Value changed in a QTableView field

[franz]

I never used QSqlTableModel, but as far as QTableView if you want users to edit data I think you should use QTableWidget instead.

Just a remark here: QTableWidget is basically a QTableModel a filter and a QTableView put into one convenience widget. When the model supports data for the Qt::EditRole, then QTableView will be perfectly able to support editing of data.