[Qt-interest] QSortFilterProxyModel over a QSqlRelationalTableModel

[mario]

Hi all.

Problem: I have QSqlRelationalTableModel to show in a QTableView.
I put a QSortFilterProxyModel between the sqlmodel and the view... It
works but I loose the "automatic combobox features": when I
doubleclick on the reliation cell, a normal editor appears.

No matter if I write or not:

tableView->setItemDelegate( new QSqlRelationalDelegate(tableView) );

This is the source code of QSqlRelationalDelegate

[...]
QWidget *createEditor(QWidget *parent,
                      const QStyleOptionViewItem &option,
                      const QModelIndex &index) const
{
    const QSqlRelationalTableModel *sqlModel = qobject_cast<const
QSqlRelationalTableModel *>(index.model());
    QSqlTableModel *childModel = sqlModel ?
sqlModel->relationModel(index.column()) : 0;
    if (!childModel)
        return QItemDelegate::createEditor(parent, option, index);

[...]

Obviously the cast fails, and the "QItemDelegate::createEditor(parent,
option, index);" is called.

How can I do?
The only solution I see is to paste the code from
QSqlRelationalDelegate in my own delegate... (I know... 10 lines..
but.. seems bad)

Tnx


-- 
Mario Signorino | www.sgrunt.net