QML object and nest object onCompleted order - qt

Question

I have a QML file which contains an Item, the Item contains a object:
QtObject {
id: something
Component.onCompleted: {
console.log("A");
}
}
At the file Item I also have:
Component.onCompleted: {
console.log("B");
}
What I see in the Application Output is
B
A
What I want is for A to be processed first, is there anyway to do this or do I have to change use a function in the child object and call it from the onCompleted of the parent?

Answer 1

Well, AFAIK you can't change the "completed" order. But you could control when the QtObject loads. For example:
Item {
property QtObject something: null
property Component objectComponent: QtObject {
objectName: "something"
Component.onCompleted: console.log("A");
}
Component.onCompleted: {
something = objectComponent.createObject(this);
console.log("B", something);
}
}
qml: A
qml: B QObject(0x351d750, "something")
There's also the Loader type, which basically does the createObject() for you, though it's meant more for loading visual components on-demand.
Also the "something" QtObject could be in an external file, of course.
ADDED: Apparently this also works and loads in the desired order, though I'm not sure I'd prefer it myself (but it's more "declarative" I suppose :).
Item {
property QtObject something: objectComponent.createObject(this);
property Component objectComponent: QtObject {
objectName: "something"
Component.onCompleted: console.log("A");
}
Component.onCompleted: console.log("B", something);
}

Answer 2

As you can read from the official documentation (https://doc.qt.io/qt-5/qml-qtqml-component.html#completed-signal), "the order of running the onCompleted handlers is undefined". So you can not trust in your console output for know the object creation order.
If you want load components in a specific order, you can use the Loader item.