public function wocaotuijian(){
        $list=Db::table('xc_tuijiansum')->alias('a')
        ->join('xc_member me','a.uid=me.uid','left')
        ->where(['a.success'=>2])
        ->field('a.id,me.nicheng,a.tid,a.time')->order('a.time desc')->select();

        foreach($list as $k=>$v){
            $n=Db
 
::table('xc_member')->where(['uid'=>$v['tid']])->value('nicheng');
            array_push($list[$k],$n);
        }
        $this->assign('list',$list);
        return $this->fetch('zgxc/wokao');
    }