p:messages on a redirected page not shown

[AndrewChurchill1970]

Hello.

I have a problem with showing messages on a redirected page with jakarta Faces 4.0 and Primefaces 14.0.10
Have you any idea what’s wrong?

Code =>

 
FacesContext fc = FacesContext.getCurrentInstance();
fc.addMessage(null,new FacesMessage(FacesMessage.SEVERITY_ERROR, "This is my message", "my title"));
fc.getExternalContext().getFlash().setKeepMessages(true);
fc.getExternalContext().getFlash().setRedirect(true);
fc.getExternalContext().redirect("error.xhtml");

error.xhtml has that components =>

       <p:messages>
             <p:autoUpdate />
       </p:messages>
       <p:growl>
             <p:autoUpdate />
       </p:growl>

MessagesRenderer Method encodeMarkup() is called but after List messages = collectFacesMessages(uiMessages, context); the messages is null;
Where the messages got lost till to this call?

[AndrewChurchill1970]

solution instead or redirect to page:

ConfigurableNavigationHandler handler = (ConfigurableNavigationHandler)FacesContext.getCurrentInstance().getApplication().getNavigationHandler();
handler.performNavigation("back"); // back= the provided outcome (see faces-config from-outcome)

=>e.g.:

		<navigation-case>
			<from-outcome>back</from-outcome>
			<to-view-id>/views/root.xhtml</to-view-id>
			<redirect />
		</navigation-case>

[melloware]

if you can put together a PF Test reproducer of the exact issue we can take a look. You workaround around seems kinda hacky it sounds like the messages are being lost in the redirect?

[melloware]

Also another thing to remember Flash Scope uses cookies and if you are running LocalHost most browsers don't allow localhost cookies anymore so that is why a lot of people use this solution for FacesMessages to survive redirect.

see: https://github.com/melloware/quarkus-faces/blob/main/src/main/java/org/primefaces/showcase/util/MultiPageMessagesSupport.java