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copied!<p>Tag handlers like <code><c:forEach></code> runs during building the view, not during rendering the view. UI components like <code><h:dataTable></code> runs during rendering the view, not during building the view. So, at the moment the <code><c:forEach></code> runs, the <code><h:dataTable></code> isn't running and thus its <code>var="rubro"</code> is never available in the EL scope and thus <code>#{rubro}</code> inside <code><c:forEach></code> <em>always</em> evaluates as <code>null</code>.</p> <p>So, the <code><c:forEach></code> is completely out of the question for this particular functional requirement. Your best bet is using the <code><ui:repeat></code>. This does however not support anything like the <code>begin</code> and <code>end</code> attribute of the <code><c:forEach></code>. You could however create a <a href="https://stackoverflow.com/questions/7079978/how-to-create-a-custom-el-function/7080174#7080174">custom EL function</a> which creates a dummy array of the given size and then feed it to <code><ui:repeat value></code>.</p> <p>E.g.</p> <pre><code><ui:repeat value="#{my:createArray(robro.nivel)}"> <h:outputText value="__*" /> </ui:repeat> </code></pre> <p>with</p> <pre><code>public static Object[] createArray(int size) { return new Object[size]; } </code></pre> <p>The JSF utility library <a href="http://omnifaces.org" rel="nofollow noreferrer">OmniFaces</a> has an <code>of:createArray()</code> function for exactly this purpose, see also <a href="http://showcase.omnifaces.org/functions/Arrays" rel="nofollow noreferrer">the <code>of:createArray()</code> showcase example</a>.</p> <h3>See also:</h3> <ul> <li><a href="https://stackoverflow.com/questions/3342984/jstl-in-jsf2-facelets-makes-sense">JSTL in JSF2 Facelets... makes sense?</a></li> <li><a href="https://stackoverflow.com/questions/7079978/how-to-create-a-custom-el-function/7080174#7080174">How to create a custom EL function to invoke a static method?</a></li> </ul>

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