[SOLVED]QVariantList to QML

patrikd

Hi all,
I want to pass a list from C++ to a repeater in QML. To do so I created a methode converting my list to a qvariant list:

    Q_INVOKABLE QVariantList getPagesForChapter(int chapterID);

QVariantList CPagesList::getPagesForChapter(int chapterID){
    QList<QVariant>* pages = new QList<QVariant>();
    foreach (CPage* page, m_pagesCleared) {
        if (page->chapterID() == chapterID){
            pages->append(QVariant::fromValue(page));
        }
    }
    qDebug() << "pages for chapter: " << chapterID << " count: " << pages->size();
    return *pages;
}

Within my qml:

                            Repeater {
                                id: pagesPortraitList
                                model: pages.getPagesForChapter(currentPage.chapterID)
                                delegate: Item {
                                    id: singleItem
                                    width: portraitPagesColumn.width
                                    height: portraitPagesColumn.height / 3

                                    Image {
                                        id: mainViewImageTop
                                        source: "qrc:/images/images/data/"  + model.picture
                                    }

Doing this I get following error:
Unable to assign [undefined] to QString
What am I doing wrong? Or what is the best way to pass a changing list to qml (without storing the list in a field of my class and than using QMLListProperty)
thx,
patrik

beemaster

Use QStringList instead of QVariantList

pages->append(page->getPicture());

Use modelData role instead of model

Image {
    id: mainViewImageTop
    source: "qrc:/images/images/data/"  + modelData
}

Read more here http://doc.qt.io/qt-5/qtquick-modelviewsdata-cppmodels.html

patrikd

Hi Beemaster,
I can't, the picture is only a part of more data i use from the class in the delegate.
thx,
patrik

patrikd

hi beemaster,
the tip with the modelData helped.
using:
model.modelData.picture
instead of:
model.picture
worked.
thx,
patrik