[Qt-qml] Accessing a QAbstractItemModel in QML outside a view

[martin.jones at nokia.com]

Right now if you want to access data in your model in script, you will need to add methods to your model to allow that.

For the specific case of showing data from the currentItem, you can expose the model data, e.g.

ListView {
    Id: list
    delegate: Text {
        property variant data: model
        text: name
    }
}
Text { text: list.currentItem.data.name }

BR,
Martin.

> -----Original Message-----
> From: qt-qml-bounces at trolltech.com [mailto:qt-qml-bounces at trolltech.com] On
> Behalf Of ext Jan Ekholm
> Sent: Wednesday, 1 December 2010 4:55 PM
> To: qt-qml at trolltech.com
> Subject: [Qt-qml] Accessing a QAbstractItemModel in QML outside a view
> 
> 
> Hi,
> 
> The subject says it all, apart from the context. Accessing a QAIM in a view (such
> as
> a ListView) is all nicely documented and works as expected. However, how can I
> access
> the same exposed C++ model outside a view? In my case I want to show a list of
> data and
> next to the list have some Text/Image items with more information about the
> selected item
> in the view. Totally normal stuff.
> 
> Getting the index of the selected row is easy, the view gives me that. Getting the
> model
> instance is also easy, it's in the root context. However, getting data out of the
> model seems
> to be impossible. I've tried all kinds of ways to access the data but none works.
> However, if
> I look here:
> 
> http://doc.trolltech.com/4.7/qdeclarativemodels.html#accessing-views-and-models-
> from-delegates
> 
> it's seems that delegates can even write data to a model. This gives a somewhat
> perverse
> situation where you can inside delegates read and write to models but outside a
> delegate
> you can't even read data.
> 
> So, this can't possibly be the case and there's something my thick brain just does
> not grok?
> I mean, models are one of the few ways you can get real data into a QML
> document, and not
> being able to actually access it makes it all feel somewhat silly. I can make extra
> methods
> on my subclassed QAIM on the C++ side to get data, but the point is that I should
> not have
> to do that, it ought to just work.
> 
> Someone please give me some RTFM resource.
> 
> Best regards,
>     Jan Ekholm
> 
> --
> Jan Ekholm
> jan.ekholm at smultron.net
> 
> 
> 
> 
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