Is it possible to dynamically populate a ListView within a GridView ?

[andrioli.n]

In our application, we need to display a GridView wich contains some elements of custom type OverviewEntry and in these elements, we have a QList of element of custom type ChannelEntry.

Some code is more usefull than a long description so, please found the related code (simplified, of course) :

//Main.cpp
 
...
m_viewer = new QQuickView();
...
QList<ChannelEntry *> channels;
for (int i=0; i<5; i++) {
    for (int j=0; j<4; j++) {
        channels.append(new ChannelEntry("foo"));
    }
    m_overviewList.append(new OverviewEntry("bar", channels));
}
...
QQmlContext *ctxt = m_viewer->rootContext();
ctxt->setContextProperty("overviewModel", QVariant::fromValue(m_overviewList));
...

//Main.cpp

...
m_viewer = new QQuickView();
...
QList<ChannelEntry *> channels;
for (int i=0; i<5; i++) {
    for (int j=0; j<4; j++) {
        channels.append(new ChannelEntry("foo"));
    }
    m_overviewList.append(new OverviewEntry("bar", channels));
}
...
QQmlContext *ctxt = m_viewer->rootContext();
ctxt->setContextProperty("overviewModel", QVariant::fromValue(m_overviewList));
...

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//OverviewEntry.h
 
class OverviewEntry : public QObject
{
    Q_OBJECT
    Q_PROPERTY(QString name READ name WRITE setName NOTIFY nameChanged)
...
    Q_PROPERTY(QList<ChannelEntry> channels READ channels WRITE setChannels NOTIFY channelsChanged)
...
QString m_name;
QList<ChannelEntry *> m_channels;
};
 
Q_DECLARE_METATYPE(QList<ChannelEntry>)

//OverviewEntry.h

class OverviewEntry : public QObject
{
    Q_OBJECT
    Q_PROPERTY(QString name READ name WRITE setName NOTIFY nameChanged)
...
    Q_PROPERTY(QList<ChannelEntry> channels READ channels WRITE setChannels NOTIFY channelsChanged)
...
QString m_name;
QList<ChannelEntry *> m_channels;
};

Q_DECLARE_METATYPE(QList<ChannelEntry>)

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//ChannelEntry.h
 
class ChannelEntry : public QObject
{
    Q_OBJECT
    Q_PROPERTY(QString name READ name WRITE setName NOTIFY nameChanged)
...
QString m_name;
};

//ChannelEntry.h

class ChannelEntry : public QObject
{
    Q_OBJECT
    Q_PROPERTY(QString name READ name WRITE setName NOTIFY nameChanged)
...
QString m_name;
};

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//Main.qml
 
...
GridView {
    model: overviewModel
    delegate : OverviewEntry {}
}
...

//Main.qml

...
GridView {
    model: overviewModel
    delegate : OverviewEntry {}
}
...

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//OverviewEntry.qml
 
...
Text{
    text: modelData.name
}
...
ListView {
    model: modelData.channels
    delegate : ChannelEntry {}
}
...

//OverviewEntry.qml

...
Text{
    text: modelData.name
}
...
ListView {
    model: modelData.channels
    delegate : ChannelEntry {}
}
...

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//ChannelEntry.qml
 
...
Text{
    text: modelData.name
}
...

//ChannelEntry.qml

...
Text{
    text: modelData.name
}
...

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My GridView is well populated but my ListView remains empty... Even after 2-3 days of trying different approach...

So what am I missing ? Anyone has a clue, please ?