I am newbie on wicket and it is starting to impress me.
It is a perfect web framework.
Thx everyone.
Fatih
final ListView productPropertyList = .....
Found it :)
ListItem item = (ListItem) productPropertyList.iterator().next();
DropDownChoice d= (DropDownChoice) item.get("dropDown");
System.out.println(d.getInput());
-----Original Message-----
From: Fatih Mehmet UÇAR [mailto:[EMAIL PROTECTED]
Sent: Monday, March 17, 2008 9:32 PM
To: 'users@wicket.apache.org'
Subject: RE: ListView Problem (contains varying number of components inside)
Hi Michael,
Thanks for your reply. I have looked closer just after sending the email
found the problem and fixed it same as you have told. The new problem I am
facing is, how to get the selected values of the select boxes. Would you
please give me an idea on how to do this.
Thx.
Fatih
-----Original Message-----
From: Michael O'Cleirigh [mailto:[EMAIL PROTECTED]
Sent: Monday, March 17, 2008 8:52 PM
To: users@wicket.apache.org
Subject: Re: ListView Problem (contains varying number of components inside)
Hi Fatih,
The problem is that you have not set a model on your drop down choice so
there is a null model which causes the exception you see to be generated.
Caused by: java.lang.IllegalStateException: Attempt to set model object on
null model of component:
productProposalForm:productsPropertyListView:0:dropDown:dropDown
Setting a default model on the dropdown choice should fix your problems.
i.e. add a 'new Model()' as the second argument to the DropDownChoice
constructor
public class NestedDropDownPanel extends Panel {
public NestedDropDownPanel(String id,int productPropertyId) {
super(id);
ProductPropertyOptionDAO productPropertyOptionDAO = new
ProductPropertyOptionDAO(productPropertyId);
DropDownChoice dropDownChoice=new DropDownChoice("dropDown",
new Model (), new
Model((Serializable)productPropertyOptionDAO.getResultList()),new
ChoiceRenderer("name"));
dropDownChoice.setRequired(true);
add(dropDownChoice);
}
Mike
>
>
> Hi,
>
>
>
>
>
> I am using a ListView to render the dynamic number of select boxes and
> their options.
>
> Hi Fatih,
>
>
>
> The problem is that you have not set a model on your drop down choice
> so there is a null model which causes the exception you see to be
> generated.
>
>
>
> Setting a default model on the dropdown choice should fix your
> problems. i.e. add a 'new Model()' as the second argument to the ddc.
>
>
>
>
>
>
>
> public class NestedDropDownPanel extends Panel {
>
>
>
>
>
>
>
> public NestedDropDownPanel(String id,int productPropertyId) {
>
>
>
> super(id);
>
>
>
> ProductPropertyOptionDAO productPropertyOptionDAO = new
>
> ProductPropertyOptionDAO(productPropertyId);
>
>
>
> DropDownChoice dropDownChoice=new DropDownChoice("dropDown",
new Model (), new
>
> Model((Serializable)productPropertyOptionDAO.getResultList()),new
>
> ChoiceRenderer("name"));
>
>
>
> dropDownChoice.setRequired(true);
>
>
>
> add(dropDownChoice);
>
>
>
> }
>
>
>
>
>
>
>
> Mike
>
> I have added all select boxes into a ListView object and listView into a
> form and trying to calculate a final price using all selected values from
> select boxes.
>
>
>
> However, when I submit the form I got an exception before the execution of
> onSubmit() method.
>
>
>
> I am doing sth wrong but I could not find. Would u please give me some
idea
> about how to overcome this problem.
>
>
>
> Thx.
>
> Fatih
>
>
>
>
>
>
>
>
>
> I have a database design similar to below one.
>
>
>
> Product names are coming from db
>
> and all products have diffrent kind of Properties
>
> And each property have options
>
> all also coming from db (choices in the select boxes).
>
>
>
>
>
> Product
>
> ------------
>
> Id
>
> Name
>
>
>
> Eg.
>
> Audi A3
>
> Audi A4
>
> Audi A6
>
>
>
>
>
> ProductProperty
>
> ----------
>
> Id
>
> Name
>
>
>
> Eg.
>
> Engine Type.
>
> .
>
> .
>
>
>
>
>
> ProductPropertyOption
>
> -------
>
> Id
>
> Name
>
>
>
> Eg.
>
> 1.6lt
>
> 2.0lt
>
> 1.9lt Diesel
>
> .
>
> .
