CODEWITHSUNDEEP
xmlqtqml
Ale
Ale

Reputation: 305

Qml XmlListModel with multiple SOURCES

I do have a bunch of xml files named "config_1.xml", "config_2.xml", "config_3.xml", and so on.

Basically, I need to loop from first one to last one, appending in the SAME XmlListModel all the "id" that I find at the query context/info/parameters in each xml file.

So, once the reading is completed, I will have the whole list of id(s).

I tried with:

property int myIterator: 1

Repeater {
    model: 10 //10 is just an example. I have this number in my code by other functions.
    XmlListModel {
        id: myModel
        source: "qrc:/ConfigFiles/config_" + myIterator + ".xml" // <---- THIS IS THE PROPERTY I NEED TO PARAMETRIZE!!!
        query: "context/info/parameters"
        XmlRole { name: "myId"; query: "id/number()" }
        onCountChanged: { ++myIterator; }
    }
}

onMyIteratorChanged: {
    if (myIterator> 10)
        for(var i = 0; i<myModel.count; i++) // myModel.count should be equal to 10!!!
            console.log("id: " + myModel.get(i).myId);
}

However, with this code the application crashes. How can I fix it?

I also considered the idea of transferring all the information stored in myModel at each iteration into a ListModel (in which the appen() is easy by documentation). But I still don't know how to call XmlListModel n times...

Thank you!! :-)

Upvotes: 1

Views: 693

Answers (1)

GrecKo
GrecKo

Reputation: 7150

To create multiple XmlListModel based on a model, you can't use a Repeater since XmlListModel is not an Item. You have to use Instantiator for plain QtObject.

Similarly to a Repeater you can access the data of a model in the delegate with modelData (or index, it's the same here since we are using an integer as a model).

If you want to iterate over all your model you can do so with count and objectAt() :

Instantiator {
    id: instantiator
    model: 10
    delegate: XmlListModel {
        source: "qrc:/ConfigFiles/config_" + (modelData + 1) + ".xml"
        query: "context/info/parameters"
        XmlRole { name: "myId"; query: "id/number()" }
    }
    Component.onCompleted: {
        for (var i = 0; i < instantiator.count; i++) {
            var xmlModel = instantiator.objectAt(i);
            for (var j = 0; i < xmlModel.count; j++)
                console.log("id: " + xmlModel.get(j).myId);
    }
}

Upvotes: 2

Related Questions