Switch (and checkboxes) Not Following data model values

JrDeskJockey

Hello. I am baffled by this. I created a super basic Qt Quick app as an example. I have a basic ListModel, ListView, and a Switch in the delegate. I added "All On" and "All Off" buttons. Clicking these buttons I can loop through the data model and easily flip all Switches to the checked position, whether true or false. The switches flip fine, back and forth. Here's the catch...
If I go over and manually click one Switch to toggle it on and then back off, suddenly using my "All On" or "All Off" buttons begin ignoring that particular Switch. The others that I haven't touched still follow the actions of the button clicks, but those particular switches that I manually clicked either on or off are suddenly ignored by my javascript loop that edits the data model.

Any ideas?

import QtQuick 2.9
import QtQuick.Controls 1.4
import QtQuick.Window 2.2

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

    ListModel {
        id: boringModel
        ListElement{
            name: "Bob"
            mySwitchEnabled: false
        }
        ListElement{
            name: "Joe"
            mySwitchEnabled: false
        }
        ListElement{
            name: "Billy"
            mySwitchEnabled: false
        }
    }

    Column {
        id: btnCol
        x: 0
        y: 0
        height: parent.height
        width: 100
        Button {
            id: btnOn
            anchors.left: parent.left
            text: "All On"
            width: parent.width
            height: 20
            onClicked: {
                console.log('clicked all on');
                var myCount = boringModel.rowCount();
                for (var i = 0; i < myCount; i++) {
                    var aListElement = boringModel.get(i);
                    aListElement.mySwitchEnabled = true;
                }
            }
        }
        Button {
            id: btnOff
            anchors.left: parent.left
            text: "All Off"
            width: parent.width
            height: 20
            onClicked: {
                console.log('clicked all off');
                var myCount = boringModel.rowCount();
                for (var i = 0; i < myCount; i++) {
                    var aListElement = boringModel.get(i);
                    aListElement.mySwitchEnabled = false;
                }
            }
        }
    }

    ListView {
        id: switchView
        anchors.right: parent.right
        height: parent.height
        width: 200
        model: boringModel
        delegate: Rectangle {
            width: parent.width
            height: 30
            color: "#f2f2f2"
            Text {
                id: myLabel
                text: name
                anchors.fill: parent
            }
            Switch {
                id: mySwitch
                anchors.right: parent.right
                checked: mySwitchEnabled
                height: parent.height
                onClicked: {
                    console.log('clicked');
                }
            }
        }
    }
}

6thC

Any reason for Controls v1?

This seems to be working fine here for me... what's the symptoms in the model you are speaking of? Visually everything works as expected / intuitive feel to me.

I can toggle one an alternate value and then reset using the all's...

The difference I have is:
import QtQuick 2.10
import QtQuick.Controls 2.3
//import QtQuick.Controls 1.4

JrDeskJockey

@6thC How interesting. I updated to 2.3 and works fine. I guess I'll just chalk it up to a bug in an earlier version. Thanks!