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Saving ListModel content to a file using JSON.stringify() or an other solution



  • Hi,
    I want to be able to save the content of a ListModel in a file in order to retrieve it.
    I have been able to do it with a not nested ListModel using JSON.stringify().

    However my ListModel contains nested data

    Here is a simplified version of it;

    import QtQuick 2.12
    import QtQuick.Window 2.12
    
    Window {
        visible: true
        width: 640
        height: 480
        title: qsTr("Hello World")
    
        ListModel {
            id: fruitModel
    
            ListElement {
                name: "Apple"
                cost: 2.45
                attributes: [
                    ListElement { description: "Core" },
                    ListElement { description: "Deciduous" }
                ]
            }
            ListElement {
                name: "Orange"
                cost: 3.25
                attributes: [
                    ListElement { description: "Citrus" }
                ]
            }
            ListElement {
                name: "Banana"
                cost: 1.95
                attributes: [
                    ListElement { description: "Tropical" },
                    ListElement { description: "Seedless" }
                ]
            }
        }
    
        Component.onCompleted: console.log(JSON.stringify(fruitModel.get(0), ['name', 'cost', 'attributes', 'description']))
    }
    

    Output for the first element gives:
    {"attributes":{"objectName":"","count":2,"dynamicRoles":false},"cost":2.45,"name":"Apple"}

    JSON.stringify displays nested objects and not their content.

    Is there an other way to use JSON.stringify() to overcome this problem?
    If not what could I do?

    Thanks in advance,

    Emmanuel


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