Question

Due to the problem with @ViewScoped, I have to use ui:repeat instead of c:foreach in my facelet. However I encounter this problem and I wonder if anyone can suggest a work-around.

<ui:repeat value="#{someBean.idCodes}"
           var="led">
           <h:outputText id="mailbox-#{led}" 
               value="#{someBean.getSomeValue(led)}" />
</ui:repeat>

The first problem is that the #{led} reference is the id attribute does NOT get evaluated. All the generated id attributes are simply the value “mailbox-“. I need to find specific element instances with document.getElementById() so I need generated id attributes.

The other problem which I can’t see a workaround for is that if I wrap the ui:repeat element inside an h:panelGrid element, I end up with a table with one cell in it, rather than one cell for each member of the idCodes collection.

When using c:foreach neither of these problems exist, but use of that tag causes other problems. Any suggestions?

Answer 1

Notice in the javadocs that the type of the id attribute is String, not ValueExpression. That’s why your ${led} is not evaluated. You could try to wrap each one in a div or span and set the id of that element to your ${led} based expression.