from django.db import models

class TimeStampedModel(models.Model):
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)
    class Meta:
        abstract = True

class ActiveModel(TimeStampedModel):
    is_active = models.BooleanField(default=True)
    class Meta:
        abstract = True