[Qt-interest] QSqlRelationalTableModel - Refreshing relation

[Harry Sfougaris]

If I have a relation set in a QSqlRelationalTableMode, how can I refresh the relation?
For example, given the following code:

 QSqlRelationalTableModel *tbl = new QSqlRelationalTableModel(this);
    tbl->setTable("master_data");
    tbl->setRelation(tbl->fieldIndex("detail_id"), QSqlRelation("detail_data", "id", "detail_descr"));
    tbl->select();

If at a later point data is added to the table "detail_data", how can I refresh the relation?
I am using it in a combo like this (in a form that edits the data):
    QSqlTableModel *tbl2= tbl->relationModel( tbl->fieldIndex("detail_descr") );
    ui->tbl2Combo->setModel(tbl2);
    ui->tbl2Combo->setModelColumn( tbl2->fieldIndex("detail_descr")  );

and I can't get the new values in the combo, unless I close and reopen the main table.

Thanks


Harry Sfougaris