good/goods/models/goods_class.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 api, fields, models
from odoo.exceptions import ValidationError, UserError


class GoodsClass(models.Model):
    _name = "goods.class"
    _inherit = ['mail.thread']
    _description = "商品分类"
    _order = "sequence, name"

    @api.constrains('parent_id')
    def _check_category_recursion(self):
        if not self._check_recursion():
            raise ValidationError('错误 ! 您不能创建循环分类')

    name = fields.Char(required=True, string='名字')
    parent_id = fields.Many2one('goods.class', string='上级分类', index=True)
    child_id = fields.One2many('goods.class', 'parent_id', string='子分类')
    sequence = fields.Integer('顺序')
    type = fields.Selection(
        [('view', '节点'),
         ('normal', '常规')],
        '类型',
        required=True,
        default='normal',
        help='商品分类的类型，分为节点和常规，只有节点的分类才可以建下级商品分类，常规分类不可作为上级商品分类')
    note = fields.Text('备注')
    image = fields.Binary(attachment=True)
    image_medium = fields.Binary(string="Medium-sized image", attachment=True)
    image_small = fields.Binary(string="Small-sized image", attachment=True)
    tax_rate = fields.Float('税率(%)',  help='商品分类上的税率')

    _sql_constraints = [
        ('name_uniq', 'unique(name)', '分类名称不能重复'),
    ]