p:dataTable no records found

Question

I have a data table in a dialog.

When user clicked on the Detail link, the dialog with a data table should be displayed.

Here is the code:

<h:form>
   <h:dataTable value="#{messageBean.messagesList}" var="msg">

<h:column>
     <f:facet name="header">Detail</f:facet>
     <p:commandLink action="#{messageBean.fetchSelectedMessage(msg.msgId)}" value="#{msg.summary}" />
        </h:column>
   </h:dataTable>
</h:form>

And this is messageBean.fetchSelectedMessag(...):

@ManagedBean
@SessionScoped
public class MessageBean {

...
private List<Messages> messagesList;
private List<Messages> selectedMessage;

public void fetchSelectedMessage(String msgId) {
    String sql = "SELECT * FROM messages WHERE msgId=?";
    selectedMessage = jdbcTemplate.query(sql, new Object[]{msgId}, new BeanPropertyRowMapper<Messages>(Messages.class));
    System.out.println("fetched selected message== " + selectedMessage); //correct
    //open dialog sucucessfully
    RequestContext context = RequestContext.getCurrentInstance();
    context.execute("PF('dlg1').show();");
}
//getter/setters

Then this dialog should opens (and open successfully, but displays nothing)

<p:dialog widgetVar="dlg1" modal="true" height="100">
    <p:dataTable var="msg1" value="#{messageBean.selectedMessage}">

        <p:column headerText="id">
            <h:outputText value="#{msg1.msgId}"/>
        </p:column>

        <p:column headerText="to person">
            <h:outputText value="#{msg1.toPerson}"/>
        </p:column>

    </p:dataTable>

</p:dialog>

Why the dialog data table can't show any thing?

the selectedMessage is a list of messages type and is not null.

Usually the dialog has already been drawn on page load, it's just hidden, so you still need to AJAX update it if the model changes. Adding an `update` to your commandLink might fix it. — DavidS, Jul 04 '15 at 15:54
No, the update attribute must match a component ID on the page. You will want to learn more about this, as it's an essential part of using AJAX with JSF. Here is an example http://stackoverflow.com/questions/14227681/primefaces-ajax-update-of-panel-from-another-form. — DavidS, Jul 04 '15 at 16:02
And BalusC wrote a good guide here http://stackoverflow.com/questions/8634156/cannot-find-component-with-expression-foo-referenced-from-bar-fajax-con. — DavidS, Jul 04 '15 at 16:04
@DavidS is right. Start with some basic jsf/ajax tutorials before diving into the deep — Kukeltje, Jul 05 '15 at 08:47

score 1 · Accepted Answer · answered Jul 05 '15 at 08:14

1

You need to update the dialog after each click:

<p:commandLink ... process="@this" update=":msgForm:dlgPanel" onComplete="PF('dlg1').show();"/>

answered Jul 05 '15 at 08:14

Sajad

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p:dataTable no records found

1 Answers1