code: def get_current_fields(self):
          
          if hasattr(self, 'current_fields') and self.current_fields:
              return self.current_fields
  
          field_attribute = 'list_{}_{}_fields'.format(self.kwargs.get('app'), self.kwargs.get('model'))
          current_fields = self.request.user.attributes.get_attribute(field_attribute, [])
          request_fields = self.request.POST.get('selected_fields', None)
  
          if request_fields and ','.join(current_fields) != request_fields:
              # TODO validate fields
              current_fields = request_fields.split(',')
              self.request.user.attributes.set_attribute(field_attribute, current_fields)
          elif request_fields:
              current_fields = request_fields.split(',')
  
          if not current_fields:
              config = self.get_model_config()
              current_fields = config.list_default_fields if config.list_default_fields else ['created_at', 'id']
  
          self.current_fields = current_fields
          return current_fields
docs: Get current list to be used