Retain all form field values after input text field validation failure

Question

Hi,
I have a form with 1 input text field, one Command button and one h:selectManyListbox. when User enteres some values in input field and clicks on command button named Add, the value is validated. If input is invalid, then an error message appears next to the field. If input is valid, then the value is added into h:selectManyListbox. Adding to list box is done using Ajax4Jsf.
Probelm:
Let's assume user entered 3 valid values one after another and all are added into the list box. When he enters a wrong value, and error message appears. however, the entered values in list box goes away. Is there a way to retain the values even after validation failure.
Code is given below;
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h"%>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%>
<%@ taglib uri="http://myfaces.apache.org/tomahawk" prefix="t"%>
<%@ taglib uri="http://richfaces.org/rich" prefix="rich"%>
<%@ taglib uri="http://richfaces.org/a4j" prefix="a4j"%>
<h:panelGroup>
     <h:outputLabel for="inputEmailId1" value="Email Id: " />
     <t:inputText value="#{bean.newEmailId}" id="inputEmailId1" maxlength="100" size="40" immediate="true">
          <t:validateEmail message="Enter a valid Email Id." />
     </t:inputText>
     <t:message for="inputEmailId1" styleClass="errorStyleClass" />
</h:panelGroup>
<t:panelGroup style="text-align: left;" >
     <a4j:commandButton value="Add" styleClass="buttonsSub" action="#{bean.addSharedEmails}"
          reRender="inputEmailId1, selectedSharedEmails" />
</t:panelGroup>
<t:panelGroup style="text-align: left;">
     <h:selectManyListbox id="selectedSharedEmails" size="8" style="width:100%;" immediate="true">
          <f:selectItems value="#{bean.sharedEmails}" />
     </h:selectManyListbox>
</t:panelGroup>
Thanks in advance,

Answer 1

Use the attribute "binding" instead of a "value". This will remember the value. You can also make sure that you dont have anything in your constructor or class level that initialises that value to "" or null. Because if JSF is remembering your value but your initialization that gets triggered before the page loading resets it to default values then you need to change that part of the code.