Anything outside <ui:define>
and <ui:composition>
is ignored during building the view and don't end up in JSF component tree.
You need to put <ui:fragment>
inside <ui:define>
.
<ui:composition template="../../WEB-INF/tpl/admin/template.xhtml">
<ui:define name="sectionTitle">Admin</ui:define>
<!-- Logged as Admin -->
<ui:define name="body">
<ui:fragment rendered="#{user.admin}">
<h3>Welcome</h3>
<p>Please choose an administration task!</p>
</ui:fragment>
</ui:define>
</ui:composition>
An alternative is to use JSTL <c:if>
as that runs during view build time already:
<ui:composition template="../../WEB-INF/tpl/admin/template.xhtml">
<ui:define name="sectionTitle">Admin</ui:define>
<!-- Logged as Admin -->
<c:if test="#{user.admin}">
<ui:define name="body">
<h3>Welcome</h3>
<p>Please choose an administration task!</p>
</ui:define>
</c:if>
</ui:composition>