How to check in JSF if string empty in 'rendered' attribute

Question

I want to render different primefaces components based on thr string value. How to check if the string is empty in 'rendered' attribute?

Answer 1

You should use the empty EL operator:

<p:someComponent rendered="#{not empty suchBean.veryStringWow}"/>

<p:differentComponent rendered="#{empty suchBean.veryStringWow}"/>

If the bean String property is empty or null, the "different component" is rendered.