good/money/models/cost_line.py

# Copyright 2016 上海开阖软件有限公司 (http://www.osbzr.com)
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).

from odoo import fields, models, api
from odoo import exceptions


class CostLine(models.Model):
    _name = 'cost.line'
    _description = "采购销售费用"

    @api.depends('amount', 'tax_rate')
    def _compute_tax(self):
        """
        计算字段根据 amount 和 tax_rate 是否变化进行判定tax 是否需要重新计算
        :return:
        """
        for s in self:
            s.tax = s.amount * s.tax_rate * 0.01

    def _inverse_subtotal(self):
        """
        计算字段根据 amount 和 tax_rate 是否变化进行判定tax 是否需要重新计算
        :return:
        """
        for s in self:
            s.amount = 100 * s.subtotal / (100 + s.tax_rate)

    partner_id = fields.Many2one('partner', '供应商', ondelete='restrict',
                                 required=True,
                                 help='采购/销售费用对应的业务伙伴')
    category_id = fields.Many2one('core.category', '类别',
                                  required=True,
                                  ondelete='restrict',
                                  domain=[('type', '=', 'expense')],
                                  help='分类：采购')
    amount = fields.Float('金额',
                          required=True,
                          digits='Amount',
                          help='采购/销售费用金额')
    tax_rate = fields.Float(
        '税率(%)',
        default=lambda self: self.env.user.company_id.import_tax_rate,
        help='默认值取公司进项税率')
    tax = fields.Float('税额',
                       digits='Amount',
                       compute=_compute_tax, store=True,
                       help='采购/销售费用税额')
    subtotal = fields.Float('价税合计', digits='Amount', compute='_compute_all_currency', inverse=_inverse_subtotal, store=True)
    note = fields.Char('备注',
                       help='该采购/销售费用添加的一些标识信息')
    company_id = fields.Many2one(
        'res.company',
        string='公司',
        change_default=True,
        default=lambda self: self.env.company)

    standard_amount = fields.Float('本位币金额', compute='_compute_all_currency',
                                   store=True, readonly=True,
                                   digits='总数',
                                   help='本位币的成交金额')
    currency_id = fields.Many2one('res.currency',
                                  '外币币别', store=True, compute='_compute_all_currency',
                                  help='外币币别')
    currency_rate = fields.Float('汇率', digits='Price', store=True, compute='_compute_all_currency')
    standard_subtotal = fields.Float('本位币价税合计', digits='Price', store=True, compute='_compute_all_currency')

    @api.onchange('partner_id', 'category_id')
    def _onchange_partner_id_category_id(self):
        err = ''
        for record in self:
            if record.partner_id and record.category_id:
                partner_c = record.partner_id.s_category_id.account_id.currency_id or self.env.company.currency_id
                category_c = record.category_id.account_id.currency_id or self.env.company.currency_id
                if partner_c != category_c:
                    err += "采购费用行 供应商%s的币种%s 与类别币种%s不相同\n" % (
                        record.partner_id.name, partner_c.name, category_c.name)
        if err:
            raise exceptions.ValidationError(err)

    @api.depends('category_id', 'amount', 'tax','tax_rate')
    def _compute_all_currency(self):
        for record in self:
            record.currency_id = record.category_id.account_id.currency_id or self.env.company.currency_id
            record.currency_rate = record.currency_id.rate
            record.standard_amount = record.amount * record.currency_rate
            record.subtotal = record.amount + record.tax
            record.standard_subtotal = record.subtotal * record.currency_id.rate
            # if (record.tax > 0 or record. tax_rate) and record.currency_id !=self.env.company.currency_id:
            #     raise UserError('外币费用的税率只能为0')