Is it possible to automatically re-render h:messages on all AJAX calls with JSF2?

Question

I am using an h:messages tag on every page of my JSF2 project to show global messages. I'm also using mostly AJAX to update the page content. As it is right now, I have to include the ID of the h:messages tag in the "render" attribute of every AJAX tag so that it displays any messages that come as a result of that AJAX call. I am wondering, is there some way I can save myself from doing this to every AJAX tag and just tell it to always automatically refresh the messages on any AJAX call?

score 2 · Accepted Answer · edited May 23 '17 at 12:08

The easiest way is to go with Primefaces and its <p:messages /> component. Using autoUpdate="true" gives you the chance to have the message component updated everytime.

Alternatively, if not going to use Primefaces and want to avoid having to declare your h:messages id each time, you could use backing side updating. Just implement a JSF PhaseListener, which listens to INVOKE_APPLICATION phase and renders your component after it happens:

public class JsfPhaseListener implements PhaseListener {

    @Override
    public void afterPhase(PhaseEvent event) {
        FacesContext.getCurrentInstance().getPartialViewContext()
                .getRenderIds().add("header:messages");
    }

    @Override
    public void beforePhase(PhaseEvent event) {

    }

    @Override
    public PhaseId getPhaseId() {
        return PhaseId.INVOKE_APPLICATION;
    }

}

This will cause your header:messages component to be rendered on every single request you make.

See also:

Same is true for **Richfaces** `` - Tag: http://showcase.richfaces.org/richfaces/component-sample.jsf?demo=messages — L-Ray, Feb 21 '14 at 14:45
I am not using primefaces so I went with the phase listener method and it works very well! Thank you! — eljstonge, Feb 21 '14 at 15:38

Is it possible to automatically re-render h:messages on all AJAX calls with JSF2?

1 Answers1