly put 'id' variable here?

There are multiple possible solutions. One can be model.setQuery( QString("DELETE FROM wydatki WHERE id = \"") + id + "\"" )

[time]

@raven-worx Thank you. And what with other problems? Especially with getting index of the selected row in ListView?
I can't get the output qDebug() << model.record(index).value("id") because I don't have properly index. The program returning index -1

[VRonin]

ui->listView_Wydatki->selectionModel()->selectedIndexes() will return a list of selected indexes. do not use currentIndex() as if you deselect an item current index will be that item