<?php

/**
 * 学期管理模型类
 * @author jiangfei
 * @date 2015-08-17 18:28:00
 * @company 上海风车教育有限公司.
 */

class Semester extends MyActiveRecord{

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

	public function tableName(){
		return "semester";
	}

	// 学生列表
	public function getSemesList($condition = "", $orderBy = "start_time desc"){
	
		$data		=	array();
		$criteria 	= 	new CDbCriteria();
		
		$total 	= 	$this->count($criteria);
		$pager 	= 	new CPagination($total);
		
		if($condition)
			$criteria->condition = $condition;
		if($orderBy)
			$criteria->order  = $orderBy;
	
		$pager->pageSize = 20;
		$pager->applyLimit($criteria);
		$data['result']=$this->findAll($criteria);
		$data['page']=$pager;
		$data['page_total']= $total;
		return  $data;
	}
        
	
	// 根据id获取学期名称
	public function getSemesterName($sid){
		$info	=	$this->findByPk($sid);
		
		if (empty($info)) {
			return null;
		} else {
			return $info->semester_name;
		}
	}
	
	
}