[solved] XmlListModel problem

deimos

Hi,

I can't get this model to work:

@XmlListModel {
id: xmlModel
source: "http://gdata.youtube.com/schemas/2007/categories.cat"
query: "/app:categories/atom:category"

    namespaceDeclarations: "declare default element namespace 'http://www.w3.org/2005/Atom'; \
                declare namespace yt='http://gdata.youtube.com/schemas/2007';"

    XmlRole { name: "term";  query: "yt:@term/string()" }
    XmlRole { name: "label"; query: "yt:@label/string()" }

}@

the xml contains:

@<?xml version='1.0' encoding='utf-8'?>
<app:categories xmlns:app='http://www.w3.org/2007/app'
xmlns:atom='http://www.w3.org/2005/Atom'
xmlns:yt='http://gdata.youtube.com/schemas/2007' fixed='yes'
scheme='http://gdata.youtube.com/schemas/2007/categories.cat'>
<atom:category term='Film' label='Film & Animation' xml:lang='en-US'>
<yt:assignable />
<yt:browsable regions='AR ... ZA' />
</atom:category>
[...]@

I don't understand what I have to do. Any suggestions ?

thanks a lot
Marco

Alicemirror

Hi, deimos,

after the definition of the XmlListModel based on the XMLS file, did you created also the other components? Do you to show this file in a list ?

It should be defined the delegate and the list...

deimos

Hi Alicemirror,

thanks for the reply.
I tried to learn XQuery all the night, but just for luck I got what I wanted ;)
Yes I use the XmlListModel as a model in a GridView. Here the working code:

@Rectangle {
id: categoryButtons

XmlListModel {
    id: xmlModel
    source: "http://gdata.youtube.com/schemas/2007/categories.cat"
    query: "/categories/atom:category"

    namespaceDeclarations: "declare default element namespace 'http://www.w3.org/2007/app';"+
    "declare namespace atom='http://www.w3.org/2005/Atom';"+
    "declare namespace yt='http://gdata.youtube.com/schemas/2007';"

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

GridView {
    id: buttonsGridView
    model: xmlModel
    delegate: MDcomboButton {
        width: 100
        height: 50
        text: label+" - "+term
    }

    cellWidth: parent.width/8
    cellHeight: cellWidth/2
    width: parent.width
    height: parent.height
}

}@

but I still don't understand the query statement: why it has not the "app:" beside "categories" ? I should learn more about these :)

thanks again

Alicemirror

Hi Deimos,

bq. but I still don’t understand the query statement: why it has not the “app:” beside “categories” ? I should learn more about these :)

What does it means ? I tried to understand it without results :)

Alicemirror

AAaaaahhhhhh :-(

Sorry, now I see. It is in your xml.

Well, if it can help you, everytime I see a new "dialect" of the xml I became crazy to understand what it means.

I think that this is a useful link to understand exactly what does means your xml file: http://www.w3.org/standards/xml/

Advice: keep it in your bookmarks :)

deimos

bq. everytime I see a new “dialect” of the xml I became crazy to understand what it means.

Exactly my feeling :)
thanks for that link... bookmarked

Alicemirror

Yep. It maybe a good idea to post a wiki page with a simplified but useful version of the most frequent cases of how the xml can be expressed...