I super appreciate if anyone can explain something I'm seeing with a combo box and my widget mapper when I call QInputDialog...

I have a QSqlTableModel with values from a row in the database mapped to a combo box. I have a second QsqlTableModel with values mapped to a combo box as well, and it's values are determined by using the first combo box selection as a filter. Image the first CB being a list of baseball teams and clicking on a team causes that team's players to populate this second one; choose a different team in the first and the 2nd changes accordingly.

This works perfectly until the user decides to add a new value to the 2nd combo box by clicking a "New" pushbutton -- I have a clicked() signal calling a slot which calls QInputDialog to prompt for a value...Suddenly, the value in my first combo box resets to the value found at current_index(0) as soon as the dialog is displayed! Just for fun, I checked the index of the first combo box and it's correct before the dialog is displayed, but reset afterwards...I can't find what I'm doing wrong so I don't know what I'm doing wrong...

I commented out the QInputDialog call and just hard coded a value and everything worked fine...

Any ideas? Thanks!


scott



This is the constructor for the first model/combo box
Qt Code: 
  1. //*****************
  2.    //*  Rig Data...  *
  3.    //*****************
  4.    rigmodel = new QSqlTableModel(this);
  5.    rigmodel->setTable ("rig");
  6.    rigmodel->sort (1, Qt::AscendingOrder);
  7.    rigmodel->setEditStrategy (QSqlTableModel::OnFieldChange);
  8.  
  9.    rigmodel->select ();
  10.  
  11.    record = rigmodel->record (0);
  12.    rig_id =  record.value ("rig_id").toInt ();
  13.  
  14.    rignamemapper = new QDataWidgetMapper(this);
  15.    rignamemapper->setModel (rigmodel);
  16.    rignamemapper->setSubmitPolicy(QDataWidgetMapper::AutoSubmit);
  17.    rignamemapper->toFirst ();
  18.    rignamemapper->addMapping (ui->RigInvNameCB, 1);
  19.  
  20.    ui->RigInvNameCB->setModel (rigmodel);
  21.    ui->RigInvNameCB->setModelColumn (1);
  22.    ui->RigInvNameCB->setCurrentIndex (0);
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This is for the second model/combo box
Qt Code: 
  1. //***************************
  2.    //*  Rig Inventory Data...  *
  3.    //***************************
  4.    riginvmodel = new QSqlTableModel(this);
  5.    riginvmodel->setTable ("riginv");
  6.    riginvmodel->sort (32, Qt::AscendingOrder);
  7.    riginvmodel->setEditStrategy (QSqlTableModel::OnFieldChange);
  8.    riginvmodel->setFilter (QString("riginv_rig_id = %1").arg(rig_id));
  9.    riginvmodel->select ();
  10.  
  11.    riginvmapper = new QDataWidgetMapper(this);
  12.    riginvmapper->setModel (riginvmodel);
  13.    riginvmapper->setSubmitPolicy(QDataWidgetMapper::AutoSubmit);
  14.    riginvmapper->toFirst ();
  15.    riginvmapper->addMapping (ui->EquipIDCB, 32);
  16.  
  17.    ui->EquipIDCB->setModel (riginvmodel);
  18.    ui->EquipIDCB->setModelColumn (32);
  19.    ui->EquipIDCB->setCurrentIndex (0);
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The slot where I'm having problems
Qt Code: 
  1. void MainWindow::on_NewEquipIDPB_clicked()
  2. {
  3.    int row;
  4.    bool ok;
  5.    int current_rig_id;
  6.  
  7.    QString newequipname;
  8.  
  9.    QSqlRecord record;
  10.  
  11.    qDebug() << "combo index " << ui->RigInvNameCB->currentIndex ();
  12.    qDebug() << "mapper index " << rignamemapper->currentIndex ();
  13.  
  14.    //**************************************************
  15.    //*  Go get a name for this piece of equipment...  *
  16.    //**************************************************
  17.    newequipname = QInputDialog::getText (this, tr("New Equipment Name"),
  18.                            tr("Enter a Name for this piece of Equipment"),
  19.                            QLineEdit::Normal, QString(), &ok);
  20.  
  21.    qDebug() << "combo index " << ui->RigInvNameCB->currentIndex ();
  22.    qDebug() << "mapper index " << rignamemapper->currentIndex ();
  23.  
  24.    if (ok && !newequipname.isEmpty ())
  25. .
  26. .
  27. .
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Results of the qDebug() calls:

Qt Code: 
  1. combo index  2 
  2. mapper index  2 
  3.  
  4. combo index  0 
  5. mapper index  -1
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