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#!/usr/bin/env python
############################################################################
##
## Copyright (C) 2004-2005 Trolltech AS. All rights reserved.
##
## This file is part of the example classes of the Qt Toolkit.
##
## This file may be used under the terms of the GNU General Public
## License version 2.0 as published by the Free Software Foundation
## and appearing in the file LICENSE.GPL included in the packaging of
## this file. Please review the following information to ensure GNU
## General Public Licensing requirements will be met:
## http://www.trolltech.com/products/qt/opensource.html
##
## If you are unsure which license is appropriate for your use, please
## review the following information:
## http://www.trolltech.com/products/qt/licensing.html or contact the
## sales department at sales@trolltech.com.
##
## This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
## WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
##
############################################################################
from PyQt4 import QtCore, QtGui, QtSql
import connection
def initializeModel(model):
model.setTable("employee")
model.setEditStrategy(QtSql.QSqlTableModel.OnManualSubmit)
model.setRelation(2, QtSql.QSqlRelation('city', 'id', 'name'))
model.setRelation(3, QtSql.QSqlRelation('country', 'id', 'name'))
model.setHeaderData(0, QtCore.Qt.Horizontal, "ID")
model.setHeaderData(1, QtCore.Qt.Horizontal, "Name")
model.setHeaderData(2, QtCore.Qt.Horizontal, "City")
model.setHeaderData(3, QtCore.Qt.Horizontal, "Country")
model.select()
def createView(title, model):
view = QtGui.QTableView()
view.setModel(model)
view.setItemDelegate(QtSql.QSqlRelationalDelegate(view))
view.setWindowTitle(title)
return view
def createRelationalTables():
query = QtSql.QSqlQuery()
query.exec_("create table employee(id int, name varchar(20), city int, country int)")
query.exec_("insert into employee values(1, 'Espen', 5000, 47)")
query.exec_("insert into employee values(2, 'Harald', 80000, 49)")
query.exec_("insert into employee values(3, 'Sam', 100, 41)")
query.exec_("create table city(id int, name varchar(20))")
query.exec_("insert into city values(100, 'San Jose')")
query.exec_("insert into city values(5000, 'Oslo')")
query.exec_("insert into city values(80000, 'Munich')")
query.exec_("create table country(id int, name varchar(20))")
query.exec_("insert into country values(41, 'USA')")
query.exec_("insert into country values(47, 'Norway')")
query.exec_("insert into country values(49, 'Germany')")
if __name__ == '__main__':
import sys
app = QtGui.QApplication(sys.argv)
if not connection.createConnection():
sys.exit(1)
createRelationalTables()
model = QtSql.QSqlRelationalTableModel()
initializeModel(model)
view = createView("Relational Table Model", model)
view.show()
sys.exit(app.exec_())
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