async def addpromote_discount(ns):
    """配置促销产品折扣"""
    db = DBPools()
    async with db.sqlorContext('kboss') as sor:
        if ns:
            for i in eval(ns.get('productid')):
                ord = await sor.R('promote_discount',
                                  {'del_flg': '0', 'promotingid': ns['promotingid'], 'productid': i})
                if len(ord) >= 1:
                    return {'status': False, 'msg': '该产品已有折扣'}
                promotings = await sor.R('promoting', {'id': ns['promotingid']})
                date = await get_business_date(sor=None)
                if promotings[0]['end_date'] < date:
                    return {'status': False, 'msg': '该活动已过期'}
            for i in eval(ns.get('productid')):
                providerid = (await sor.R('product', {'id': i}))[0]['providerid']
                protocolid = (await sor.R('saleprotocol', {'offer_orgid': providerid}))[0]['id']
                product_discount = (await sor.R('product_salemode', {'protocolid': protocolid, 'productid': i}))[0]['discount']
                if product_discount is None:
                    ns = {'id': uuid(), 'promotingid': ns['promotingid'], 'productid': i, 'discount': ns['discount']}
                    await sor.C('promote_discount', ns)
                    continue
                if float(ns['discount']) <= float(product_discount):
                    return {'status': False, 'msg': '折扣率不能小于供应商折扣'}
                ns = {'id': uuid(), 'promotingid': ns['promotingid'], 'productid': i, 'discount': ns['discount']}
                await sor.C('promote_discount', ns)
            return {'status': True, 'msg': '配置成功'}
        return {'status': False, 'msg': '参数错误'}

ret = await addpromote_discount(params_kw)
return ret