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POPrimeFaces 3.5: row-specific context menu in datatable
 

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  1. POPrimeFaces 3.5: row-specific context menu in datatable
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    <p>I'm working on a web application using JSF and PrimeFaces. One of the pages displays a table of entities, and I'm supposed to add a context menu to the table. </p> <p>More specifically: The last column contains a <code>p:menuButton</code> whose content depends on the respective row. The menuItems are stored as a <code>ui:composition</code>in another file, and I'm supposed to simply include them in the context menu.</p> <p>The menuitems are dynamic, however. The entities do have a boolean member called enabled. For enabled entities, Edit, Delete, and Disable are displayed. For disabled entities, there's only Enable.</p> <p>With the code below, the context menu is displayed, but they the content is only updated if I select another row via left click. Right-clicking does select rows, but the selectedPerson of the backingbean is not updated.</p> <p>Apparently there were some changes in PrimeFaces 3.5. I found many references to the contextMenu ajax event.</p> <p>But when I add it to the datatable like this:</p> <pre><code>&lt;p:ajax event="contextMenu" update=":persons-form:contextMenu" /&gt; </code></pre> <p>.. the menu appears but disappears immediately. Presumably, because some update method is getting called. In the short timespan it's displayed, I can see it still showing the old menuitems.</p> <p><strong>So, to summarize: How can I make a contextmenu working as it should in a datatable with PrimeFaces 3.5? Meaning, right-clicking should select a row and also update the menu before displaying it, as the menuitems depend on the row data.</strong></p> <p>​ ​</p> <p><strong>personList.xhtml:</strong></p> <p> </p> <pre><code> &lt;p:contextMenu id="contextMenu" for="persons"&gt; &lt;ui:include src="/layout/personActionMenu.xhtml"&gt; &lt;ui:param name="thePerson" value="#{personListBean.selectedPerson}"/&gt; &lt;/ui:include&gt; &lt;/p:contextMenu&gt; &lt;p:dataTable id="persons" value="#{personListBean.allPersons}" var="p" rowKey="#{p.id}" selection="#{personListBean.selectedPerson}" selectionMode="single" rowStyleClass="#{p.enabled ? '' : 'disabledTableItem'}"&gt; &lt;p:ajax event="rowSelect" update=":persons-form:contextMenu"/&gt; &lt;p:column&gt; &lt;f:facet name="header"&gt;Name&lt;/f:facet&gt; &lt;h:outputText value="#{p.name}" /&gt; &lt;/p:column&gt; &lt;p:column&gt; &lt;p:menuButton value="Actions"&gt; &lt;ui:include src="/layout/personActionMenu.xhtml"&gt; &lt;ui:param name="thePerson" value="#{p}"/&gt; &lt;/ui:include&gt; &lt;/p:menuButton&gt; &lt;/p:column&gt; &lt;/p:dataTable&gt; &lt;/h:form&gt; </code></pre> <p><strong>personActionMenu.xhtml:</strong></p> <pre><code>&lt;ui:composition xmlns="http://www.w3.org/1999/xhtml" xmlns:u="http://java.sun.com/jsf/composite/ui" xmlns:ui="http://java.sun.com/jsf/facelets" xmlns:f="http://java.sun.com/jsf/core" xmlns:h="http://java.sun.com/jsf/html" xmlns:p="http://primefaces.org/ui"&gt; &lt;p:menuitem rendered="#{personListBean.isEnabled(thePerson)}" outcome="edit.xhtml" value="Edit" icon="ui-icon-gear"&gt; &lt;f:param name="id" value="#{thePerson.id}" /&gt; &lt;/p:menuitem&gt; &lt;p:menuitem actionListener="#{personListBean.deletePerson(thePerson)}" value="Delete" update=":person-form" icon="ui-icon-close" rendered="#{personListBean.isEnabled(thePerson)}"/&gt; &lt;p:menuitem actionListener="#{personListBean.toggleEnabled(thePerson)}" update=":persons-form" value="#{personListBean.toggleEnabledMenuItemLabel(thePerson)}" /&gt; &lt;/ui:composition&gt; </code></pre>
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