qt5base-lts/examples/sql/cachedtable/tableeditor.cpp

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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
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** This file is part of the examples of the Qt Toolkit.
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#include <QtWidgets>
#include <QtSql>
#include "tableeditor.h"
//! [0]
TableEditor::TableEditor(const QString &tableName, QWidget *parent)
: QWidget(parent)
{
model = new QSqlTableModel(this);
model->setTable(tableName);
model->setEditStrategy(QSqlTableModel::OnManualSubmit);
model->select();
model->setHeaderData(0, Qt::Horizontal, tr("ID"));
model->setHeaderData(1, Qt::Horizontal, tr("First name"));
model->setHeaderData(2, Qt::Horizontal, tr("Last name"));
//! [0] //! [1]
QTableView *view = new QTableView;
view->setModel(model);
view->resizeColumnsToContents();
//! [1]
//! [2]
submitButton = new QPushButton(tr("Submit"));
submitButton->setDefault(true);
revertButton = new QPushButton(tr("&Revert"));
quitButton = new QPushButton(tr("Quit"));
buttonBox = new QDialogButtonBox(Qt::Vertical);
buttonBox->addButton(submitButton, QDialogButtonBox::ActionRole);
buttonBox->addButton(revertButton, QDialogButtonBox::ActionRole);
buttonBox->addButton(quitButton, QDialogButtonBox::RejectRole);
//! [2]
//! [3]
connect(submitButton, SIGNAL(clicked()), this, SLOT(submit()));
connect(revertButton, SIGNAL(clicked()), model, SLOT(revertAll()));
connect(quitButton, SIGNAL(clicked()), this, SLOT(close()));
//! [3]
//! [4]
QHBoxLayout *mainLayout = new QHBoxLayout;
mainLayout->addWidget(view);
mainLayout->addWidget(buttonBox);
setLayout(mainLayout);
setWindowTitle(tr("Cached Table"));
}
//! [4]
//! [5]
void TableEditor::submit()
{
model->database().transaction();
if (model->submitAll()) {
model->database().commit();
} else {
model->database().rollback();
QMessageBox::warning(this, tr("Cached Table"),
tr("The database reported an error: %1")
.arg(model->lastError().text()));
}
}
//! [5]