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PO<p:dialog> rendered property not getting updated using <p:commandLink update=":dialog">
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  1. PO<p:dialog> rendered property not getting updated using <p:commandLink update=":dialog">
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    copied!<p>I have a <code>&lt;h:dataTable&gt;</code> which has a <code>&lt;p:commandLink&gt;</code> within it. I need to fetch some data from the database when <code>&lt;p:commandLink&gt;</code> is clicked and display it within a pop-up for which I am using a <code>&lt;p:dialog&gt;</code>.</p> <pre><code>&lt;h:form id="form"&gt; &lt;h:dataTable width="80%" value="#{controller.items}" var="a" binding="#{bean.table}" rendered="#{not empty controller.items}"&gt; &lt;h:column&gt; &lt;h:outputText value="#{a.date}" /&gt; &lt;/h:column&gt; &lt;h:column&gt; &lt;h:outputText value="#{a.name}" /&gt; &lt;/h:column&gt; &lt;h:column&gt; &lt;p:commandLink value="View" action="#{controller.getData()}" update=":form:dialog" oncomplete="w_dialog.show();return false;"&gt; &lt;/p:commandLink&gt; &lt;/h:column&gt; &lt;/h:dataTable&gt; &lt;p:dialog header="Test" widgetVar="w_dialog" width="600px" height="500px" id="dialog" modal="true" draggable="true" appendToBody="true" rendered="#{sessionScope.sample ne null}"&gt; &lt;ui:include src="sample.xhtml"/&gt; &lt;/p:dialog&gt; &lt;/h:form&gt; </code></pre> <p>I need to capture the data of the row which is clicked and get data from the database. My bean and controller classes are as follows:</p> <pre><code>@Named @SessionScoped public class Bean implements Serializable { private HtmlDataTable table; // getters and setters } @Named @SessionScoped public class Controller implements Serializable { @Inject private Bean bean; public void getData(){ bean.getTable().getRowData(); SampleClass sample=new SampleClass(); // fetches data from database and populates it within sample instance FacesContext context = FacesContext.getCurrentInstance(); context.getExternalContext().getSessionMap() .put("sample", sample); } } </code></pre> <p>The <code>&lt;p:dialog&gt;</code> includes a file called <code>sample.xhtml</code> which has references to <code>SampleClass</code>. So I used <code>rendered</code> property in <code>&lt;p:dialog&gt;</code> to avoid <code>NullPointer Exception</code> on loading my xhtml page.Also, <code>sample</code> of type <code>SampleClass</code> is inserted into the sessionMap only after the controller method <code>getData()</code> is executed on clicking the <code>&lt;p:commandLink&gt;</code>. </p> <p>The problem is that the pop-up never gets displayed even after the method <code>getData()</code> is executed and <code>sample</code> is inserted into the SessionMap.</p> <p>I have used <code>update=:form:dialog</code> to update the dialog after the <code>&lt;p:commandLink&gt;</code> is clicked. But it seems that the <code>rendered</code> property of the dialog never gets updated. So i cannot see the <code>&lt;p:dialog&gt;</code>.</p> <p>Am I missing something?</p>
 

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