Json document in a qml object

Cyrille de Brebisson

Hello,

I am new to Qt Quick, so please excuse my beginner question (I come from C++)...

I am trying to create a non visible component (QtObject) which will contain a number of information that my application needs. I am trying to do as much as I can in QML and not "drop back" to C++

This data is saved as a Json file and I wanted to create a wrapper around a JsonDocument to access the data.
Something around the lines of:
However, QML does not seem to like the JsonDocument "type". What would be the proper way to achieve what I want?

import QtQuick 2.0
QtObject {
property string jsonString: "{"a":"A whatever, run","b":"B fore something happens"}" // temporary to test
JsonDocument { is: src; source: String }
property string str1: src.a
property string str2: src.b
}

Thanks!

ODБOï

Cant help you with Json but this may interest you https://wiki.qt.io/Qml_Styling

Cyrille de Brebisson

Hello,

Cant help you with Json but this may interest you https://wiki.qt.io/Qml_Styling

Thanks, this article on Singleton was actually useful!

Cyrille

sneubert

Hi Cyrille,
the JavaScript Host Environment in QML provides the standard ECMAScript built-ins (http://doc.qt.io/qt-5/qtqml-javascript-hostenvironment.html).

There´s a JSON type you can use in javascript expression like
var jsonObj = JSON.parse(yourJsonString)
After parsing you can access the json objects for your example like jsonObj.a
If you really need a QObject wrapper, you could parse the json at Component.onCompleted event
and provide javascript functions to access your json objects.