But, it's also so common use scenario that IMHO, the
framework should support it. The only problem is how to differentiate that
redirect request from other redirect scenarios. I could argue that the
viewhandler or something below taking care of handling the navigation case
should save the messages for the next request. Should we just open an
enhancement issue for this in JIRA so we don't loose track of
this?
Mmm... I might need it myself at some point. Stupid real
work gets in the way, I only wish I had more time to work on MyFaces
:)
Kalle
This has been asked a number of times on this mailing list.
From: Matt Blum [mailto:[EMAIL PROTECTED]
Sent: Tuesday, June 14, 2005 5:15 PM
To: MyFaces Discussion
Subject: Re: Messages and navigation rule redirects
The messages are stored in the request object, so you're losing them with the redirect. You should probably use a forward, unless there's a truly compelling reason to use a redirect. If you must use a redirect (say, so users can bookmark the resulting page), you'll have to first forward to something that will extract the messages from the request and put them in the session, and then do the redirect you were trying to do in the first place.
-Matt.
On 6/14/05, Richard Wallace <[EMAIL PROTECTED]> wrote:Hello again,
This should be a pretty simple problem. In the CRUD app that I'm using
as a proof-of-concept for using JSF here at work I've got everything
working and think I'm starting to understand some of the nuances of
JSF. But one thing that is not working as I expected is the handling of
messages.
When a user creates an object (say a contact), after filling out the
form and hitting submit they are redirected to the contact list page via
the navigational rule:
<navigation-rule>
<from-view-id>/contact/add.jsp</from-view-id>
<navigation-case>
<from-action>#{contactHandler.saveContact }</from-action>
<from-outcome>success</from-outcome>
<to-view-id>/contact/list.jsp</to-view-id>
<redirect/>
</navigation-case>
</navigation-rule>
That works and all, but in the contactHandler.saveContact() method I am
also adding an informational message that the contact was saved just to
give the user a warm fuzzy feeling. So, in my list.jsp page I have the
<h:view> followed immediately by <h:messages />. But nothing is
displayed when the user is redirected to this page after successfully
adding a contact. I know I'm adding it right because I'm doing it the
same way on the /contact/edit.jsp page which doesn't redirect after a
successful edit.
The only things I can think of that would cause this is that JSF is
processing the /contact/add.jsp page before doing the redirect, and
there is a <h:messages /> tag in there in case there is some validation
error or some other problem. But that's just a guess.
The other possibility to me is that the messages are somehow page
specific, so a message generated on one page won't show up on another.
In which case my question is how do I get around this?
Could it maybe have something to do with the backing bean that generates
the message being request scoped rather than session scoped?
Once again, thanks for the help
Rich
