Deleting Records (delete, soft-delete patterns)

# Hard delete — permanent
# post = Post.objects.get(pk=1)
# post.delete()  # Permanently removed from database

# Bulk delete
# Post.objects.filter(published=False).delete()
# Returns: (5, {'blog.Post': 5})  # 5 posts deleted

# Soft-delete pattern (recommended for production)
# class Post(models.Model):
#     title = models.CharField(max_length=200)
#     is_deleted = models.BooleanField(default=False)
#     deleted_at = models.DateTimeField(null=True, blank=True)
#
#     # Override delete for soft-delete
#     def delete(self, *args, **kwargs):
#         self.is_deleted = True
#         self.deleted_at = timezone.now()
#         self.save()
#
#     # Hard delete when needed
#     def hard_delete(self):
#         super().delete()

# Custom manager to exclude deleted records
# class ActiveManager(models.Manager):
#     def get_queryset(self):
#         return super().get_queryset().filter(is_deleted=False)

# class Post(models.Model):
#     # ...
#     objects = ActiveManager()  # Default: only active
#     all_objects = models.Manager()  # Include deleted

# Post.objects.all()        # Only non-deleted
# Post.all_objects.all()    # Everything including deleted