CODEWITHSUNDEEP
xmlqtqml
gerion
gerion

Reputation: 365

QML XmlListModel: Query nodes with attributes

I'm trying to make a small RSS application with QML and want to query the Tagesschau atom feed. It basically looks like:

<?xml version="1.0" encoding="UTF-8" ?>
<?xml-stylesheet href="/resources/xsl/atom_xsl.jsp" type="text/xsl"?>
<feed xmlns="http://www.w3.org/2005/Atom">
    <entry>
        <title>Lufthansa setzt Flüge nach Kairo aus</title>
    </entry>
    <entry>
        <title>Telefonat zwischen Hunt und Sarif: Das Misstrauen bleibt</title>
    </entry>
</feed>

The corresponding QML XmlListModel I have defined is this:

import QtQuick.XmlListModel 2.0

Item {
    XmlListModel {
        id: xmlfeed
        source: "http://www.tagesschau.de/xml/atom/"

        query: "/feed/entry"

        XmlRole { name: "title"; query: "title/string()" }
    }

    Component {
        id: feeditem

        Label {
            text: title
        }
    }

    ListView {
        id: feedlist
        model: xmlfeed
        clip: true

        anchors { fill: parent; margins: 2 }

        delegate: feeditem
    }
}

However, this does not work. QML does not find any list items. I found out that the crucial part is the line:

<feed xmlns="http://www.w3.org/2005/Atom">

If I manually download the file and edit this line into just

<feed>

QML can parse it. Do you know, how to fix this? Do I need to improve my query string or is this a bug in QML?

Upvotes: 1

Views: 627

Answers (1)

folibis
folibis

Reputation: 12864

XPath itself doesn't have a way to bind a namespace prefix with a namespace. You can declare the namespace using XmlListModel.namespaceDeclarations. In your case that should look like the code in the example from the link above:

XmlListModel {
        id: xmlfeed
        source: "http://www.tagesschau.de/xml/atom/"
        namespaceDeclarations: "declare default element namespace 'http://www.w3.org/2005/Atom';"
        query: "/feed/entry"
        XmlRole { name: "title"; query: "title/string()" }
}

Upvotes: 1

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