4 Replies Latest reply on Sep 14, 2010 9:02 AM by harut

    Submitting values of conditionally rendered inputfields

    jensmander
    jensmander Sep 9, 2010 9:27 AM

      Hi,

       

      I'd like to show some fields of my form only in specific situations. It depends on the selected values of a combobox. To set up the conditional behavior of the inputtext-element I use the rendered-attribute and to reRender the inputtext-element I specified a a4j:support-element within the combobox which invokes the rerender process if the combobox changes it's values. The problem is that if I do it like that page never transfers the values of the inputtext into the defined BackingBean attribute or in other words the setInputtext method will never be invoked.

       

      Take a look at this JSF-Code

       

       

      <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
    xmlns:ui="http://java.sun.com/jsf/facelets"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:f="http://java.sun.com/jsf/core"
    xmlns:rich="http://richfaces.org/rich"
    xmlns:a4j="http://richfaces.org/a4j">
<body>
<ui:composition template="/templates/popup.xhtml">
    <ui:define name="pageTitle">Test</ui:define>
    <ui:define name="pageHeader">Testform</ui:define>
    <ui:define name="body">
        <h:form id="frmTest">
            <h:panelGrid columns="2">
                <h:outputLabel value="Choice" />
                <rich:comboBox value="#{testBean.value}">
                    <f:selectItems value="#{testBean.values}" />
                    <a4j:support event="onchange" reRender="frmTest" />
                </rich:comboBox>
                <h:outputLabel for="txtInput" value="Inputtext" />
                <h:inputText id="txtInput" value="#{testBean.inputText}" rendered="#{testBean.visible}"/>
                <h:commandButton value="Submit" />
            </h:panelGrid>
        </h:form>
    </ui:define>
</ui:composition>
</body>
</html>

       

      The backing bean is set to request scope and looks like that

       

       

      package de.hd.kiwi.backingBean;

import java.util.ArrayList;
import java.util.List;

import javax.faces.model.SelectItem;

public class TestBean {

    private String choice;
    private String inputText;
    
    public boolean isVisible() {
        return choice != null && (choice.equals("Choice 2") || choice.equals("Choice 4"));
    }
    
    public List<SelectItem> getValues() {
        List<SelectItem> res = new ArrayList<SelectItem>();
        for (int i =0; i< 5;++i) {
            res.add(new SelectItem("Choice " + i));
        }
        return res;
    }

    public void setValue(String s) {
        choice = s;
    }
    
    public String getValue() {
        return choice;
    }

    public String getInputText() {
        return inputText;
    }

    public void setInputText(String input) {
        System.out.println("Inputtext: " + input);
        this.inputText = input;
    }
}

       

      May anybody tell me why this problems occures? The submit-button should invoke all the setters of the BackingBean I guess so why it doesn't? Is there a missmatch of the client and server-side? I hope somebody can tell me how to fix it. Thanks a lot.

       

      Jens