Johan nailed it... here are your bad lines:
System.out.println("+++++++"+
item.getModelObject().getClass().getName());
final QuestionAndAnswer qanda = (QuestionAndAnswer)
item.getModelObject();
setModel(new CompoundPropertyModel(qanda));
That should just be changed to:
item.setModel(new CompoundPropertyModel(item.getModel());
if that's what you want.
--
Jeremy Thomerson
http://www.wickettraining.com
On Thu, Oct 23, 2008 at 6:13 AM, Johan Compagner <[EMAIL PROTECTED]>wrote:
> What are you doing there?
> You get a model object from the listitem
> And then you are calling setmodel(compound) on the listview itself?
> Why is that then you are changing the model of the listview inside the
> loop that it goes over them creating listitems!
>
> On 10/23/08, pieter claassen <[EMAIL PROTECTED]> wrote:
> > I am getting a classcast exception in ListView that is stumping me.
> >
> > This is the error message (top few lines)
> >
> > WicketMessage: Error attaching this container for rendering:
> > [MarkupContainer [Component id = questioneditform]]
> >
> > Root cause:
> >
> > java.lang.ClassCastException: com.musmato.model.QuestionAndAnswer
> > at
> > org
> > .apache
> > .wicket.markup.html.list.ListItemModel.getObject(ListItemModel.java:55)
> > at org.apache.wicket.Component.getModelObject(Component.java:1558)
> > at com.musmato.wicket.pages.templates.TemplateEditPage$QuestionEditForm
> > $1.populateItem(TemplateEditPage.java:93)
> >
> >
> > This is the code that generates my ListItems:
> >
> > ListView questions = new ListView("questions",
> template
> > .getQuestions()) {
> >
> >
> > @Override
> > protected void populateItem(ListItem item)
> {
> > final QuestionAndAnswer qanda =
> (QuestionAndAnswer) item
> > .getModelObject();
> > setModel(new
> CompoundPropertyModel(qanda));
> >
> >
> >
> > I know for a fact that template.getQuestions() produces an ArrayList.
> >
> > The arraylist works when there is only 1 item in it but when I have
> > more than 1 item, it fails with the ClassCastException. Is this a
> > wicket problem or am I doing something wrong?
> >
> > Regards,
> > Pieter
> > pieter claassen
> > [EMAIL PROTECTED]
> >
> >
> >
> >
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> >
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