def get_contact_phones(self, batch):

        """

        Retrieve all phone records on file for the batch contact, to

        be presented as options for user to choose from when making a

        new order.

        """

        customer_required = self.new_order_requires_customer()

        phones = []

        if customer_required:

            if batch.customer:

                phones = batch.customer.phones

        else:

            if batch.person:

                phones = batch.person.phones

        return [self.normalize_phone(phone)

                for phone in phones]

    def normalize_phone(self, phone):

        """

        Normalize the given phone record to simple data dict, for

        passing around via JSON etc.

        """

        return {

            'uuid': phone.uuid,

            'type': phone.type,

            'number': phone.number,

            'preference': phone.preference,

            'preferred': phone.preference == 1,

        }