Re: Ajaxifying FormComponentPanel

[Linda van der Pal <lv...@heritageagenturen.nl>]

I still haven't found the solution to this problem, so I've made 
quickstart for it. Since I don't think it's a bug in Wicket, I've 
attached it to this message instead of creating a JIRA.

Regards,
Linda

Linda van der Pal wrote:
> When I debug the app, I can see that getObject() is being called for 
> subgenrefield, only selectedGenre == null. I also put a breakpoint in 
> convertInput() inside the GenreFieldSwithPanel, but it doesn't pass 
> it. Shouldn't it use that to determine what the new value of the model 
> will be?
>
> Linda
>
> Linda van der Pal wrote:
>> That is in fact the type of behavior I am using. Here's a bit of the 
>> code:
>>
>>            // The subgenre-field
>>            IModel<List<Subgenre>> subgenreModel = new 
>> AbstractReadOnlyModel<List<Subgenre>>() {
>>                @Override
>>                public List<Subgenre> getObject() {
>>                    List<Subgenre> subgenres = new ArrayList<Subgenre>();
>>                    if (selectedGenre != null){
>>                        // Fetch the subgenres based on selectedGenre
>>                         subgenres = ...
>>                    }
>>                    return subgenres;
>>                }
>>            };
>>            final FieldSwitchPanel subgenrefield = new 
>> SubgenreFieldSwitchPanel("subgenre", subgenreModel);
>>            subgenrefield.setOutputMarkupId(true);
>>            subgenrefield.setOutputMarkupPlaceholderTag(true);
>>            form.add(subgenrefield);
>>                                // The genre-field
>>            // fetch the genres
>>            List<DomainObject> genres = ...
>>                      final FieldSwitchPanel genrefield = new 
>> GenreFieldSwitchPanel("genre", genres, new 
>> PropertyModel<DomainObject>(this, "selectedGenre"));
>>            genrefield.add(new 
>> AjaxFormComponentUpdatingBehavior("onchange") {
>>                @Override
>>                protected void onUpdate(AjaxRequestTarget target) {
>>                    target.addComponent(subgenrefield);
>>                }
>>            });
>>            genrefield.setOutputMarkupPlaceholderTag(true);
>>            form.add(genrefield);
>>
>> The problem is that selectedGenre stays null. So I'm looking for the 
>> cause of that. My guess is that it is because the model isn't 
>> updated. (I did implement convertInput() in GenreFieldSwitchPanel, 
>> which extends FormComponentPanel.)
>>
>> Linda
>>
>> jWeekend wrote:
>>> Linda,
>>>
>>> Take a look at AjaxFormComponentUpdatingBehavior.
>>>
>>> Regards - Cemal
>>> http://jWeekend.com jWeekend
>>>
>>> Linda van der Pal wrote:
>>>  
>>>> I have a FormComponentPanel that contains a TextField and a 
>>>> DropDownChoice. Of those two only one is visible at any moment. 
>>>> (The TextField is there for when the DropDownChoice doesn't offer 
>>>> the wanted result.) On the panel that contains the 
>>>> FormComponentPanel, I want another element to respond to any change 
>>>> in the FormComponentPanel (most importantly if the user selects 
>>>> something from the DropDownChoice). I have added ajax behavior to 
>>>> the component, but the model isn't updated, so when I debug the 
>>>> onChange method of the behavior, I find that the object in the 
>>>> model is null. How do I get it to update properly?
>>>>
>>>> Regards,
>>>> Linda van der Pal
>>>>
>>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
> For additional commands, e-mail: users-help@wicket.apache.org
> ------------------------------------------------------------------------
>
>
> No virus found in this incoming message.
> Checked by AVG - www.avg.com 
> Version: 8.5.278 / Virus Database: 270.11.9/1991 - Release Date: 03/09/09 07:14:00
>
>