category = models.CharField(max_length=64, null=True, blank=True, db_index=True)
created_at = models.DateTimeField(editable=False, db_index=True)
deleted_at = models.DateTimeField(auto_now_add=True, db_index=True)
category = models.CharField(max_length=64, null=True, blank=True, db_index=True)
created_at = models.DateTimeField(editable=False, db_index=True)
deleted_at = models.DateTimeField(auto_now_add=True, db_index=True)