How to extend django abstract base model by inheritance?

Question

I'm trying to extend my django abstract base model via inheritance, but django model's behavior that automatically sets abstract = True to abstract = False on any subclasses of abstract models is bothering me.

So the situation is

from django.db.models import Model from django.db.models.base import ModelBase Class TimeStampedModel(Model): created_time = DateTimeField() modified_time = DateTimeField() class Meta: abstract = True ordering = ('created_time',) get_latest_by = 'created_time' class RecordModelMetaClass(ModelBase): # NOT IMPLEMENTED YET pass class RecordModel(TimeStampedModel): __metaclass__ = RecordModelMetaClass recording_model = NotImplemented recording_fields = NotImplemented

Where the abstract TimeStampedModel is base model for abstract RecordModel.

The problem is that Django's metaclass ModelBase automatically converts RecordModel's abstract = True to abstract = False when RecordModel is defined in import time.

Is there any way to turn off this django's behavior?

what is ModelMase (to be corrected in ModelBase, BTW)?

Pynchia
– Pynchia

2015-05-12 08:12:23 +00:00
Commented May 12, 2015 at 8:12 — Pynchia
– Pynchia, Commented May 12, 2015 at 8:12
@Pynchia It's a metaclass for django.db.models.Model

June
– June

2015-05-12 08:15:16 +00:00
Commented May 12, 2015 at 8:15 — June
– June, Commented May 12, 2015 at 8:15

Daniel Roseman · Accepted Answer · 2015-05-12 08:16:27Z

Yes, and this is documented:

If the child wants to extend the parent’s Meta class, it can subclass it.

In your case:

class RecordModel(TimeStampedModel): class Meta(TimestampedModel.Meta): abstract = True

Collectives™ on Stack Overflow

How to extend django abstract base model by inheritance?

1 Answer 1

Comments

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Related