How does the Append method add attributes to the ListModel?

mirro

fruitModel.append({ "name": "Apple", "description": "Core"})

ListModel {
    id: fruitModel

    ListElement {
        name: "Apple"
        attributes: [
            ListElement { description: "Core" },
        ]
    }
}

Allon

@mirro Sorry read the documentation too quickly.

To answer your question, you forgot the " around attributes and you forgot the : to tell that the first word is a property, then you forgot the brackets to tell that it is an array.
{ "name": "Apple", "attributes": [{ description: "table" }]}
instead of
{"name": "Apple", attributes{"description": "Core"}

Here is a code to illustrate it:

import QtQuick 2.12
import QtQuick.Window 2.12
import QtQuick.Controls 2.12

Window {
    visible: true
    width: 640
    height: 480
    title: qsTr("Hello World")


    ListModel {
    id: fruitModel

        ListElement {
            name: "Apple"
            attributes: [
                ListElement { description: "Core" }
            ]
        }
    }

    Button {
        id: btn
        onClicked: {
            fruitModel.append({ "name": "Apple", "attributes": [{ description: "table" }]})
            var keysList = JSON.stringify(fruitModel)
               console.log(keysList)


            console.log(JSON.stringify(fruitModel))
        }
    }

    ListView {
        width: 180; height: 200

        anchors.top: btn.bottom

        model: fruitModel
        delegate: Text {
            text: name + ": " + attributes.get(0).description
        }
    }
}

Regards,

Allon

What is exactly your question?
Regards,

mirro

@Allon What is wrong with the following QML code syntax?

fruitModel.append({ "name": "Apple", attributes{"description": "Core"}})
ListModel {
id: fruitModel

ListElement {
    name: "Apple"
    attributes: [
        ListElement { description: "Core" },
    ]
}

}

Allon

There is no append() function for ListModel

https://doc.qt.io/qt-5/qml-qtqml-models-listmodel.html

mirro

@Allon

https://doc.qt.io/qt-5/qml-qtqml-models-listmodel.html
Methods
append(dict)
clear()
object get(index)
insert(index, jsobject dict)
move(from, int to, int n)
remove(index, int count = 1)
set(index, jsobject dict)
setProperty(index, string property, variant value)
sync()

Allon

@mirro Sorry read the documentation too quickly.

To answer your question, you forgot the " around attributes and you forgot the : to tell that the first word is a property, then you forgot the brackets to tell that it is an array.
{ "name": "Apple", "attributes": [{ description: "table" }]}
instead of
{"name": "Apple", attributes{"description": "Core"}

Here is a code to illustrate it:

import QtQuick 2.12
import QtQuick.Window 2.12
import QtQuick.Controls 2.12

Window {
    visible: true
    width: 640
    height: 480
    title: qsTr("Hello World")


    ListModel {
    id: fruitModel

        ListElement {
            name: "Apple"
            attributes: [
                ListElement { description: "Core" }
            ]
        }
    }

    Button {
        id: btn
        onClicked: {
            fruitModel.append({ "name": "Apple", "attributes": [{ description: "table" }]})
            var keysList = JSON.stringify(fruitModel)
               console.log(keysList)


            console.log(JSON.stringify(fruitModel))
        }
    }

    ListView {
        width: 180; height: 200

        anchors.top: btn.bottom

        model: fruitModel
        delegate: Text {
            text: name + ": " + attributes.get(0).description
        }
    }
}

Regards,