CommandButton with conditional-rendered doesn't work???

Question

Hi,
My problem:
I just would like to show the Submit-Button (commandButton) after I change the value of the "selectOneMenu ". So for that I set the boolean variable for the rednerer to true. After that the Submit-Button is shown. But when I click on that Submit-Button, the action is not invoked?
But when I remove the "rendered="#{bean.rendered}" attribute from the commandButton, the action is invoke!
What do I wrong?
Would be great if someone could help me!
<h:form id="choose2">
  <h:panelGrid columns="2" rowClasses="panelChooseRow" columnClasses="panelChooseCol">
    <h:outputText value="#{msgs.beanUserName}" />
    <h:panelGroup>
      <h:selectOneMenu id="userMenu" value="#{bean.userName}" onchange="submit()" required="true">  
         <f:selectItems id="userItems" binding="#{bean.userItems}" />
      </h:selectOneMenu>
      <h:message for="userMenu" errorClass="errMsg" />
    </h:panelGroup>
    <h:outputText value="" rendered="#{bean.rendered}"/>
    <h:commandButton id="send" value="#{msgs.beanSave}" action="#{bean.actionModify}" rendered="#{bean.rendered}"/>
  </h:panelGrid>
</h:form>
Bean-Code:
  public void setUserName( String newValue )
    _userName = newValue;
    _bRendered = true;
public String actionModify()
    System.out.println("actionModify");
    return null;
  public boolean isRendered()
    return _bRendered;
  }

Answer 1

Hi,
well, I don't see what could be wrong in your code, but I have an example working.
So I will just post my code and you can compare.
Some code snipped off my JSF Site:
<h:commandButton id="upload"  rendered="#{uploadFileBean.check}" onclick="submit()" action="#{uploadFileBean.upload}" value="#{messages.upload}" styleClass="bgTextBright" tabindex="4"/>
<h:commandButton id="correct" rendered="#{not uploadFileBean.check}" onclick="submit()" action="#{uploadFileBean.correct}" value="#{messages.correct}" styleClass="bgTextBright" tabindex="4"/>Here the code in my uploadFileBean:
private boolean check;
    public boolean isCheck()
        return check;
    public void setCheck(boolean b)
        this.check = b;
public String upload()
        String retVal = Constants.UPLOAD_OK;
        return retVal;
public String correct()
        String retVal = Constants.CORRECT_OK;
        return retVal;
    }There is only one commandButton shown (depending on my check property) and if I press it, the associated action method is called.
Did you have a look, if you call the right method? Meaning, does the method exist in the given bean? Do you have your bean declared in the faces-config.xml?
As I can tell you, the posted code works fine, so hope this could help you.