<?php
/**
 * @author: CeeFee
 * @description: 学期
 */

class SSemester extends ModelA {
	public function __construct()
	{
		parent::__construct();
	}
	
	public function getCurrentSemester()
	{

		return $this->conn->createQuery()
					->from('semester')
					->where("status = '1'")
					->limit(1)
					->query()
					->read();
	}
        public function getSemester($semid){
            return $this->conn->createQuery()
					->from('semester')
					->where("semester_id = {$semid}")
					->limit(1)
					->query()
					->read();
        }
        
        public function getCodeByExamId($examId){
            $code = 0;
            $sql = "select s.status,s.refer_code from exam e join semester s on e.semester_id = s.semester_id where e.exam_id = '{$examId}'";
            $data = $this->conn->createQuery($sql)->queryRow();
            if($data && $data['status'] != 1){
                $code = $data['refer_code']?$data['refer_code']:0;
            }
            return $code;
            
        }
}