disable a particular button in a datatable, jsf - jsf

Question

I have a data table with with two columns- Title and Action
Title is populated from a list in a managed bean and for each title in the list the datatable has a button called Confirm under Action column.
When the user clicks on the Confirm button, a dialog is displayed with additional information and another button called Submit.
If the user hits the Submit button inside that dialog a variable confirmDate is set in the backing bean, of the confirmDate is not null, I need to disable the particular Confirm button under the Action column in the main data table. Right now if I disable it, all the Confirm button is getting disabled. How do I disable only the selected confirm button. Really appreciate your help on this.
main data table
<h:panelGrid id="notificationList" width="100%">
<h:panelGroup >
<p:dataTable var="dt" value="#
{myBean.listAll}" id="titles" rowKey="#{dt.id}">
<f:facet name="header">
<h:outputText value = "Title List"/>
</f:facet>
<p:column headerText ="Title">
<h:outputText value="#{dt.title}"/>
</p:column>
<p:column headerText="Action">
<p:commandButton id="nID"
value="Confirm"
oncomplete="myDialog.show();"
process="#this"
disabled= "#{not empty dt.confirmDate}
update="#form">
<f:setPropertyActionListener value="#{dt}" target="#
{myBean.selectedTitle}"/>
</p:commandButton>
</p:column>
</p:dataTable>
</h:panelGroup>
</h:panelGrid>

Answer 1

Hard to say with your code, maybe all your dt objects which you retrieve via listAll are identical objects. How do you set up the list?
Anyhow this should work (simplified):
<p:dialog widgetVar="dlg">
<p:commandButton value="Submit" action="#{myBean.updateNotificationConfirmDate}" oncomplete="dlg.hide()"
update="notificationList" />
</p:dialog>
<p:dataTable id="notificationList" var="dt" value="#{myBean.tableData}">
<p:column>
<p:commandButton value="Confirm" process="#this" disabled="#{!empty dt.confirmDate}" update="#form"
oncomplete="dlg.show();">
<f:setPropertyActionListener value="#{dt}" target="#{myBean.selectedTitle}" />
</p:commandButton>
</p:column>
</p:dataTable>
And the backing bean (whatever your DT is :)):
#ManagedBean
#ViewScoped
public class MyBean {
private List<DT> tableData = new ArrayList<DT>();
private DT selectedTitle;
public MyBean() {
tableData.add(new DT(1L, "title1", null));
tableData.add(new DT(2L, "title2", null));
tableData.add(new DT(3L, "title3", null));
tableData.add(new DT(4L, "title4", null));
}
public DT getSelectedTitle() {
return selectedTitle;
}
public void setSelectedTitle(DT selectedTitle) {
this.selectedTitle = selectedTitle;
}
public List<DT> getTableData() {
return tableData;
}
public void updateNotificationConfirmDate() {
selectedTitle.setConfirmDate(Calendar.getInstance());
}
}