Validate modification in ajax on a h:selectOneListbox


I need to do the same thing that the related question, this time this is on a html event, so I don't know exactly how to manage this with the a4j:support?


Is there an other component in richfaces that have the same display and have listener? or permit to have an direct synchronisation with the bean?
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Kevin CrossChief Technology OfficerCommented:
Check the ajaxValidator, should work.  This page gives example of how to code the ValidationBean and include the tag in JSF.
NargzulAuthor Commented:
But I've nothing to validate on this field.

In facts, at the final validation, he could be empty, it's just an intermediary container
Kevin CrossChief Technology OfficerCommented:
Oh, sorry guess I misunderstood.  Thought you were looking to do validation.

I am not sure, so will have to do some research.  I know there is a4j:ajaxListener, but I have not used enough to know for certain that is what you need; however, you can give it a try.  It is guaranteed to be invoked for every AJAX response before the Render Response fires.
NargzulAuthor Commented:
I've try this but it doesn't work.

I've found this:
But I've an error because the "selectOneListbox"  "Parent component treetake for a ajaxListener is not source of AjaxEvents"

<a4j:outputPanel id="ajxpn1" ajaxRendered="true">     
   <h:selectOneListbox id="listservtake"  rendered="#{AddDeal.serv!=null}" value="#{AddDeal.currentService}" >
      <f:selectItems  value="#{AddDeal.serv}"/>

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NargzulAuthor Commented:
Sorry, I put the wrong error: "Parent component listservtake for a ajaxListener is not source of AjaxEvents"

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