Pass an array of objects to c++ from qml

[tham]

Trying to pass an array of objects to c++ from qml, but cannot find way to do it properly.

qml sites

function getCheckedAudioObject()
{
    var results = []
    for(var i = 0; i < checkSongIndex.length; ++i){
        var obj = audioModel.get(checkSongIndex[i]) //audioModel is a ListModel
        results.push(obj)            
    }

    return results
}

c++ api

Q_INVOKABLE void addAudioInformation(QVariantList const &audio_info)
{
    qDebug()<<__func__<<audio_info.size(); //print 4, as expected
    qDebug()<<__func__<<audio_info[0].typeName(); //print QObject*
    qDebug()<<__func__<<audio_info[0].toMap(); //print Map()
}

How could I get the data of qml object from c++ api?Thanks

[JKSH]

@tham said in Pass an array of objects to c++ from qml:

    qDebug()<<__func__<<audio_info[0].typeName(); //print QObject*

The element is a QObject*.

    qDebug()<<__func__<<audio_info[0].toMap(); //print Map()

You cannot convert a QObject* to a QMap.

First, what does qDebug() << audio_info[0]; print? Is it your own custom QObject? If so, you can add a conversion function to the object.

Otherwise, you can create a JavaScript object in QML and put this in your array. JavaScript objects can be treated as QVariantMap in C++:

var results = []
for(var i = 0; i < checkSongIndex.length; ++i){
    var qObj = audioModel.get(checkSongIndex[i])
    var jObj = {}
    jObj['property1'] = qObj.func1() // Your own function to extract data from the model's element
    jObj['property2'] = qObj.func2()
    results.push(jObj)
}

[tham]

@JKSH said in Pass an array of objects to c++ from qml:

Is it your own custom QObject?

No, it is ListModel of qml.

[JKSH]

@tham said in Pass an array of objects to c++ from qml:

@JKSH said in Pass an array of objects to c++ from qml:

Is it your own custom QObject?

No, it is ListModel of qml.

Then you must convert each audioModel element to a custom JavaScript object. Pass an array of your custom JavaScript objects to C++.