Hi Chris,
The ListModel keeps a reference on the model created at the first occurence of
that line
pModel = new ListModel<P>(someService.caculate());
The simplest thing you could do is to reset the listpanel's model,
but this is not a good practice.
listPanel.setDefaultModel(model);
add(new AjaxFallbackLink("link") {
@Override
public void onClick(AjaxRequestTarget target) {
pModel = new ListModel<P>(someService.caculate());
listPanel.setDefaultModel(pModel);
target.add(listPanel);
}
});
Using a specific model is much better
For example, using the int property flag we can do
pModel = new Model<String>() {
@Override
public String getObject() {
return "flag_" + flag ;
}
};
final Panel listPanel = new ListPanel("itemList", pModel);
add(listPanel);
add(new AjaxFallbackLink("link") {
@Override
public void onClick(AjaxRequestTarget target) {
flag++;
target.add(listPanel);
}
});
Have a look at https://wicket.apache.org/guide/guide/single.html#modelsforms
François Meillet
Le 14 févr. 2015 à 22:23, Chris <[email protected]> a écrit :
> Hi all,
>
> I would like to update a list model when the user clicks on a certain link.
> However, when the listPanel is rendered after clicking on the link, the model
> seems not to be updated and still contains the old values.
>
> How to fix this?
>
> PAGE:
>
> IModel<List<P>> pModel;
>
> public SomePage() {
>
> pModel = new ListModel<P>(someService.caculate());
>
> final Panel listPanel = new ListPanel("itemList", pModel);
> add(listPanel);
>
> add(new AjaxFallbackLink("link") {
> @Override
> public void onClick(AjaxRequestTarget target) {
> pModel = new ListModel<P>(someService.caculate());
> target.add(listPanel);
> }
> });
> }
>
> Thanks!
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