code: def save(self, *args, **kwargs):
          
          current_activable_value = getattr(self, self.ACTIVATABLE_FIELD_NAME)
          is_active_changed = self.id is None or self.__original_activatable_value != current_activable_value
          self.__original_activatable_value = current_activable_value
  
          ret_val = super(BaseActivatableModel, self).save(*args, **kwargs)
  
          # Emit the signals for when the is_active flag is changed
          if is_active_changed:
              model_activations_changed.send(self.__class__, instance_ids=[self.id], is_active=current_activable_value)
          if self.activatable_field_updated:
              model_activations_updated.send(self.__class__, instance_ids=[self.id], is_active=current_activable_value)
  
          return ret_val
docs: A custom save method that handles figuring out when something is activated or deactivated.