PrimeFaces commandButton doesn't navigate - jsf-2

Question

I have this code :
Add.xhtml :
<h:form id="nouv">
<h:panelGrid columns="2">
<h:outputText value="Nom:"></h:outputText>
<p:inputText value="#{ddeBean.nom}"></p:inputText>
<p:commandButton id="save"
value="ajouter"
update=":nouv:btn"
actionListener="#{ddeBean.ajouter}">
</p:commandButton>
<p:outputPanel id="btn">
<h:outputText rendered="#{ddeBean.created}" value="#{ddeBean.message}"/>
<p:commandButton id="btn_cr" value="add" rendered="#{ddeBean.created}"
action="pool.xhtml?faces-redirect=true">
</p:commandButton>
</p:outputPanel>
</h:panelGrid>
</h:form>
ddeBean.java :
#ManagedBean(name = "ddeBean")
#RequestScoped
public class DemandeBean implements Serializable{
ddeDAO dao = new ddeDaoImpl();
private String nom;
public String message = "";
private boolean created = false;
public void test(ActionEvent event){
Demande p = new Demande();
p.setDde(this.nom);
dao.Nouveau_dde(p);
created = true;
this.setMessage("saved!");
}
}
When I click commandButton Ajouter the message an the commandbutton Add will be shown, but commandbutton Add doesn't redirect to pool.xhtml.

Answer 1

When you click on the button Add, the bean is recreated and the value #{ddeBean.created} then reinitialized to false so the button doesn't get rendered before action take place.
To fix that, you need to change the scope of your bean to #ViewScoped.
You should also make sure to replace
public void test(ActionEvent event){
by
public void ajouter(ActionEvent event){
if you want that your button work properly.
Another solution
Since you are using PrimeFaces, you could show your button by JavaScript :
<p:commandButton id="save"
value="ajouter"
oncomplete="panel-create.show();"
actionListener="#{ddeBean.ajouter}">
</p:commandButton>
<p:outputPanel id="btn" style="display: none;" widgetVar="panel-create">
<h:outputText value="#{ddeBean.message}"/>
<p:commandButton id="btn_cr" value="add"
action="pool.xhtml?faces-redirect=true">
</p:commandButton>
</p:outputPanel>
Note the oncomplete attribute on the p:commandButton, the widgetVar attribute on the p:panel and the rendered attributes removed.