examples/sql/querymodel/editablesqlmodel.cpp
changeset 0 1918ee327afb
child 4 3b1da2848fc7
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/sql/querymodel/editablesqlmodel.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,110 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtSql>
+
+#include "editablesqlmodel.h"
+
+EditableSqlModel::EditableSqlModel(QObject *parent)
+    : QSqlQueryModel(parent)
+{
+}
+
+//! [0]
+Qt::ItemFlags EditableSqlModel::flags(
+        const QModelIndex &index) const
+{
+    Qt::ItemFlags flags = QSqlQueryModel::flags(index);
+    if (index.column() == 1 || index.column() == 2)
+        flags |= Qt::ItemIsEditable;
+    return flags;
+}
+//! [0]
+
+//! [1]
+bool EditableSqlModel::setData(const QModelIndex &index, const QVariant &value, int /* role */)
+{
+    if (index.column() < 1 || index.column() > 2)
+        return false;
+
+    QModelIndex primaryKeyIndex = QSqlQueryModel::index(index.row(), 0);
+    int id = data(primaryKeyIndex).toInt();
+
+    clear();
+
+    bool ok;
+    if (index.column() == 1) {
+        ok = setFirstName(id, value.toString());
+    } else {
+        ok = setLastName(id, value.toString());
+    }
+    refresh();
+    return ok;
+}
+//! [1]
+
+void EditableSqlModel::refresh()
+{
+    setQuery("select * from person");
+    setHeaderData(0, Qt::Horizontal, QObject::tr("ID"));
+    setHeaderData(1, Qt::Horizontal, QObject::tr("First name"));
+    setHeaderData(2, Qt::Horizontal, QObject::tr("Last name"));
+}
+
+//! [2]
+bool EditableSqlModel::setFirstName(int personId, const QString &firstName)
+{
+    QSqlQuery query;
+    query.prepare("update person set firstname = ? where id = ?");
+    query.addBindValue(firstName);
+    query.addBindValue(personId);
+    return query.exec();
+}
+//! [2]
+
+bool EditableSqlModel::setLastName(int personId, const QString &lastName)
+{
+    QSqlQuery query;
+    query.prepare("update person set lastname = ? where id = ?");
+    query.addBindValue(lastName);
+    query.addBindValue(personId);
+    return query.exec();
+}