QDataWidgetMapper with a QComboBox and a QSortFilterProxyModel

Wowbagger

Hi there,

I'm using QDataWidgetMapper to map a column from a QSortFilterProxyModel to a QComboBox.

@ QSqlRelationalTableModel *m_Model;
QSortFilterProxyModel *m_ProxyModel;
m_ProxyModel->setSourceModel(m_Model);

mapper = new QDataWidgetMapper(this);
mapper->setModel(m_ProxyModel);

QSqlTableModel *relModel = m_Model->relationModel(typeIndex); 
projektComboBox->setModel(relModel);
projektComboBox->setModelColumn(relModel->fieldIndex("projectID");
mapper->addMapping(projektComboBox, typeIndex);@

The values is displayed correctly in the ComboBox. But changes are not written to m_ProxyModel.

If I use the QSqlRelationalTableModel for mapping instead QSortFilterProxyModel for the mapping, everything works fine.

Another column mapped on a QLineEdit works fine with both: QSqlRelationalTableModel and QSortFilterProxyModel). Only QComboBox has the problem.

I posted a sample code in a german forum. You can download it here:
"Sample Code for the modelproblem":http://qtforum.de/forum/download/file.php?id=1627

In the sample you can change the used model (QSqlRelationalTableModel/QSortFilterProxyModel) in line 23/24 in mainwindow.cpp

Can anyone help me?

Wowbagger

Has anybody a idea?

SGaist

Hi and welcome to devnet,

Which version of Qt are you using ? On which OS ?

Wowbagger

bq. Which version of Qt are you using ? On which OS ?

It's QT 5.1.1 on Linux.

SGaist

Just tested in OS X and the behavior is the same.

Try checking the "bug report system":http://bugreports.qt-project.org to see whether it's a known issue. If not you could open a new bug report with this minimal compilable example