mirror of
https://github.com/crystalidea/qt6windows7.git
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81 lines
2.3 KiB
C++
81 lines
2.3 KiB
C++
// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#include <QtWidgets>
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#include <QtSql>
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#include "../connection.h"
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#include <memory>
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void initializeModel(QSqlRelationalTableModel *model)
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{
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//! [0]
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model->setTable("employee");
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//! [0]
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model->setEditStrategy(QSqlTableModel::OnManualSubmit);
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//! [1]
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model->setRelation(2, QSqlRelation("city", "id", "name"));
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//! [1] //! [2]
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model->setRelation(3, QSqlRelation("country", "id", "name"));
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//! [2]
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//! [3]
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model->setHeaderData(0, Qt::Horizontal, QObject::tr("ID"));
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model->setHeaderData(1, Qt::Horizontal, QObject::tr("Name"));
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model->setHeaderData(2, Qt::Horizontal, QObject::tr("City"));
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model->setHeaderData(3, Qt::Horizontal, QObject::tr("Country"));
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//! [3]
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model->select();
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}
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std::unique_ptr<QTableView> createView(const QString &title, QSqlTableModel *model)
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{
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//! [4]
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std::unique_ptr<QTableView> view{new QTableView};
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view->setModel(model);
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view->setItemDelegate(new QSqlRelationalDelegate(view.get()));
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//! [4]
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view->setWindowTitle(title);
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return view;
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}
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void createRelationalTables()
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{
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QSqlQuery query;
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query.exec("create table employee(id int primary key, name varchar(20), city int, country int)");
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query.exec("insert into employee values(1, 'Espen', 5000, 47)");
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query.exec("insert into employee values(2, 'Harald', 80000, 49)");
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query.exec("insert into employee values(3, 'Sam', 100, 1)");
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query.exec("create table city(id int, name varchar(20))");
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query.exec("insert into city values(100, 'San Jose')");
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query.exec("insert into city values(5000, 'Oslo')");
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query.exec("insert into city values(80000, 'Munich')");
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query.exec("create table country(id int, name varchar(20))");
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query.exec("insert into country values(1, 'USA')");
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query.exec("insert into country values(47, 'Norway')");
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query.exec("insert into country values(49, 'Germany')");
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}
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int main(int argc, char *argv[])
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{
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QApplication app(argc, argv);
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if (!createConnection())
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return EXIT_FAILURE;
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createRelationalTables();
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QSqlRelationalTableModel model;
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initializeModel(&model);
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std::unique_ptr<QTableView> view = createView(QObject::tr("Relational Table Model"), &model);
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view->show();
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return app.exec();
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}
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