<?php

namespace app\common\model;

use think\Db;
use think\Model;

/**
 * 群组
 */
class UniversityCourseModel extends Model
{
    // 表名
    protected $name = 'university_course';
    // 开启自动写入时间戳字段
    protected $autoWriteTimestamp = false;
    // 定义时间戳字段名
    protected $createTime = false;
    protected $updateTime = false;
    protected $deleteTime = false;

    public function getImageAttr($value, $data)
    {
        return cdnurl($value);
    }

    public function getImagesAttr($value, $data)
    {
        $value = explode(',',$value);
        foreach ($value as &$v){
            $v = cdnurl($v);
        }
        return $value;
    }

    public function chapter()
    {
        return $this->hasMany(UniversityCourseChapterModel::class, 'course_id', 'id');
    }

    public function apply()
    {
        return $this->hasOne(UniversityCourseApplyModel::class, 'course_id', 'id');
    }
}