Thanks but it doesn't work:
Using
<h:panelGroup id="#{cc.clientId}" layout="block" rendered="#{not empty facesContext.getMessageList(cc.attrs.for)}">
<h:outputText value="here we are"/>
</h:panelGroup>
the output text is never displayed.
But if I use
<h:panelGroup id="#{cc.clientId}" layout="block" rendered="#{not empty facesContext.getMessageList('j_idt10:j_idt85:j_idt86:j_idt87:userNameInput')}">
<h:outputText value="here we are"/>
</h:panelGroup>
it is ok.
How can I get the complete clientId?
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