>
>
>
>
>
>
>
>
>
>
>
> StackTrace:
>
>
>
> org.apache.wicket.WicketRuntimeException: Method onFormSubmitted of
> interface org.apache.wicket.markup.html.form.IFormSubmitListener targeted
at
> component [MarkupContainer [Component id = productProposalForm, page =
> com.cooldatasoft.page.proposal.ProductMenu, path =
> 1:productProposalForm.ProductMenu$ProductProposalForm, isVisible = true,
> isVersioned = true]] threw an exception
>
> at
>
org.apache.wicket.RequestListenerInterface.invoke(RequestListenerInterface.j
> ava:194)
>
> at
>
org.apache.wicket.request.target.component.listener.ListenerInterfaceRequest
> Target.processEvents(ListenerInterfaceRequestTarget.java:73)
>
> at
>
org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(Abstra
> ctRequestCycleProcessor.java:90)
>
> at
>
org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:116
> 6)
>
> at org.apache.wicket.RequestCycle.step(RequestCycle.java:1241)
>
> at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1316)
>
> at org.apache.wicket.RequestCycle.request(RequestCycle.java:493)
>
> at
> org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:354)
>
> at
>
org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:194)
>
> at
>
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
> FilterChain.java:235)
>
> at
>
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh
> ain.java:206)
>
> at
>
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja
> va:233)
>
> at
>
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja
> va:175)
>
> at
>
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128
> )
>
> at
>
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102
> )
>
> at
>
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java
> :109)
>
> at
>
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)
>
> at
> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
>
> at
>
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http
> 11Protocol.java:584)
>
> at
> org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
>
> at java.lang.Thread.run(Unknown Source)
>
> Caused by: java.lang.reflect.InvocationTargetException
>
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>
> at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
>
> at java.lang.reflect.Method.invoke(Unknown Source)
>
> at
>
org.apache.wicket.RequestListenerInterface.invoke(RequestListenerInterface.j
> ava:183)
>
> ... 20 more
>
> Caused by: java.lang.IllegalStateException: Attempt to set model object on
> null model of component:
> productProposalForm:productsPropertyListView:0:dropDown:dropDown
>
> at org.apache.wicket.Component.setModelObject(Component.java:2850)
>
> at
>
org.apache.wicket.markup.html.form.FormComponent.updateModel(FormComponent.j
> ava:1016)
>
> at
org.apache.wicket.markup.html.form.Form$19.validate(Form.java:1750)
>
> at
>
org.apache.wicket.markup.html.form.Form$ValidationVisitor.formComponent(Form
> .java:160)
>
> at
>
org.apache.wicket.markup.html.form.FormComponent.visitFormComponentsPostOrde
> rHelper(FormComponent.java:402)
>
> at
>
org.apache.wicket.markup.html.form.FormComponent.visitFormComponentsPostOrde
> rHelper(FormComponent.java:389)
>
> at
>
org.apache.wicket.markup.html.form.FormComponent.visitFormComponentsPostOrde
> rHelper(FormComponent.java:389)
>
> at
>
org.apache.wicket.markup.html.form.FormComponent.visitFormComponentsPostOrde
> rHelper(FormComponent.java:389)
>
> at
>
org.apache.wicket.markup.html.form.FormComponent.visitFormComponentsPostOrde
> rHelper(FormComponent.java:389)
>
> at
>
org.apache.wicket.markup.html.form.FormComponent.visitFormComponentsPostOrde
> r(FormComponent.java:366)
>
> at
>
org.apache.wicket.markup.html.form.Form.visitFormComponentsPostOrder(Form.ja
> va:1026)
>
> at
>
org.apache.wicket.markup.html.form.Form.internalUpdateFormComponentModels(Fo
> rm.java:1742)
>
> at
>
org.apache.wicket.markup.html.form.Form.updateFormComponentModels(Form.java:
> 1709)
>
> at org.apache.wicket.markup.html.form.Form.process(Form.java:831)
>
> at
> org.apache.wicket.markup.html.form.Form.onFormSubmitted(Form.java:773)
>
> ... 25 more
>
>
>
>
>
>
>
>
>
>
>
>
>
> final ListView productsList = new ListView("productsPropertyListView",new
> Model( (Serializable)(new ProductPropertyDAO(productId)).getResultList())
)
> {
>
> public void populateItem(final ListItem item) {
>
> final TbProductProperty productProperty =
> (TbProductProperty) item.getModelObject();
>
> item.add(new
> Label("productPropertyName",productProperty.getName()));
>
> item.add(new NestedDropDownPanel("dropDown",
> productProperty.getId()));
>
>
>
> }
>
> };
>
> productsList.setReuseItems(true);
>
> add(productsList);
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> public class NestedDropDownPanel extends Panel {
>
>
>
> public NestedDropDownPanel(String id,int productPropertyId) {
>
> super(id);
>
> ProductPropertyOptionDAO productPropertyOptionDAO = new
> ProductPropertyOptionDAO(productPropertyId);
>
> DropDownChoice dropDownChoice=new
DropDownChoice("dropDown",new
> Model((Serializable)productPropertyOptionDAO.getResultList()),new
> ChoiceRenderer("name"));
>
> dropDownChoice.setRequired(true);
>
> add(dropDownChoice);
>
> }
>
>
>
>
>
> }
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> <form wicket:id="productProposalForm">
>
> <table><tr><td>
>
> <fieldset>
>
> <legend>Product Proposal</legend>
>
> <font color="RED"><span
> wicket:id="feedbackPanel"/></font>
>
> <table>
>
> <tr
> wicket:id="productsPropertyListView">
>
> <td><span
> wicket:id="productPropertyName"></span></td>
>
> <td><span
> wicket:id="dropDown"></span></td>
>
> </tr>
>
> </table>
>
>
>
> <input type="submit"
> value="Hesapla" wicket:id="calculateButton"/>
>
>
>
> </fieldset>
>
> </td></tr></table>
>
> </form>
>
>
>
>
>
>
>
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