<?php
/**
 * Created by PhpStorm.
 * User: chenye
 * Date: 2018/5/29
 * Time: 09:58
 * 班级表
 */
class SClass extends MyActiveRecord
{
    public static function model($className = __CLASS__)
    {
        return parent::model($className);
    }

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

    /**
     * 获取班级列表
     * @param string $select
     * @param string $condition
     * @return array|null
     *
     */
    public function getClassList($select = '', $condition = '')
    {
        $criteria = new CDbCriteria();
        $criteria->select = $select;
        $criteria->addCondition($condition);
        $result = $this->findAll($criteria);
        if($result){
            $info = getAttributes($result);
        }else{
            $info = array();
        }
        return $info;
    }

    /**
     * 获取班级名称
     * @param $classId
     * @return string
     */
    public function getClassName($classId){

        $sql = "select class_name from class where class_id = {$classId}";
        return (string)$this->getCommandBuilder()->createSqlCommand($sql)->queryScalar();
    }

    public function getClassInfo($classId){
        $sql = "select class_name,grade,class_id from class where class_id = {$classId}";
        return $this->getCommandBuilder()->createSqlCommand($sql)->queryRow();
    }
}