Setting ui:param conditionally

Question

I want to set a ui:param depending on a bean value and I thought using c:if was a good idea. So I put in my page the following code:

Answer 1

You are using JSTL with Facelets. JSTL are executed during view build time, and not in render phase. Additionally there some issues with processing them in JSF2 libraries - like in older Mojarra versions, where they didn't work on view scoped beans with partial state saving - see https://stackoverflow.com/a/3343681). This is why your EL expression has worked.

The solution is to avoid JSTL - use ui:repeat instead c:forEach and EL expression and conditional rendering instead of c:if.