def _escape(value):
    if value is None:
        return None
    return str(value).replace("'", "''")

async def model_management_unlist(ns={}):
    """下架：listing_status 置为 0（统计归入待上架）"""
    model_id = ns.get('id')
    if not model_id:
        return {'status': False, 'msg': 'id is required'}

    db = DBPools()
    async with db.sqlorContext('kboss') as sor:
        try:
            update_sql = """
                UPDATE model_management SET listing_status = 0 WHERE id = '%s';
            """ % _escape(model_id)
            await sor.sqlExe(update_sql, {})
            return {'status': True, 'msg': 'model unlisted success'}
        except Exception as e:
            await sor.rollback()
            return {'status': False, 'msg': 'model unlist failed, %s' % str(e)}
    
ret = await model_management_unlist(params_kw)
return ret