Problem with setData from QML using QAbstractListModel

[tanmanh0707]

Hello,

I'm using Qt Creator 4.7.1. I want to create a list model which can be integrated at QML layer. I used QAbstractListModel followed example at https://www.ics.com/files/qtdocs/declarative-modelviews-abstractitemmodel.html

Additional, I want my list model to be editable. The instruction can be find at https://doc.qt.io/archives/qt-4.7/qabstractitemmodel.html#setData

I have implemented setData() and flags() function, but when I edit my list model at QML layer, all I have is a warning that "Error: Cannot assign to read-only property "type""

My QML code is simple like that:

ListView {
    width: 200; height: 250
    anchors.fill: parent
    
    model: myModel
    delegate: Rectangle
    {
    width: 200
    height: 50
    Text { text: "Animal: " + type + ", " + size }
    MouseArea {
        anchors.fill: parent
        onClicked: {
            type = "Fish"
        }
    }
}
}

But when I used my code in Qt Creator 5.4 (with some modification such as roleName()), the function setData have worked successfully.

Please help me. Thank you.