Facelets evaluates EL when rendered = false

Question

I'm want to use facelets to have a template page. But I have the problem that facelets evaluates all the EL in a <ui:define> element. Example:
<ui:composition template="template.xhtml">
<ui:define name="title"><h:outputText value="#{bundle.CustomerTitle}"/></ui:define>
<ui:define name="body" >
<h:panelGrid rendered="#{customerController.show}">
<h:dataTable id="customers" value="#{customerController.customers}">
<h:column>
<h:outputText value="#{customer.name}"/>
</h:column>
</h:dataTable>
</h:panelGrid>
</ui:define>
</ui:composition>
Even tough customerController.show is false, the content of panelGrid is rendered. Using a subview didn't solve the problem. Is this normal facelets behavior? Is this somehow solvable?
Grts, Jonathan

Answer 1

Put the content in another file and use this trick:
            <h:panelGroup rendered="#{renderedCondition}">
                <ui:include src="#{renderedCondition ? '/WEB-INF/includes/newfile.xhtml' : ''}">
                    <ui:param name="param1" value="#{value1}"/>
                    <ui:param name="param2" value="#{value2}"/>
                </ui:include>
            </h:panelGroup>