xml base and relative query combination in qml

I have the following xml :

<response>
<id>...<开发者_开发百科;/id>
<category_id>...</category_id>
<name>...</name>
<detail>
    <resource>
        <label>...</label>
        <value>...</value>
    </resource>
    <resource>
        <label>...</label>
        <value>...</value>
    </resource>
</detail>
<price>...</price>
<currency>...</currency>
</response>

I need to get the id, name as well as label and value from one XmlListModel

I have the following code:

XmlListModel {
    id: model
    query:"/response"
    source:"xml source"

    XmlRole { name: "name"; query: "name/string()"  }
    XmlRole { name: "id"; query:"id/number()"  }
    XmlRole { name: "label"; query: "detail/resource/label/string()" }
    XmlRole { name: "value"; query:"detail/resource/value/string()" }
}

What is wrong with this code? Thanks.

The problem is, that the xpath query detail/resource/label/string() does not select exactly one node, because there are multiple resource nodes. If you don't need all resource nodes, you can select only the first one with detail/resource[1]/label/string().

If you need all resource nodes, you can use an additional XmlModel:

import QtQuick 1.0

Item {

    property string xmlData:
        "<response>
            <id>1234</id>
            <category_id>...</category_id>
            <name>The Name</name>
            <detail>
                <resource>
                    <label>Res1</label>
                    <value>1</value>
                </resource>
                <resource>
                    <label>Res2</label>
                    <value>2</value>
                </resource>
            </detail>
            <price>...</price>
            <currency>...</currency>
        </response>"

    // model for general data
    XmlListModel {
        id: model

        xml: xmlData

        query:"/response"

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

    // model for resource data
    XmlListModel {
        id: resModel

        xml: xmlData

        query: "/response/detail/resource"

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