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POrich dataTable can not use iterate variable for a nested loop
 

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    <p>I'm building a rich datatable with a dynamic amount of columns. It seems to me, that it is not a big thing, but I'm trying to get an answer since hours. The issue is when I want to use the iteration variable from the datatable for a nested loop. In the nested loop I try to create for every row the same dynamic amount of columns. Probably it becomes more clear when I show some code:</p> <pre><code>&lt;rich:dataTable styleClass="waiDataTable" width="700" rowClasses="odd,even" value="#{reportingModel.reportingDoiPoolRows}" var="reportingDoiPoolRow" rendered="#{not empty reportingModel.reportingDoiPoolRows}"&gt; &lt;!-- Start header of the data-table --&gt; &lt;f:facet name="header"&gt; &lt;rich:columnGroup&gt; &lt;rich:column rowspan="2"&gt; &lt;h:outputText value="Pool" /&gt; &lt;/rich:column&gt; &lt;c:forEach items="#{reportingModel.headerList}" var="item"&gt; &lt;rich:column colspan="2"&gt; &lt;h:outputText value="#{item}" /&gt; &lt;/rich:column&gt; &lt;/c:forEach&gt; &lt;rich:column breakRowBefore="true"&gt; &lt;h:outputText value="New" /&gt; &lt;/rich:column&gt; &lt;rich:column&gt; &lt;h:outputText value="Tot" /&gt; &lt;/rich:column&gt; &lt;c:forEach begin="1" end="#{reportingModel.headerList.size()-1}"&gt; &lt;rich:column&gt; &lt;h:outputText value="New" /&gt; &lt;/rich:column&gt; &lt;rich:column&gt; &lt;h:outputText value="Tot" /&gt; &lt;/rich:column&gt; &lt;/c:forEach&gt; &lt;/rich:columnGroup&gt; &lt;/f:facet&gt; &lt;!-- End header of the data-table --&gt; &lt;!-- Start values of the data-table --&gt; &lt;rich:column&gt; &lt;h:outputText value="#{reportingDoiPoolRow.doiPool.name}"&gt;&lt;/h:outputText&gt; &lt;/rich:column&gt; &lt;ui:repeat value="#{reportingDoiPoolRow.amountOfDois}" var="amount"&gt; &lt;rich:column style="text-align:right;"&gt; &lt;h:outputText value="#{amount}"/&gt; &lt;/rich:column&gt; &lt;/ui:repeat&gt; &lt;!-- Start values of the data-table --&gt; &lt;f:facet name="footer"&gt; &lt;rich:columnGroup&gt; &lt;rich:column style="text-align:left;"&gt;Totals&lt;/rich:column&gt; &lt;rich:column style="text-align:right;"&gt; &lt;h:outputText value="12"&gt;&lt;/h:outputText&gt; &lt;/rich:column&gt; &lt;rich:column style="text-align:right;"&gt; &lt;h:outputText value="12"&gt;&lt;/h:outputText&gt; &lt;/rich:column&gt; &lt;/rich:columnGroup&gt; &lt;/f:facet&gt; </code></pre> <p></p> <p>The issue is in the following block:</p> <pre><code>&lt;rich:column&gt; &lt;h:outputText value="#{reportingDoiPoolRow.doiPool.name}"&gt;&lt;/h:outputText&gt; &lt;/rich:column&gt; &lt;ui:repeat value="#{reportingDoiPoolRow.amountOfDois}" var="amount"&gt; &lt;rich:column style="text-align:right;"&gt; &lt;h:outputText value="#{amount}"/&gt; &lt;/rich:column&gt; &lt;/ui:repeat&gt; </code></pre> <p>The name (<code>reportingDoiPoolRow.doiPool.name</code>) is rendered well but every column inside the <code>ui:repeat</code> is not rendered. It seems that I can't use the reportingDoiPoolRow variable for another iteration. The Collections which I use for the table are both from the type <code>ArrayList</code> (long). Thank you very much for your help.</p>
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    1. COYou should probably use `<rich:columns>` to render dymanic number of columns: http://livedemo.exadel.com/richfaces-demo/richfaces/columns.jsf?tab=usage&cid=1222466
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    2. CO@MagnusTengdahl `<rich:columns>` are unfortunatelly out of Final scope. I got that here: [link](https://community.jboss.org/message/592975)
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