update primefaces or jsf view after ajax call on submit button - jsf

Question

I am trying to update a primefaces form (wizard-first step) after an ajax command button request with no success. The command button that makes the actual ajax call is on a dialog. I would like after submitting the request to force my view to refresh.
The command button deletes a record from a datatable. It works fine, record is deleted but when dialog is hidden the datatable keeps displaying the deleted record. I would like to force it somehow to refresh. Any ideas? Could I do it from my backing bean reviewManagerBean.deleteProtocol() method?
Here is the code (my BackBean is viewScoped):
<h:form id="reviewManagerForm">
...
<pe:masterDetail id="masterDetail" level="#{reviewManagerBean.currentLevel}" showBreadcrumb="false" selectLevelListener="#{reviewManagerBean.levelListener}" >
<f:facet name="header" >
<h:panelGroup layout="block" style="margin-top: 10px;" >
<h:panelGroup styleClass="levelTitle ui-state-default ui-corner-all wizard-breadcrumbs#{reviewManagerBean.currentLevel eq 1 ? 'ui-state-hover' : ''}">
<h:outputText value="1: Protocol picker"/>
</h:panelGroup>
...
<p:messages id="mainMessagesPanel" showDetail="true" closable="true" />
</h:panelGroup>
</f:facet>
<pe:masterDetailLevel level="1">
<p:panel id="panel1" header="List of available protocols">
<p:dataTable id="protocolsDataTable" var="cRProtocol" rowKey="#{cRProtocol.revProtId}" value="#{reviewManagerBean.cRReviewProtocolList}"
widgetVar="protocolsTable"
...
selection="#{reviewManagerBean.selectedReviewProtocol}"
selectionMode="single" >
...
<p:ajax event="rowSelect" listener="#{reviewManagerBean.setSelectedRow}" />
<p:ajax event="rowUnselect" listener="#{reviewManagerBean.unsetSelectedRow}"/>
...
<p:column sortBy="#{cRProtocol.revProtTitle}" headerText="Title" style="width:200px;text-align:center;">
<h:outputText value="#{cRProtocol.revProtTitle}" />
</p:column>
...
<p:column>
<p:commandButton value="Delete" onclick="dlg5.show()"
update=":reviewManagerForm:deleteSingleProtocol"
disabled="#{reviewManagerBean.checkifProtocolIsOpen(cRProtocol)}"
ajax="true" process=":reviewManagerForm:deleteSingleProtocol" />
</p:column>
</p:dataTable>
</p:panel>
...
<p:dialog id="dialog-deleteprotocol" header="Delete Image Type" widgetVar="dlg5" dynamic="true" modal="true" resizable="false">
<p:panelGrid id="deleteSingleProtocol">
<p:row>
<p:column>
<h:outputText value="Id:" style="font-weight:bold; padding-right:10px" />
</p:column>
<p:column>
<h:outputText value="#{reviewManagerBean.selectedReviewProtocol.revProtId}" />
</p:column>
</p:row>
...
<p:column>
<p:commandButton id='protocolDelete'
value='Delete'
action='#{reviewManagerBean.deleteProtocol()}'
ajax="true"
onclick="dlg5.hide()" icon="ui-icon-disk"
update=":reviewManagerForm:protocolsDataTable"
process=":reviewManagerForm:deleteSingleProtocol" />
</p:column>
</p:row>
</p:panelGrid>
</p:dialog>

Answer 1

Your datatable should be re-rendered properly, you would have gotten an exception otherwise (something like component with id :reviewManagerForm:protocolsDataTable could not be found).
This means that #{reviewManagerBean.cRReviewProtocolList} will get called again. You need to remove the item from that list. This is appropriately done from #{reviewManagerBean.deleteProtocol}.
When #{reviewManagerBean.cRReviewProtocolList} is called after the removal, your datatable will get updated.