Hi,
when using
pModel = new ListModel<P>(){
@Override
public List<P> getObject() {
return someService.calculate();
}
};
I experience that in this case #someService.calculate() is called several times
consecutively when loading the page. Why is this the case?
Setting the model in the Ajax Link onclick method as
pModel.setObject(someService.calculate()); seems to work.
Chris
> Am 15.02.2015 um 10:40 schrieb Francois Meillet <[email protected]>:
>
> 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!
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: [email protected]
>> For additional commands, e-mail: [email protected]
>>
>
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
