from odoo import models, fields, api, _

from odoo.exceptions import ValidationError


class CustomAccountMoveLine(models.Model):
    _inherit = 'account.move'
    _description = "account move line"

    fapiao = fields.Char(string='发票号', size=20, copy=False, tracking=True, required=True)

    @api.constrains('fapiao')
    def _check_fapiao(self):
        for record in self:
            if record.fapiao and (len(record.fapiao) != 20 or not record.fapiao.isdecimal()):
                raise ValidationError(_("Fapiao number is an 20-digit number. Please enter a correct one."))

    @api.model_create_multi
    def create(self, vals):
        for val in vals:
            val['name'] = self.env['ir.sequence'].next_by_code('account.move') or '/'
        # 因为供应商与客户支付创建流程是先创建move line在修改来填充account_payment与move line的关联
        return super(CustomAccountMoveLine, self).create(vals)