//表连接
//查询出学生、班级、校区、记录表的所有数据
$data=Jf_record::find()
    ->join('join','jf_stu','jf_record.sid=jf_stu.sid')
    ->join('join','jf_class','jf_stu.cid=jf_class.cid')
    ->join('join','jf_school','jf_class.xid=jf_school.xid')
    ->select('*')
    ->where(['jf_record.re_id'=>$re_id])
    ->asArray()
    ->one();
    echo $data['sname'].'<br>';
    echo $data['sex'].'<br>';
    echo $data['rtime'].'<br>';
    echo $data['cname'].'<br>';
    echo $data['school'].'<br>';

//获取部门名字 用于view页面
public function getDept()
{
  return $this->hasOne(Dept::className(), ['dept_id' => 'dept_id']);
}

['attribute'=>'dept_id',
    'label'=>'部门',
    'value'=>'dept.dept_name',
],