Auto Timestamp Fields

# models.py

from django.db import models

class Article(models.Model):
    title = models.CharField(max_length=200)
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

    def __str__(self):
        return self.title
  

# models.py (abstract base)

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 Post(TimeStampedModel):
    title = models.CharField(max_length=200)
  

# Django Shell

>>> from blog.models import Article
>>> a = Article.objects.create(title='Hello')
>>> a.created_at is not None
True
>>> a.save()
>>> a.updated_at <= timezone.now()
True