Component.initModel() calls getParent() and it returns null. I guess
that makes sense because the child hasn't been added to the parent
yet. That happens after the child constructor has finished.
So how would I do this?
Tauren
On 7/9/07, Igor Vaynberg <[EMAIL PROTECTED]> wrote:
> On 7/9/07, Tauren Mills <[EMAIL PROTECTED]> wrote:
>
> > I'm confused on how to access a CompoundPropertyModel from within a
> > child Panel. I set a CompountPropertyModel in a parent panel. But
> > doing a getModel() in the child panel returns null. I thought that
> > wicket would hunt back up the component tree to find an appropriate
> > CompountPropertyModel. How should I do this?
> >
> > Here is the parent, where I set the CPM:
> >
> > public class RatingDisplayPanel extends Panel {
> > public RatingDisplayPanel(String id, RatingsModel ratings) {
> > super(id);
> > setModel(new
> CompoundPropertyModel(ratings));
> > add(new StarDisplay("facility", RatingBean.STARS));
> > }
> > }
> >
> > Here is the child, where I do a getModel() and it returns null:
> >
> > public class StarDisplay extends Panel {
> >
> > private int width = 0;
> >
> > public StarDisplay(String id, List choices) {
> > super(id);
> > int size = 0;
> > if (choices != null) {
> > size = choices.size();
> > if (getModel() != null) {
> > index =
> choices.indexOf(getModel().getObject(this));
> > }
> > this.width = (index + 1)*100/size;
> > WebMarkupContainer on = new
> WebMarkupContainer("on");
> > on.add(new AttributeModifier("style", true, new
> Model() {
> > public Object
> getObject(final Component component) {
> > return "width:
> "+width+"%";
> > }
> > }));
> > add(on);
> > }
> > }
> > }
> >
> > I have it working right now by passing the model like this, but I want
> > to simplify the code in my parent panel:
> >
> > add(new StarDisplay("facility", new PropertyModel(ratings,
> > "facility"), RatingBean.STARS));
> >
> > I thought perhaps I should use getNestedModel(), but it doesn't exist
> > in a panel. Any help is appreciated!
>
>
> seems like it should work, can you walk the code and see why getmodel()
> returns null?
>
> -igor
>
>
> > Tauren
> >
> >
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