code: def transfer_request_notifications(user):
      '''Notify user about pending transfer requests'''
      orgs = [o for o in user.organizations if o.is_member(user)]
      notifications = []
  
      qs = Transfer.objects(recipient__in=[user] + orgs, status='pending')
      # Only fetch required fields for notification serialization
      # Greatly improve performances and memory usage
      qs = qs.only('id', 'created', 'subject')
  
      # Do not dereference subject (so it's a DBRef)
      # Also improve performances and memory usage
      for transfer in qs.no_dereference():
          notifications.append((transfer.created, {
              'id': transfer.id,
              'subject': {
                  'class': transfer.subject['_cls'].lower(),
                  'id': transfer.subject['_ref'].id
              }
          }))
  
      return notificationf transfer_request_notifications(user):
      '''Notify user about pending transfer requests'''
      orgs = [o for o in user.organizations if o.is_member(user)]
      notifications = []
  
      qs = Transfer.objects(recipient__in=[user] + orgs, status='pending')
      # Only fetch required fields for notification serialization
      # Greatly improve performances and memory usage
      qs = qs.only('id', 'created', 'subject')
  
      # Do not dereference subject (so it's a DBRef)
      # Also improve performances and memory usage
      for transfer in qs.no_dereference():
          notifications.append((transfer.created, {
              'id': transfer.id,
              'subject': {
                  'class': transfer.subject['_cls'].lower(),
                  'id': transfer.subject['_ref'].id
              }
          }))
  
      return notifications
docs: Notify user about pending transfer requests