ShipmentIn replace create method

# -*- coding: utf-8 -*-

from trytond.model import Workflow, ModelView, ModelSQL, fields
from trytond.pyson import Eval, Or, Bool, And, Not,Equal
from trytond.transaction import Transaction
from trytond.pool import Pool


__all__ = ['ShipmentIn']

class ShipmentIn(Workflow, ModelSQL, ModelView):
    "Supplier Shipment"
    __name__ = 'stock.shipment.in'

    is_donation = fields.Boolean('By donation',
        help='Check if the shipment is a donation')


    @classmethod
    def create(cls, vlist):
        pool = Pool()
        Sequence = pool.get('ir.sequence')
        Config = pool.get('stock.configuration')

        vlist = [x.copy() for x in vlist]
        config = Config(1)
        for values in vlist:
            if values['is_donation']:
                values['code'] = Sequence.get_id(config.shipment_in_donation_sequence)
            else:
                values['code'] = Sequence.get_id(config.shipment_in_sequence)

        shipments = super(ShipmentIn, cls).create(vlist)
        cls._set_move_planned_date(shipments)
        return shipments