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POQSQLTableModel inheritor and QTableView
 

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    <p>I wrote QSQLTableModel inheritor for working with qml and it's work well. I need use it with QTableView too, data shows, but I cannot modify it - when I edit everything is ok, but all changes drop when I get out from field (I know about editStrategy, but the problem occurs earlier). I suppose that something wrong with virtual function, but I cant undestant what. If i create QSqlTableModel with the same parameters, everything is ok. Somebody have any idea how can i fix this? My code:</p> <p>h:</p> <pre><code>class ListModel : public QSqlTableModel { Q_OBJECT Q_PROPERTY( int count READ rowCount() NOTIFY countChanged()) signals: void countChanged(); public: Q_INVOKABLE QVariant data(const QModelIndex &amp;index, int role) const; ListModel(QObject *parent, QSqlDatabase _db):QSqlTableModel(parent,_db){this-&gt;setEditStrategy(QSqlTableModel::OnManualSubmit);} void applyRoles(); #ifdef HAVE_QT5 virtual QHash&lt;int, QByteArray&gt; roleNames() const{return roles;} #endif private: int count; QHash&lt;int, QByteArray&gt; roles; }; </code></pre> <p>cpp:</p> <pre><code>//based on http://qt-project.org/wiki/How_to_use_a_QSqlQueryModel_in_QML void ListModel::applyRoles() { roles.clear(); qDebug()&lt;&lt;"\n"&lt;&lt;this-&gt;tableName(); for (int i = 0; i &lt; this-&gt;columnCount(); i++) { QString role=this-&gt;headerData(i, Qt::Horizontal).toString(); roles[Qt::UserRole + i + 1] = QVariant(role).toByteArray(); qDebug()&lt;&lt;this-&gt;headerData(i, Qt::Horizontal); } #ifndef HAVE_QT5 setRoleNames(roles); #endif } QVariant ListModel::data(const QModelIndex &amp;index, int role) const{ QVariant value; if(role &lt; Qt::UserRole) { value = QSqlQueryModel::data(index, role); } else { int columnIdx = role - Qt::UserRole - 1; QModelIndex modelIndex = this-&gt;index(index.row(), columnIdx); value = QSqlQueryModel::data(modelIndex, Qt::DisplayRole); } return value; } </code></pre> <p><strong>UPD</strong> I understood that the problem is in <code>data</code> method's quantifier const, if I remove it everything is ok with QTableView, but I cant get data from model with gml's listviews. I see only one solution - replace interition from QSqlTableModel with aggregation it, but maybe someone knows better solution?</p>
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