I want to show a popup with the requiredMessages of some inputText fields when I click on a submit button. But just only in case of there are those messages. I have tried with bean variable and javascript on the oncomplete tag, but I'm not able to make it work properly. If I put visible="true" in p:dialog, the popup is always displayed, although I try to control it from the commandButton. Now, I have this, but the popup is never displayed:
<h:inputText id="Scheme"
required="true"
requiredMessage="Required.">
</h:inputText>
<h:commandButton id="submitModify" value="#{msg['systemdetail.modify']}"
action="#{sistem.modify}"
oncomplete="if (#{facesContext.maximumSeverity != null}) {dlg1.show();}">
</h:commandButton>
<p:dialog id="popup"
style="text-align:center"
widgetVar="dlg1"
modal="true">
<h:messages layout="table"/>
</p:dialog>
How can I do this? Thanks in advance.
Standard JSF and PrimeFaces does not support request based EL evaluation in on*
attributes. RichFaces is the only who supports that. Besides, the standard JSF <h:commandButton>
does not have an oncomplete
attribute at all. You're probably confusing with PrimeFaces <p:commandButton>
There are several ways to achieve this:
Check the condition in the visible
attribute of the <p:dialog>
instead.
<p:dialog visible="#{not empty facesContext.messageList}">
or if you want to show validation messages only instead of all messages
<p:dialog visible="#{facesContext.validationFailed}">
Use PrimeFaces <p:commandButton>
instead, the PrimeFaces JS API supports the #{facesContext.validationFailed}
condition through the args
object as well:
<p:commandButton ... oncomplete="if (args.validationFailed) dlg1.show()" />
If you need to check for what kind of messages, here is a way that I made work with primefaces. Since primefaces oncomplete is called after update, by updating the component holding the javascript function, the javascript function can be rebuilt using the latest #facesContext.maximumSeverity} values before executed.
<p:commandButton
oncomplete="executeAfterUpdate()"
update="updatedBeforeOnComplete"/>
<h:panelGroup id="updatedBeforeOnComplete">
<script language="JavaScript" type="text/javascript">
//
function executeAfterUpdate(){
if (#{facesContext.maximumSeverity==null
or facesContext.maximumSeverity.ordinal=='1'})
{
// your code to execute here
someDialog.show();
}
}
//
</script>
</h:panelGroup>
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