def bulk_delete(cls, ids):
        """
        Override the general bulk_delete method because we need to delete them
        one at a time while also deleting them on Stripe.

        :param ids: List of ids to be deleted
        :type ids: list
        :return: int
        """
        delete_count = 0

        for id in ids:
            coupon = Coupon.query.get(id)

            if coupon is None:
                return 0

            # Delete on Stripe.
            stripe_response = PaymentCoupon.delete(coupon.code)

            # If successful, delete it locally.
            if stripe_response.get('deleted'):
                coupon.delete()
                delete_count += 1

        return delete_count