editablesqlmodel.cpp Example File

querymodel/editablesqlmodel.cpp
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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(); }