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def random_string_generator(size=10, chars=string.ascii_lowercase + string.digits):
    return ''.join(random.choice(chars) for _ in range(size))


def unique_order_id_generator(instance):
    """
    This is for a Django project with an order_id field
    """
    order_new_id = random_string_generator()

    Klass = instance.__class__
    qs_exists = Klass.objects.filter(order_id=order_new_id).exists()
    if qs_exists:
        return unique_order_id_generator(instance)
    return order_new_id