Hi David -
Hi Andy,
Thanks for responding.
David Geary wrote On
5/12/2009 12:36 PM ET:
<h:selectOneMenu id="menu"
value="#{place.zoomIndex}"
valueChangeListener="#{place.zoomChanged}"
style="font-size:13px;font-family:Palatino">
<f:selectItems value="#{places.zoomLevelItems}"/>
<f:ajax execute="@this" render="image"/>
</h:selectOneMenu>
This looks good to me.
Yup. I thought that perhaps I was failing validation for some reason,
so I added immediate="true" to the f:ajax tag, but it didn't fix the
problem. :(
With FireBug, I've verified that a POST
request is indeed executed when
I change the zoom level, and it appears that everything is in order:
form form
j_id-939329235_16ef8569:0:j_id-939329235_16ef8513:j_id1608935764_5fe6690f:menu
3
javax.faces.ViewState -1363564553004911965:-1863826268811277742
javax.faces.behavior.event valueChange
javax.faces.partial.ajax true
javax.faces.partial.event change
javax.faces.partial.execute
j_id-939329235_16ef8569:0:j_id-939329235_16ef8513:j_id1608935764_5fe6690f:menu
javax.faces.partial.render
j_id-939329235_16ef8569:0:j_id-939329235_16ef8513:j_id1608935764_5fe6690f:image
javax.faces.source
j_id-939329235_16ef8569:0:j_id-939329235_16ef8513:j_id1608935764_5fe6690f:menu
And the request payload looks
right - seems like all of the necessary
information is present. (Though, man, those auto-generated client ids
sure are huge!)
Yes, it looks right to me too.
I get a response back that looks like this:
<?xml version="1.0" encoding="utf-8"?>
<partial-response><changes><update
id="javax.faces.ViewState"><![CDATA[1747337848471748955:2683565346534242854
]]></update></changes></partial-response>
However, with f:ajax, my value change listener is never invoked on the
server, so the menu doesn't update, even though I've specified that the
menu should go through the execute phase of the lifecycle.
Does anyone know why my value change listener is not invoked? Am I
doing something wrong, or is this a bug?
Seems like the execute
portion of the lifecycle is not being invoked
properly. I don't see anything wrong in your code - so I suspect there
is a bug here.
I put a phase listener in the app to monitor the lifecycle, and all six
phases of the lifecycle are invoked, in the correct order when the ajax
request is made, but my value change listener is still not invoked.
It's interesting to note that when I remove the f:ajax tag, and add an
onchange="submit()" attribute to the menu, my value change listener
does get invoked, so it definitely seems like a bug to me. I can't
think of any good reason for the difference in behavior between the
Ajax and non-Ajax versions.
It seems to me that the lifecycle is executing properly, but it's not
processing my menu, even though I've got execute="@this", and that
information is apparently correctly passed to the server.
Is anyone from the RI team listening? Ryan? I can JAR up the app, and
send it to interested parties. I'd really like to get this fixed so I
can nail down this demo for JavaOne. It's a pretty cool demo, but it
looses much of its appeal when it doesn't work.