<?php

class SJuniorMathCommonTopic extends MyActiveRecord {

    public static function model($className = __CLASS__)
    {
        return parent::model($className);
    }

    public function tableName()
    {
        return 'junior_math_common_topic';
    }

    /**
     * 共性题数据
     * @param $examId
     * @param $classId
     * @return array|null
     */
    public function getCommonTopic($examId, $classId){

        $criteria = new CDbCriteria();
        $criteria->select = 'topic_id,tymhd_id';
        $criteria->addCondition('exam_id='.$examId);
        $criteria->addCondition('class_id='.$classId);
        $criteria->order = 'topic_order ASC';

        $result = getAttributes($this->findAll($criteria));
        return $result;
    }
}