Execute p:commandLink action before onclick event?

Question

I have a p:commandLink which launches a dialog on click. Further there is an action, which must be executed before launching the dialog, as the dialog

Answer 1

With the oncomplete attribute and the ajax update attribute.

<p:commandLink action="#{service.computePrefetch(_var)}" update="dlgId" oncomplete="dlg.show()"/>

Execution order:

onclick->action->update->oncomplete

BalusC posted a detailed sequence Execution order of events when pressing PrimeFaces p:commandButton