Exception with <rich:modalPanel

Hi!

I'm reading "practical richfaces" and I could not do an example of chapter 7 item "Performing Partial-Component Data Updates"

When the modal screen open and I click save or close there an exception. Someone know what's happening ?

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: /datatable2.jsp(34,4) '#{userBeanUpdate.selectedUser.name}' Target Unreachable, 'selectedUser' returned null
	javax.faces.webapp.FacesServlet.service(FacesServlet.java:277)
	org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178)
	org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
	org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:368)
	org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:495)

root cause

org.apache.jasper.el.JspPropertyNotFoundException: /datatable2.jsp(34,4) '#{userBeanUpdate.selectedUser.name}' Target Unreachable, 'selectedUser' returned null
	org.apache.jasper.el.JspValueExpression.getType(JspValueExpression.java:61)
	com.sun.faces.renderkit.html_basic.HtmlBasicInputRenderer.getConvertedValue(HtmlBasicInputRenderer.java:92)
	javax.faces.component.UIInput.getConvertedValue(UIInput.java:942)
	javax.faces.component.UIInput.validate(UIInput.java:868)
	javax.faces.component.UIInput.executeValidate(UIInput.java:1072)
	javax.faces.component.UIInput.processValidators(UIInput.java:672)
	javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1053)
	javax.faces.component.UIForm.processValidators(UIForm.java:235)
	javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1053)
	javax.faces.component.UIInput.processValidators(UIInput.java:670)
	org.ajax4jsf.component.AjaxViewRoot$3.invokeContextCallback(AjaxViewRoot.java:439)
	org.ajax4jsf.component.AjaxViewRoot.processPhase(AjaxViewRoot.java:238)
	org.ajax4jsf.component.AjaxViewRoot.processValidators(AjaxViewRoot.java:455)
	com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:76)
	com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
	com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
	javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)
	org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178)
	org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
	org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:368)
	org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:495)

<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h"%>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%>
<%@ taglib uri="http://richfaces.org/rich" prefix="rich"%>
<%@ taglib uri="http://richfaces.org/a4j" prefix="a4j"%>
<html>
<head>
<title></title>
</head>
<body>
<f:view>
	<h:form>
		<rich:panel>
			<f:facet name="header"><h:outputText value="Partial update"></h:outputText></f:facet>
			<rich:dataGrid value="#{userBeanUpdate.userList}" var="theUser" columns="4" border="1" ajaxKeys="#{userBeanUpdate.rowsToUpdate}">
				<h:panelGrid id="userinfo">
					<h:outputText value="#{theUser.name}" />
					<h:outputText value="#{theUser.email}" />
					<a4j:commandLink value="edit" onclick="#{rich:component('modalPanel')}.show()" reRender="edituserinfo">
						<f:setPropertyActionListener value="#{theUser}"	target="#{userBeanUpdate.selectedUser}" />
					</a4j:commandLink>
				</h:panelGrid>
			</rich:dataGrid>
		</rich:panel>
	</h:form>
	
	<rich:modalPanel id="modalPanel">
		<f:facet name="header"><h:outputText value="Edit"></h:outputText></f:facet>
		<a4j:keepAlive beanName="user" />
		<h:form>
			<h:panelGrid id="edituserinfo" columns="2">
				<h:outputText value="Name:" />
				<h:inputText value="#{userBeanUpdate.selectedUser.name}" />
				<h:outputText value="Email" />
				<h:inputText value="#{userBeanUpdate.selectedUser.email}" />
			</h:panelGrid>
			<h:panelGrid columns="2">
				<a4j:commandLink value="Close" onclick="#{rich:component('modalPanel')}.hide()" />
				<a4j:commandLink value="Save" 
								 actionListener="#{userBeanUpdate.updateUser}"
								 oncomplete="#{rich:component('modalPanel')}.hide()"
								 reRender="userinfo" >
								 </a4j:commandLink>
			</h:panelGrid>
		</h:form>
	</rich:modalPanel>
</f:view>
</body>
</html>

The value of your selectedUser object is null.

Better Initialize it before you enter the modalPanel.

Akash
TheDaedals

it works fine now