Converting object to string

[Babalas]

What do I need to provide to be able to convert my object to a string in something like console.debug? At the moment, printing out my QObjectList gives me @KeyValue(0x196bdc0),KeyValue(0x18f8d40),KeyValue(0x18f90e0),KeyValue(0x1955d40)@
I'd like to convert that to
@KeyValue(0x196bdc0, Key="A", Value=1),KeyValue(0x18f8d40, Key="B", Value=2),KeyValue(0x18f90e0, Key="C", Value=3),KeyValue(0x1955d40, Key="D", Value=4)@

[sierdzio]

In QML and C++, I often add ::toString() method to various classes to make them print well and easy. You can probably do the same, although it's hard to be exact without seeing your code.

[Babalas]

So is that an explicit call?
In my example above I have a QObjectList model of KeyValue classes. Basically just pairs. The output I got was by doing
@console.debug(model)@

I'm guessing to produce something similar I'd have to loop and print item.toString then.

Or to go off on a tangent I'm wondering if the javascript interpreter has some default stringify method that can be overridden similar to Rubys "inspect":http://ruby-doc.org/core-2.1.1/Object.html#method-i-inspect method

[sierdzio]

I'm no expert on JavaScript, sorry.

Yes, your thinking on .tsoString() is correct.

[Xander84]

If you need the toString-method only for quick debugging in QML you can use a JS loop to go though the object and print all properties with their values in most cases. or write a special function if you want to print only some properties of course.

It sometimes sucks that JS only prints [Object object] for objects by default :D
here my solution:
@
// register this function once
Object.prototype.print = function() {
for (var p in this) {
var v = this[p]
if (typeof v === "object")
v.print()
else if (typeof v !== "function")
console.log(p, v)
}
}

// instead of console.log(obj) use
obj.print()
@
that will recursively print all properties with their values to the console. That is just a simple JS function, you can modify that to your liking and print what you want. :)

of course you can also write a c++ function and call it from QML if you prefer that.

[lack]

Best method for me:

console.debug(JSON.stringify(yourObject));

JSON global object is part of ES5(EcmaScript 5), it's in core JS functionality.

[Vincent007]

Is there an easy way to print QML object by JavaScript?

The following code does not work, and no response after being executed.

@
import QtQuick 2.1
import QtQuick.Controls 1.0

ApplicationWindow {
id: root
visible: true
width: 640
height: 480
title: qsTr("Hello World")

menuBar: MenuBar {
    Menu {
        title: qsTr("File")
        MenuItem {
            text: qsTr("Exit")
            onTriggered: Qt.quit();
        }
    }
}

Text {
    id: mytext
    text: qsTr("Hello World")
    anchors.centerIn: parent
}

Component.onCompleted: {
    console.debug(JSON.stringify(mytext))
}

}
@

[lack]

Happened here too. Probably you should submit a bug report.
Doesn't happen to cpp exported object or js object