recursive_deactivate.py

class BaseModel(TimeStampedModel):

    objects = BaseManager()

    is_active = models.BooleanField(
        "활성화",
        default=True
    )

    class Meta:
        abstract = True
        ordering = ('-created',)

    def delete(self, delete_in_db=True):
        if delete_in_db:
            super().delete()
        else:
            self.is_active = False
            self.save()

    def deactivate(self):
        related_models = [
            f.related_model for f in self._meta.get_fields()
            if (f.one_to_many or f.one_to_one or f.many_to_many)
            and f.auto_created and not f.concrete
        ]

        for model in related_models:
            model.deactivate(model)

        self.is_active = False
        self.save(self)
        

# Let all models inherit BaseModel

# select one of models and call deactivate()
# ex) option = Option.objects.first()
#     option.deactivate()
        
# It occurs Error
AttributeError                            Traceback (most recent call last)
<ipython-input-2-dc35a6f16623> in <module>()
----> 1 option.deactivate()

/Users/Chois/Dropbox/Workspace/django/spacegraphy-project/spacegraphy/spacegraphy/models.py in deactivate(self)
     38
     39         for model in related_models:
---> 40             model.deactivate(model)
     41             model.save(model)
     42

/Users/Chois/Dropbox/Workspace/django/spacegraphy-project/spacegraphy/spacegraphy/models.py in deactivate(self)
     39         for model in related_models:
     40             model.deactivate(model)
---> 41             model.save(model)
     42
     43         self.is_active = False

/Users/Chois/.pyenv/versions/spacegraphy/lib/python3.5/site-packages/django/db/models/base.py in save(self, force_insert, force_update, using, update_fields)
    660                     )
    661
--> 662         using = using or router.db_for_write(self.__class__, instance=self)
    663         if force_insert and (force_update or update_fields):
    664             raise ValueError("Cannot force both insert and updating in model saving.")

/Users/Chois/.pyenv/versions/spacegraphy/lib/python3.5/site-packages/django/db/utils.py in _route_db(self, model, **hints)
    270                         return chosen_db
    271             instance = hints.get('instance')
--> 272             if instance is not None and instance._state.db:
    273                 return instance._state.db
    274             return DEFAULT_DB_ALIAS

AttributeError: type object 'Item' has no attribute '_state'