QTableView是不可编辑的

QT 4.5.2, QTableView is not editable

本文关键字：编辑 QTableView      更新时间：2023-10-16

我只是添加一个新的QTableView到我的表单，设置模型并配置它，但我不能编辑单元格。在其他表中，编辑没有问题。我怎么了?代码:

void MethodicWorkWidget::setupMethod3Model() {
    method3Model = new ExtSqlModel(this);
    method3Model->setTable("methodworks3");
    method3Model->setEditStrategy(QSqlTableModel::OnFieldChange);
    int typeInd = method3Model->fieldIndex("typeid");
    method3Model->setRelation(typeInd, QSqlRelation("methodworks3types", "id", "Name"));
    method3Model->setFilter("teacherid="+QString::number(teacherID));//+" AND YearID="+QString::number(yearID));
    method3Model->setHeaderData(typeInd, Qt::Horizontal, tr("Вид"));
    method3Model->setHeaderData(method3Model->fieldIndex("discipline"), Qt::Horizontal, tr("Дисциплина"));
    method3Model->setHeaderData(method3Model->fieldIndex("theme"),      Qt::Horizontal, tr("Тема"));
    method3Model->setHeaderData(method3Model->fieldIndex("date"),       Qt::Horizontal, tr("Дата проведения"));
    method3Model->setHeaderData(method3Model->fieldIndex("value"),      Qt::Horizontal, tr("Балл"));
    ui.label_2->setText(QString::number(teacherID));
    method3Model->setSort(0, Qt::AscendingOrder);
    //populate and check
    if (!method3Model->select()) {
            QMessageBox::critical(NULL, tr("Ошибка обращения к базе"), tr(
                            "Произошла ошибка при выборе руководства:n")+manageModel->lastError().text());
    }
    ui.method3View->setModel(method3Model);
    ui.method3View->hideColumn(method3Model->fieldIndex("id"));
    ui.method3View->hideColumn(method3Model->fieldIndex("teacherid"));
    ui.method3View->setItemDelegateForColumn(typeInd, new QSqlRelationalDelegate(ui.method3View));
    ui.method3View->resizeColumnsToContents();
    connect(ui.method3AddButton, SIGNAL(clicked()), this, SLOT(method3Add()));
    connect(ui.method3DelButton, SIGNAL(clicked()), this, SLOT(method3Del()));
    ui.method3DelButton->setEnabled(method3Model->rowCount()!=0);
    if(UserInfo::role() == UserInfo::Guest){
            ui.method3AddButton->setEnabled(false);
            ui.method3DelButton->setEnabled(false);
            ui.method3View->setEditTriggers(QAbstractItemView::NoEditTriggers);
    }

}

如果QAbstractItemModel::flags结果包含Qt::ItemIsEditable标志，则该索引是可编辑的。QSqlRelationalTableModel默认是可编辑的，但是当!index.column() < realColNum-2条件不满足时，您可以覆盖flags()并禁用编辑。看来你在那个条件下出错了。注意!运算符的优先级高于<。你可能需要index.column() >= realColNum-2。同时检查realColNum的值

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