code: def get_context_data(self, **kwargs):
          ''' Add the list of registrations for the given series '''
  
          # Update the site session data so that registration processes know to send return links to
          # the view class registrations page.  set_return_page() is in SiteHistoryMixin.
          self.set_return_page('viewregistrations',_('View Registrations'),event_id=self.object.id)
  
          context = {
              'event': self.object,
              'registrations': EventRegistration.objects.filter(
                  event=self.object,
                  cancelled=False
              ).order_by('registration__customer__user__first_name', 'registration__customer__user__last_name'),
          }
          context.update(kwargs)
          return super(EventRegistrationSummaryView, self).get_context_data(**contextf get_context_data(self, **kwargs):
          ''' Add the list of registrations for the given series '''
  
          # Update the site session data so that registration processes know to send return links to
          # the view class registrations page.  set_return_page() is in SiteHistoryMixin.
          self.set_return_page('viewregistrations',_('View Registrations'),event_id=self.object.id)
  
          context = {
              'event': self.object,
              'registrations': EventRegistration.objects.filter(
                  event=self.object,
                  cancelled=False
              ).order_by('registration__customer__user__first_name', 'registration__customer__user__last_name'),
          }
          context.update(kwargs)
          return super(EventRegistrationSummaryView, self).get_context_data(**context)
docs: Add the list of registrations for the given series