async def getpromote_discount(ns):
    """展示促销产品折扣"""
    db = DBPools()
    async with db.sqlorContext('kboss') as sor:
        if ns:
            ns['del_flg'] = '0'
            ns['sort'] = 'create_at desc'
            promote_discount = await sor.R('promote_discount', ns)
            for i in promote_discount['rows']:
                product = await sor.R('product', {'id': i['productid'],'del_flg':'0'})
                if len(product) >= 1:
                    i['productid'] = product[0]
                continue
            return {'status': True, 'data': promote_discount}
        return {'status': False, 'msg': '参数错误'}
ret = await getpromote_discount(params_kw)
return ret