That's how the example at
http://wicketstuff.org/wicket13/compref/?wicket:bookmarkablePage=%3Aorg.apache.wicket.examples.compref.CheckGroupPage
shows it. I added an empty ArrayList as the model, and it works now.
Should I send a message to the bugs list to update the examples page above?
I did note that when you view the source of the example, it uses the empty
ArrayList approach I'm using now.
igor.vaynberg wrote:
>
> CheckGroup group = new CheckGroup("merchantCheckboxGroup", **model**);
>
> you are never setting the model you are passing in.
>
> -igor
>
> On Fri, May 23, 2008 at 12:09 AM, seanblaes <[EMAIL PROTECTED]> wrote:
>>
>> Hello all, I'm beating my head on the wall and not really sure what I'm
>> doing
>> wrong... :(
>>
>> I am attempting to use a CheckGroup to contain several choices - maybe
>> it's
>> even the wrong way to go about it. I followed the example on the Wicket
>> webpage, but it's not working for me.
>>
>> Here's my HTML:
>>
>> <input type="checkbox" name="filter_by_merchant" id="filter_by_merchant"
>> wicket:id="filterByMerchantCheckbox" value="1" onchange="var
>> l=$('optional_filter_by_merchant'); if (this.checked){l.show()} else
>> {l.hide()}"/>
>> <label for="filter_by_merchant">Merchant</label>
>>
>> <ul id="optional_filter_by_merchant" class="inline optional-indent">
>> <li wicket:id="merchants">
>> <input type="checkbox"
>> name="filter_by_merchant_rich_clicks"
>> id="filter_by_merchant_rich_clicks" wicket:id="merchantCheckboxComponent"
>> />
>> <label for="filter_by_merchant_rich_clicks"
>> wicket:id="merchantCheckboxLabel">Rich Clicks</label>
>> </li>
>> </ul>
>>
>>
>>
>> And I have a method to populate this section:
>>
>> private CheckGroup createMerchantFilterMerchantsCheckboxes(Model model) {
>> CheckGroup group = new CheckGroup("merchantCheckboxGroup");
>> ListView merchants = new ListView("merchants",
>> MerchantOption.loadOptions()) {
>> private static final long serialVersionUID = 1L;
>>
>> protected void populateItem(ListItem item) {
>> item.add(new Check("merchantCheckboxComponent"));
>> item.add(new Label("merchantCheckboxLabel", new
>> PropertyModel(item.getModel(), "value")));
>> }
>> };
>> group.add(merchants);
>>
>> return group;
>> }
>>
>>
>> When I call this method from my page class, it's pretty simple:
>>
>> ReportTypeOption def = new ReportTypeOption();
>> Model model = new Model(def);
>> setModel(model);
>> Form form = new Form("reportForm");
>> add(form);
>> form.add(createMerchantFilterMerchantsCheckboxes(model));
>>
>>
>> But, every time I hit the page, it throws
>> "org.apache.wicket.WicketRuntimeException: CheckGroup
>> [0:reportForm:merchantCheckboxGroup] contains a null model object, must
>> be
>> an object of type java.util.Collection".
>>
>> From what I can tell, this code is exactly like what's on the demo page.
>> Further, I've tried reading all the docs I can find and have even tried
>> stepping through the code. But, I'm not getting anywhere. Does anybody
>> have any ideas on how to get that model populated? It's complaining that
>> the CheckGroup doesn't have a model associated, not the Check, and indeed
>> it's not initialized with a model. Should it be? Which one?
>> --
>> View this message in context:
>> http://www.nabble.com/Null-model-with-CheckGroup-tp17419490p17419490.html
>> Sent from the Wicket - User mailing list archive at Nabble.com.
>>
>>
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