sqlcontactmodel.cpp Example File

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 #include "sqlcontactmodel.h"

 #include <QDebug>
 #include <QSqlError>
 #include <QSqlQuery>

 static void createTable()
 {
     if (QSqlDatabase::database().tables().contains(QStringLiteral("Contacts"))) {
         // The table already exists; we don't need to do anything.
         return;
     }

     QSqlQuery query;
     if (!query.exec(
         "CREATE TABLE IF NOT EXISTS 'Contacts' ("
         "   'name' TEXT NOT NULL,"
         "   PRIMARY KEY(name)"
         ")")) {
         qFatal("Failed to query database: %s", qPrintable(query.lastError().text()));
     }

     query.exec("INSERT INTO Contacts VALUES('Albert Einstein')");
     query.exec("INSERT INTO Contacts VALUES('Ernest Hemingway')");
     query.exec("INSERT INTO Contacts VALUES('Hans Gude')");
 }

 SqlContactModel::SqlContactModel(QObject *parent) :
     QSqlQueryModel(parent)
 {
     createTable();

     QSqlQuery query;
     if (!query.exec("SELECT * FROM Contacts"))
         qFatal("Contacts SELECT query failed: %s", qPrintable(query.lastError().text()));

     setQuery(query);
     if (lastError().isValid())
         qFatal("Cannot set query on SqlContactModel: %s", qPrintable(lastError().text()));
 }