I am updating a component via AJAX in JSF:
<h:form>
<h:outputLink>Click me
<f:ajax event="click" render=":messages" />
</h:outputLink>
</h:form>
<h:messages id="messages" globalOnly="true" />
As the <h:messages /> resides outside <h:form /> I have to prefix the ID with colon (:). This works.
However, if I put this same code into a component and include that component into my page, the code fails. The reason is that :messages declaration refers to the root of the component hierarchy, while the <h:messages /> component that I want to update actually resides under my custom component, which resides under the page (so the location is of style :myComponent:messages.
Inside my component, how can I achieve the correct prefix to the <h:messages /> component? I know that I can manually assign ID to my component, and use that to prefix the reference (like :#{cc.attrs.id}:messages). However, I don't know at which level of component hierarchy this component lies, so the required prefix might even be something like :foo:bar:x:y:messages.