crm/app/model/TrainClass.php

<?php

namespace app\model;

use think\Model;

class TrainClass extends Model
{

    public function getCoverAttr($value)
    {
        return 'https://'.config('app.ali_oss_bindurl').'/'.$value;
    }

    public function doneLog()
    {
        return $this->hasMany('TrainDoneLog','class_id');
    }
    public function TrainSumup()
    {
        return $this->hasMany('TrainSumup','class_id');
    }
    public function getQrcodeAttr($value)
    {
        if ($value) {
            return 'https://'.config('app.ali_oss_bindurl').'/'.$value;
        }
    }

    public function company()
    {
        return $this->belongsTo('Company','root_id','root_id')->bind(['company_name']);
    }

    public function lecturer(){
        return $this->hasOne(Lecturer::class, 'id','lecturer_id');
    }

    public function getIntroduceAttr($value)
    {
        $value = $value ?: '';
        return $value;
    }

    public function getImgsAttr($value)
    {
        $value = $value ? explode(',',$value) : [];
        $url = config('app.ali_oss_bindurl');
        foreach ($value as $key => $value) {
            $value[$key] = 'https://'.$url.'/'.$value;
        }
        return $value;
    }
}