Changing form components by selectOneMenu - so easy, but doesn't work

Question

Hi,
I have silly problem that makes me crazy: I have a little form and I want to change content of all components dependent on my choice made in selectOneMenu. But it doesn't work like it's supposed to in logical way. For instance I have a selectOneRadio component in which I want to display a proper radio marked dependent on my choice in selectOneMenu. So I am setting Radio's 'rodzaj' bean property (Integer) in the valueChangeListener (idZmWart) of Select element to the chosen value. Bean is updated, but no effect on the page at all, no matter of Select's choice. Am I completely misunderstanding JSF lifecycle (studied many times) or it's just a very stupid mistake?
Code is below:
code fragment in jsp page:
<f:view>
  <h:form>
     <h:selectOneMenu id="wyborId" value="#{Backingbean.id}"
                   valueChangeListener="#{Backingbean.idZmWart}"
                   onchange="submit()">                                  
         <f:selectItems value="#{Backingbean.listaId}" />              
     </h:selectOneMenu>
    <h:selectOneRadio id="wyborRodzaj" value="#{Backingbean.rodzaj}"
                  valueChangeListener="#{Backingbean.rodzajZmWart}"
                  onchange="submit()">
         <f:selectItems value="#{Backingbean.listaRodzaj}"/> 
    </h:selectOneRadio>                              
   <h:commandButton value="button" action="#{Backingbean.button_action}" />                               
</h:form>
</f:view>Backingbean code:
package com.jsf;
import java.util.ArrayList;
import javax.faces.context.FacesContext;
import javax.faces.event.ValueChangeEvent;
import javax.faces.model.SelectItem;
public class Backingbean {
   public Backingbean() {
   public String button_action()
      setRodzaj(getId());                
      return "success";
   private Integer id = new Integer(1);
   public Integer getId() {
      return id;
   public void setId(Integer id) {
      this.id = id;
   public void idZmWart(ValueChangeEvent ev) {
      if (ev.getNewValue() != null){
         Integer i = (Integer) ev.getNewValue();
         setRodzaj(i);          
   private ArrayList listaId = new ArrayList();
   public ArrayList getListaId() {     
      ArrayList tmpLista = new ArrayList();
      for (int j=1; j<5; j++) {
         Integer i = new Integer(j);           
         SelectItem si = new SelectItem(i, i.toString());           
         tmpLista.add(si);                    
      listaId = tmpLista;
      return listaId;
   public void setListaId(ArrayList listaId) {
      this.listaId = listaId;
   private Integer rodzaj = new Integer(1);
   public Integer getRodzaj() {
      return rodzaj;
   public void setRodzaj(Integer rodzaj) {
      this.rodzaj = rodzaj;
   private SelectItem[] listaRodzaj = {
      new SelectItem(new Integer(1), "przedmiot"), //value, label
      new SelectItem(new Integer(2), "pracownik"),     
      new SelectItem(new Integer(3), "strona"),     
      new SelectItem(new Integer(4), "menu"),     
   public SelectItem[] getListaRodzaj() {
      return listaRodzaj;     
   public void setListaRodzaj(SelectItem[] listaRodzaj) {
      this.listaRodzaj = listaRodzaj;
   public void rodzajZmWart(ValueChangeEvent ev) {
      if (ev.getNewValue() != null) {
         String sRodzaj = ev.getNewValue().toString();        
}And fragment of faces-config.xml - in one of the many shapes I've tried
<managed-bean>
   <managed-bean-name>Backingbean</managed-bean-name>
   <managed-bean-class>com.jsf.Backingbean</managed-bean-class>
   <managed-bean-scope>session</managed-bean-scope>
   <managed-property>listaId</managed-property>
</managed-bean>
<managed-bean>
   <managed-bean-name>listaId</managed-bean-name>
   <managed-bean-class>java.util.ArrayList</managed-bean-class>
   <managed-bean-scope>session</managed-bean-scope>  
</managed-bean>Thanks for any reply. Regards,
savage82

Answer 1

Yeh sorry the points are not linked so you either can do 1 or 2 or 3
With 3)
You would have to bind all the components that get updated by your value changed listeners to your backing bean (using the binding attribute)
And in your value changed listeners you would call the .setValue() on the components whose variable values changed during the value changed code. When your finished you would call the .renderResponse(). The reason this works is that a straight call to .renderResposne() it seems JSF does something funny, it should call the getters() of your variables then use these values and call the .setValue() on your components. But it doesn�t so instead you call the .setValue() yourself. The problem is you have to update every component potentially allot of work
point 2 is an easy solution
from my blog
public void changeMethod(ValueChangeEvent event)
PhaseId phaseId = event.getPhaseId();
String oldValue = (String) event.getOldValue();
String newValue = (String) event.getNewValue();
if (phaseId.equals(PhaseId.ANY_PHASE))
event.setPhaseId(PhaseId.UPDATE_MODEL_VALUES);
event.queue();
else if (phaseId.equals(PhaseId.UPDATE_MODEL_VALUES))
// do you method here
}what this does the changeMethod will get called twice. First off it gets called when it is meant to during validation phase. So we catch this call in our if statment then we queue the value changed event until the update model phase. So then when the update model phase is called your value changed event will be fired again. Basically this just moves the value changed code after the setters are called. That way any changes you make to your component values in your value change code will not be overwritten by the setters.
point 1)
Sorry forgot to add you may need renderResponse() after navigation rule (should test this)
using the navigation rule well i dont exactly understand why this works. But my educated guess is using a navigation rule forces jsf to recreate the view i.e. the component tree is lost so the values you change in your value changed listeners will be reflected in your components as the components get recreated with the changed variables values.
So take the above code
and replace // do you method here
with whatever your value changed code would be
This is possibly a bad solution not exactly sure the performance hit you would take on this one i have never noticed any problems with my system but never benched marked it either.