editablesqlmodel.cpp Example File
sql/querymodel/editablesqlmodel.cpp
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** This file is part of the documentation of the Qt Toolkit.
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#include <QtSql>
#include "editablesqlmodel.h"
EditableSqlModel::EditableSqlModel(QObject *parent)
: QSqlQueryModel(parent)
{
}
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;
}
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;
}
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"));
}
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();
}
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();
}