in the example checkgroup inherits a property of the compoundpropertymodel as its model. i suggest you read the models wiki page.
-igor On Fri, May 23, 2008 at 8:36 AM, seanblaes <[EMAIL PROTECTED]> wrote: > > 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. >>> >>> >>> --------------------------------------------------------------------- >>> 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] >> >> >> > > -- > View this message in context: > http://www.nabble.com/Null-model-with-CheckGroup-tp17419490p17427924.html > Sent from the Wicket - User mailing list archive at Nabble.com. > > > --------------------------------------------------------------------- > 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]
