JSF 2: page redirect after ajax call - ajax

Question

I'm stuck in a navigation case problem similar to this one.
In a few words, I'm trying to redirect navigation from one page to another, using an ajax rendered h:commandLink.
Here's the backing bean
#ManagedBean
public class StartBean {
public void search(){
FacesContext
.getCurrentInstance()
.getExternalContext()
.getFlash()
.put("result", "hooray!")
;
}
public String showResult(){
return "result?faces-redirect=true";
}
}
and the starting page
<h:body>
<h:form prependId="false">
<h:commandButton value="Click" action="#{startBean.search}">
<f:ajax execute="#this" render="#form"/>
</h:commandButton>
<br/>
<h:commandLink
action="#{startBean.showResult()}"
rendered="#{flash.result != null}"
value="#{flash.result}"
/>
</h:form>
</h:body>
whereas result page is just showing a message. Both pages are on web module context root.
It happens that the h:commandLink is correctly displayed after ajax submit, but clicking on it causes a page refresh. It doesn't redirect towards the result page, as expected.
After it, if page is reloaded (F5), result page is shown. It seems to be a rendering cycle matter.
Any suggestion?
Thanks in advance.

Answer 1

The rendered attribute of all input and command components is re-evaluated when the form is submitted. So if it evaluates false, then JSF simply won't invoke the action. The Flash scope is terminated when the request/response of the search() method is finished. It isn't there in the Flash scope anymore when you send the request of the showResult(). I suggest to put the bean in the view scope and bind the rendered attribute to its property instead.
#ManagedBean
#ViewScoped
public class StartBean {
private String result;
public void search(){
result = "hooray";
}
public String showResult(){
return "result?faces-redirect=true";
}
public String getResult() {
return result;
}
}
with
<h:commandLink
action="#{startBean.showResult}"
rendered="#{startBean.result != null}"
value="#{startBean.result}"
/>
See also:
commandButton/commandLink/ajax action/listener method not invoked or input value not updated