Hi Kumar,
On Tue, May 27, 2014 at 3:08 PM, kumar ramanathan
<kumarramana...@gmail.com>wrote:
> Thanks Martin.I did not import the label . Now that issue resolved.
>
> Now am facing issue in the run time.
>
> DemoHomePage.java
>
> package com.demo.pages;
>
> import java.util.ArrayList;
> import java.util.List;
>
> import org.apache.wicket.markup.html.WebPage;
> import org.apache.wicket.markup.html.form.*;
> import org.apache.wicket.markup.html.list.*;
> import org.apache.wicket.markup.repeater.Item;
> import org.apache.wicket.markup.repeater.RepeatingView;
> import org.apache.wicket.markup.repeater.data.DataView;
> import org.apache.wicket.markup.repeater.data.ListDataProvider;
> import org.apache.wicket.markup.html.basic.Label;
>
>
>
>
>
> public class DemoHomePage extends WebPage {
> public DemoHomePage ()
> {
> Form form=new Form("homePageForm"){
> public void submit(){
> List<DemoBean> list = new ArrayList();
> list.add(new DemoBean("1","ram"));
> list.add(new DemoBean("2","sam"));
>
> ListDataProvider<DemoBean> listDataProvider = new
> ListDataProvider<DemoBean>(list);
>
> final DataView<DemoBean> dataView = new
> DataView<DemoBean>("row",listDataProvider){
> /**
> *
> */
> private static final long serialVersionUID = 1L;
>
> protected void populateItem(Item<DemoBean> item){
> DemoBean bean=item.getModelObject();
> RepeatingView repeatingView = new
> RepeatingView("dataRow");
> repeatingView.add(new
> Label(repeatingView.newChildId(), bean.getId()));
> repeatingView.add(new
> Label(repeatingView.newChildId(),
> bean.getName()));
> item.add(repeatingView);
> }
> };
> add(dataView);
>
> }
> };
> add(form);
> }
>
> }
>
>
> *Html:*
>
> <html>
> <body>
> <form wicket:id="homePageForm">
> <input type="submit" value="ok">
> </form>
>
>
> Id
> Name
>
>
>
>
>
> </body>
> </html>
>
> Run time error is below:
> WicketMessage: Unable to find component with id 'row' in [Page class =
> com.demo.pages.DemoHomePage, id = 4, version = 0]. This means that you
> declared wicket:id=row in your markup, but that you either did not add the
> component to your page at all, or that the hierarchy does not match.
>
Which part of the explanation above is not clear?
It tells you exactly what the problem is.
> [markup =
>
> file:/home/kumar/Documents/javaapplications/Eclipse_Workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/demo/WEB-INF/classes/com/demo/pages/DemoHomePage.html
> <html>
> <head></head><body>
> <form wicket:id="homePageForm">
> <input type="submit" value="ok">
> </form>
>
>
> Id
> Name
>
>
>
>
>
> </body>
> </html>, index = 8, current = '
> ' (line 11, column 1)]
>
> Root cause:
>
> org.apache.wicket.markup.MarkupException: Unable to find component with id
> 'row' in [Page class = com.demo.pages.DemoHomePage, id = 4, version = 0].
> This means that you declared wicket:id=row in your markup, but that you
> either did not add the component to your page at all, or that the hierarchy
> does not match.
> [markup =
>
> file:/home/kumar/Documents/javaapplications/Eclipse_Workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/demo/WEB-INF/classes/com/demo/pages/DemoHomePage.html
> <html>
>
> I have used row in the submit method , but the wicket is not able to find
> since Dataview scope is not exist outside submit method. How could we
> resolve this problem, please help me.
>
>
> --
> View this message in context:
> http://apache-wicket.1842946.n4.nabble.com/Errors-in-data-view-req-for-help-to-fix-the-error-in-code-tp4666025p4666033.html
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>
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>
