Calling Primefaces dialog box from Managed Bean function

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You can, by using the RequestContext (or PrimeFaces if you are using the version 6.2 or higher) class.

Suppose you have the following:

<p:dialog id="myDialogID" widgetVar="myDialogVar">
....
</p:dialog>

So the way you do in the facelet itself, i.e. onclick=myDialogVar.show();, the same can be done in your managed bean like so:

For PrimeFaces <= 3.x

RequestContext context = RequestContext.getCurrentInstance();
context.execute("myDialogVar.show();");

For PrimeFaces >= 4.x to PrimeFaces < 6.2 (as per @dognose and @Sujan)

RequestContext context = RequestContext.getCurrentInstance();
context.execute("PF('myDialogVar').show();");

For PrimeFaces >= 6.2

PrimeFaces current = PrimeFaces.current();
current.executeScript("PF('myDialogVar').show();");

This is for using targeted dialogs. If you just need to show a message without giving preference to any custom dialog, then you can do it this way:

FacesMessage message = new FacesMessage(FacesMessage.SEVERITY_INFO, "Message Title", "Message body");

// For PrimeFaces < 6.2
RequestContext.getCurrentInstance().showMessageInDialog(message);

// For PrimeFaces >= 6.2
PrimeFaces.dialog().showMessageDynamic(message);

You can pass in arguments and set callbacks as well. Refer to the showcase examples in the link.

See also:

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