Add function to individual XmlListModel items

Question

I am new to QML and Qt Quick and was wondering how I can add functions to each individual item in an XmlListModel.

XmlListModel {
  id: books
  source: "Books.xml"
  query: "/books"
  XmlRole { name: "price"; query: "@price/string()" }
}

Say the price is in cents and I want to multiply each price by a factor 100. In another programming language I would add a getPrice() function on the Book class but I don't have access to the individual elements here. I could add it to the XmlListModel with an index parameter but I feel it belongs to the individual book item, no?

Answer 1

In the code above you just defined model and roles to fetch data, not real data. But you can access data itself and data items particularly in delegate, for example:

ListView {
    id: listView
    anchors.fill: parent
    function getPrice(value) {
        return value * 100;
    }
    model: books
    delegate: Row {
        height: 30
        width: parent.width
        Text { text: listView.getPrice(price) }
    }
}