Feeding data from QSortFilterProxyModel to a BarSeries

[A Former User]

Hi,

I am trying to show data from a QSortFilterProxyModel (C++ side) in a BarSeries (QML side) but struggle on the general approach.

Can I give my model to the BarSeries in any way or do I need to write some Q_INVOKABLE methods on the C++ side to get the data?

Regards

[A Former User]

OK, now I did it like this:
Create a Q_INVOKABLE that collects data from a column in a QVarianList and call that from the QML side.

C++

QVariantList ProxyModel::values(int role) const
{
    QVariantList values;
    int rows = rowCount();
    for (int row = 0; row < rows; ++row) {
        QModelIndex idx = index(row, 0);
        values.append(idx.data(role));
    }
    return values;
}

QML

ChartView {
    title: "Consumption"
    anchors.fill: parent
    antialiasing: true

    BarSeries {
        id: mySeries
        axisX: BarCategoryAxis { categories: myModel.values(258) }
        BarSet { label: qsTr("Voltage"); values: myModel.values(259) }
        BarSet { label: qsTr("Current"); values: myModel.values(260) }
        BarSet { label: qsTr("Power"); values: myModel.values(261) }
        BarSet { label: qsTr("Energy"); values: myModel.values(262) }
    }
}

...with those role numbers being the ones I defined in roleNames().