validation - PrimeFaces - Don't close dialog when messages appears -

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how can set primefaces dialog not hide, when there "required-messages" open? @ moment, dialog closing clicking on "speichern" button, , when reopened, messages appears... let dialog open, when there unfilled required fields:

<h:panelgrid id="createnewpat" columns="3" cellpadding="1" style="margin:0 auto;">       <h:outputtext for="versnr" value="versicherten-nr.:" />       <p:inputmask id="versnr" value="#{patientenbean.versnr}" required="true"/>       <p:message for="versnr" />     <p:commandbutton id="savebtn" value="speichern"           action="#{patientenbean.createpatient}"           oncomplete="if (!args.messageoccured) createnewpat.hide();"           update="patform" />     <p:commandbutton id="resetbtn" value="reset" type="reset" />  </h:panelgrid>

if want dialog not close, commandbutton (or component updates dialog's container) has update inside dialog. not update dialog's container, example:

<p:dialog id="dlg">     <p:panel id="pntest">         // content here         <p:commandbutton update=":#{p:component('pntest')}"/>     </p:panel> </p:dialog>

if not, have open dialog again in oncomplete:

oncomplete="(args.messageoccured)? createnewpat.show(): createnewpat.hide(); "

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