Deleting row from QTableWidget and from Sqlite database

Christian Ehrlicher

@Risver said in Deleting row from QTableWidget and from Sqlite database:

Okay and how can i connect it with the button_clicked signal?

You won't
When you react on the button clicked signal, get the current selection from the view and delete the selected rows in the model.

Risver

@Christian-Ehrlicher said in Deleting row from QTableWidget and from Sqlite database:

@Risver said in Deleting row from QTableWidget and from Sqlite database:

Okay and how can i connect it with the button_clicked signal?

You won't
When you react on the button clicked signal, get the current selection from the view and delete the selected rows in the model.

Something like this ?

void MainWindow::on_remove_clicked()
{
    int selectedRow = ui->tableView->selectionModel()->currentIndex().row();
    
}

Christian Ehrlicher

@Risver Yes.

Risver

@Christian-Ehrlicher
Now when i'm trying to implement QSqlTableModel::deleteRowFromTable the debugger says the deleteRowFromTable is a protected member of QSqlTableModel

jsulm

@Risver https://doc.qt.io/qt-5/qsqltablemodel.html#removeRows

Risver

@jsulm
Could you give some example ?

jsulm

@Risver Example?

model->removeRows(row, 1);

Risver

@jsulm
Now i have error - reference to type 'const QModelIndex' could not bind to an rvalue of type 'int'.
I think i have to refer to QModelIndex but i don't know how. I have a QSqlQueryModel. Should i change it to QAbstractTableModel ?

jsulm

@Risver Please show how you're calling removeRows
And what Qt version do you use?

Risver

@jsulm

void MainWindow::on_remove_clicked()
{

    if (ui->tableView->selectionModel()->hasSelection())
    {
        int addressId = ui->tableView->selectionModel()->currentIndex().row();
        querymodel->removeRow(addressId, 1);
        qDebug() << addressId;
    }
}

The QT version is 5.0.2

jsulm

@Risver said in Deleting row from QTableWidget and from Sqlite database:

QT version is 5.0.2

Check the documentation for removeRows() in that Qt version.
Probably it has a different signature.

Is there a reason why you're using such an ancient version?

Risver

@jsulm said in Deleting row from QTableWidget and from Sqlite database:

Is there a reason why you're using such an ancient version?

I just installed it a while time ago.

JonB

@Risver said in Deleting row from QTableWidget and from Sqlite database:

I just installed it a while time ago.

Before you spend any more time on this. Qt5 is already up to 5.15, unless you have some deep reason for wanting 5.0 I would uninstall and get such an up-to-date version.

Risver

@JonB
I can just upgrade Qt to v6 and see if it works

JonB

@Risver
You can indeed, though my personal preference would be to take the latest Qt5.x release. I still see too many issues with Qt6, not to mention that I think they still have not ported all modules, depends what bits you will be using.

However, my learned colleagues may disagree and advise you to go for Qt6, i don't know....

Risver

@JonB
I'm installing Qt 6 for now, i will check if everything works. If it won't i will install Qt 5.15

Okay, I configured the project in the new Qt and i still have the same error.

jsulm

@Risver said in Deleting row from QTableWidget and from Sqlite database:

I configured the project in the new Qt and i still have the same error.

And you are sure you're building with Qt6 now?
And did you do a complete rebuild?

Risver

@jsulm said in Deleting row from QTableWidget and from Sqlite database:

@Risver said in Deleting row from QTableWidget and from Sqlite database:

I configured the project in the new Qt and i still have the same error.

And you are sure you're building with Qt6 now?
And did you do a complete rebuild?

Yes i'm sure i building with Qt6, ~~but i'm not sure how can i complete rebuild the project.~~
found this. Still have error

mchinand

@Risver said in Deleting row from QTableWidget and from Sqlite database:

The QT version is 5.0.2

I'm guessing 5.0.2 is/was your QtCreator version (the IDE) not the version of Qt. Look at the 'Kit' you are using, it will say what version of Qt you are using.

Christian Ehrlicher

querymodel->removeRow(addressId, 1);

model->removeRows(row, 1);

removeRow() != removeRows()