4 Replies Latest reply on Mar 22, 2007 4:34 PM by absolution_brazil

Action Method <aj4:support> is not called!!!!

absolution_brazil Mar 22, 2007 2:33 PM

Hi everyone,

I'm using ajax4jsf and I've got in trouble using <a4j:support> tag. Below we have the piece of code that isn't working.


<h:selectOneMenu id="selectTipo" style="width:200">
 <a4j:support event="onchange" action="#registroProcesso.showMensagemProtocolizacao}" reRender="info"/>
<f:selectItems value="#{registroProcesso.selectTodosItens}"/>
</h:selectOneMenu>

This method "showMensagemProtocolizacao" is not called even when other part of my file using <a4j:support> the same way is calling another action method. This is the other part

<h:inputText id="nomeAssunto" valueChangeListener="#{registroProcesso.addNomeAssunto}" size="20"/>

I talked with other 3 developers in my job and they, too, don't know why it's not working.

Could anyone point me what "could" be hapenning?!!

thanks in advance,
Francisco.

1. Re: Action Method <aj4:support> is not called!!!!

sergeysmirnov Mar 22, 2007 2:48 PM (in response to absolution_brazil)
Usually, the action method is not invoked if validation phase is failed. So, it is a primary place you can look at.

Do you have an <h:messages /> on the page. if so, do not forget to make it enabled for ajax updates:
<a4j:outputPanel ajaxRendered="true"> <h:messages /> </a4j:outputPanel>

If you expect that you want to manipulate with selectOneMenu only during this Ajax request, limit the component tree processing with a4j:region component. I.e.:

<a4j:region> <h:selectOneMenu id="selectTipo" style="width:200"> <a4j:support event="onchange" action="#registroProcesso.showMensagemProtocolizacao}" reRender="info"/> <f:selectItems value="#{registroProcesso.selectTodosItens}"/> </h:selectOneMenu> </a4j:region>
Actions

2. Re: Action Method <aj4:support> is not called!!!!

absolution_brazil Mar 22, 2007 3:56 PM (in response to absolution_brazil)

I tried the second one (I don't have any validation in my page yet) and it doesn't work yet. So, here are my page

<%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
<%@ taglib uri="https://ajax4jsf.dev.java.net/ajax" prefix="a4j"%>

<f:view>

<html>
 <h:form>
 <h:outputText value="Nome do Assunto*:" styleClass="edit"/>
 <h:inputText id="nomeAssunto" valueChangeListener="#{registroProcesso.addNomeAssunto}" size="20"/>

 <h:commandButton value="Pesquisar" styleClass="botao" action="#{registroProcesso.showTipoAssunto}"/>

 <h:panelGroup>

 <h:panelGroup rendered="#{not registroProcesso.imprimirDocumentos}"/>

 <h:panelGroup rendered="#{registroProcesso.imprimirDocumentos}">
 <h:outputText value="Lista de Assuntos*:" styleClass="edit"/>
 <h:selectOneMenu style="width:200">
 <a4j:support event="onclick" action="#{registroProcesso.showMensagemProtocolizacao}"></a4j:support>
 <f:selectItems value="#{registroProcesso.selectTodosItens}"/> </h:selectOneMenu>
 </h:panelGroup>

 </h:panelGroup>


 </h:form>

</html>

</f:view>

<%@ include file="/jsp/sigaProcesso/inc/Exception.inc" %>

And, this is my bean


public class BeanRegistroProcesso {

 private String nomeAssunto; // Nome que o usuário digita na primeira tela.

 private List<SelectItem> selectTodosItens;

 private List<SelectItem> selectItensSelecionados;

 private Collection<DocumentoRequerido> documentosRequeridos;

 private HtmlPanelGrid panelDocumentosRequeridos;

 private boolean imprimirDocumentos;

 private boolean mostrarMensagemProtocolizacao;

 public BeanRegistroProcesso() {

 // Some kind of initialization!!
 }

 // Getters and Setters.

 public String showMensagemProtocolizacao() {
 System.out.println("showMensagemProcolizacao"); // I WANT TO PRINT OUT THIS!!!!!!

 return null;
 }


 public void atualizarSelect(ActionEvent ex) {

 try {
 RepositorioPessoasIteravel rep = sistema.getRecursosHumanos().consultarPessoasParteNomeIteravel(this.getSolicitante().getNomePessoa().toUpperCase(), 10000, true);
 this.selectTodosItens = new ArrayList<SelectItem>();

 SelectItem item = new SelectItem();
 item.setLabel(" ");
 item.setValue(" ");
 this.selectTodosItens.add(item);

 for (Object objeto : rep.getCollection()) {
 Pessoa pessoa = (Pessoa) objeto;

 item = new SelectItem();
 item.setLabel(pessoa.getNomePessoa());
 item.setValue(pessoa);
 this.selectTodosItens.add(item);
 }

 } catch (EntradaInexistenteException e) {
 e.printStackTrace();
 } catch (NumeroRegistrosExcedidosException e) {
 e.printStackTrace();
 } catch (SistemaException e) {
 e.printStackTrace();
 }
 }

 public String showTipoAssunto() {

 this.imprimirDocumentos = !this.imprimirDocumentos;
 this.selectTodosItens = new ArrayList<SelectItem>();

 for (TipoAssunto assunto : tiposAssunto) { // Assume tiposAssunto is already populated.

 SelectItem item = new SelectItem();
 item.setLabel(assunto.getDescricao());
 item.setValue(assunto.getCodigo());
 this.selectTodosItens.add(item);
 }

 return null;
 }

 public void addNomeAssunto(ValueChangeEvent ev) {
 this.setNomeAssunto((String)ev.getNewValue());
 }
}

3. Re: Action Method <aj4:support> is not called!!!!

sergeysmirnov Mar 22, 2007 4:06 PM (in response to absolution_brazil)

Do not forget about conversion. It is a typical problem for select elements. So, check the issue with h:messages

It is helpful to have a phase tracker during the development. It helps to understand where the jsf lifecycle stops and jumps to the latest phase bypassing the INVOKE APPLICATION phase where actions are called.

Ready-to-use tracker:
http://www.jsftutorials.net/faces-config/phaseTracker.html
Actions
4. Re: Action Method <aj4:support> is not called!!!!

absolution_brazil Mar 22, 2007 4:34 PM (in response to absolution_brazil)

It's a kind of validation error!!!

thanks a lot guy! I'm gonna see what's really going on!

thanks a lot!!!
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