[SOLVED] Creating ListModels for Nested ListViews

[myQtQml]

The listed code with nested ListView works as expected. Here the ListModels are statically created. In my requirement, initially both the ListModels (rootModel & childModel) are empty. The list element details are there in a json file. The file is read in javascript and list elements are appended. For each rootModel element childModel would be different. rootModel can be created easily, but how to create dynamically changing childModel for all rootElement?

import QtQuick 2.2
import QtQuick.Window 2.1
import QtQuick.Layouts 1.1

Window {
    visible: true
    width: 360
    height: 360

    ListModel {
        id: rootModel

        ListElement { rootText: "root-1" }
        ListElement { rootText: "root-2" }
    }

    ListView {
        id: rootListView

        anchors.fill: parent
        model: rootModel
        delegate: rootDelegate
    }

    Component {
        id: rootDelegate

        Item {
            width: 360
            height: 70

            RowLayout {
                anchors.fill: parent
                Rectangle {
                    id: rect1
                    width: parent.width / 2
                    height: 20
                    color: "lightgray"
                    anchors.left: parent.left
                    Text {
                        id: text1
                        text: rootText
                    }
                }
                Rectangle {
                    id: rect2
                    width: parent.width / 2
                    height: 60
                    color: "lightblue"
                    anchors.right: parent.right

                    ListModel {
                        id: childModel

                        ListElement { childText: "child-1" }
                        ListElement { childText: "child-2" }
                        ListElement { childText: "child-3" }
                    }

                    ListView {
                        id: childListView
                        anchors.fill: parent

                        model: childModel
                        delegate: Text { text: childText }
                    }
                }
            }
        }
    }
}

Solved by creating array of list models and changing model of listView dynamically according to list view index.