library/arrival_advices/models/arrival_advices.py

# -*- coding: utf-8 -*-
from odoo import models, fields, api
from odoo.exceptions import ValidationError
from odoo.exceptions import UserError

# 销货订单确认状态可选值
ORDER_STATES = [
    ('draft', '草稿'),
    ('done', '已确认'),
    ('in', '已入库'),
    ('cancel', '已作废')]

# 字段只读状态
READONLY_STATES = {
    'done': [('readonly', True)],
    'allocated': [('readonly', True)],
    'cancel': [('readonly', True)],
}


class Arrival_advices(models.Model): 
    _name = 'arrival.advices'
    _description = '到货报告单'

    order_line = fields.One2many('purchase.order.line', 'order_id',  states={'cancel': [('readonly', True)]})

    partner_id = fields.Many2one('res.partner', required=True, states=READONLY_STATES)

    company_id = fields.Many2one('res.company', 'Company', required=True, index=True, states=READONLY_STATES)
    

    state = fields.Selection(ORDER_STATES, '确认状态', readonly=True,
                             help="到货通知单的确认状态", index=True,
                             copy=False, default='draft')


class Arrival_advices_line(models.Model):
    _name ='arrival.advices.line'
    _description ='到货通知'

    notice_id = fields.Many2one('arrival.advices', index=True, string="通知号",ondelete='cascade')

    product_id = fields.Many2one('purchase.order.line','产品' ,ondelete='cascade',required=True,                              
                                  help='对应的购货订单行')
    lot = fields.Char('批次')      
    qty = fields.Float('商品数量')