Hyper link in JSF

[Asheesh Nehra]

Hello ,
I trying to show a list of records and there is one column for edit and delete. i m trying here a hyper link which on click call a method from bean. now problem is i tried this

 
<h:commandLink id="edit" action="#{std.edit}">
						<h:outputText value="Delete" />
						<f:param id="editId" name="id" value="#{std.stdId}" />
					</h:commandLink>

but this generate exception

  java.lang.NullPointerException
	com.sun.faces.renderkit.html_basic.CommandLinkRenderer.getHiddenFieldName(CommandLinkRenderer.java:136)
	com.sun.faces.renderkit.html_basic.CommandLinkRenderer.encodeEnd(CommandLinkRenderer.java:320)
	javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:712)
	com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:443)
	com.sun.faces.renderkit.html_basic.TableRenderer.encodeChildren(TableRenderer.java:257)
	javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:693)
	javax.faces.webapp.UIComponentTag.encodeChildren(UIComponentTag.java:600)
	javax.faces.webapp.UIComponentTag.doEndTag(UIComponentTag.java:537)
	com.sun.faces.taglib.html_basic.DataTableTag.doEndTag(DataTableTag.java:491)
	org.apache.jsp.Std.listAllStd_jsp._jspx_meth_h_dataTable_0(org.apache.jsp.Std.listAllStd_jsp:216)
	org.apache.jsp.Std.listAllStd_jsp._jspx_meth_f_view_0(org.apache.jsp.Std.listAllStd_jsp:137)
	org.apache.jsp.Std.listAllStd_jsp._jspService(org.apache.jsp.Std.listAllStd_jsp:102)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:99)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:325)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:291)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:322)
	com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:147)
	com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:87)
	com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
	com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:117)
	javax.faces.webapp.FacesServlet.service(FacesServlet.java:198)
  

please any body help me with above mentioned link or any other way to achieve earlier mentioned goal i.e. edit and delete .
Thanks in Advance

[Teena Mariam]

Hi Asheesh,

Try enclosing <h:commandLink> tag in <h:form> tag.

Regards,
Teena