course/app/common/model/SubjectHomework.php

<?php

namespace app\common\model;

use app\BaseModel;
use support\Model;

class SubjectHomework extends BaseModel
{

    public function teacher()
    {
        return $this->hasOne(Teacher::class, 'id', 'teacher_id')->bind([
            'teacher_name',
            'teacher_account' => 'account'
        ]);
    }

    public function subject()
    {
        return $this->hasOne(Subject::class, 'id', 'subject_id')->bind([
            'subject_name',
            'english_name'
        ]);
    }

    /**
     * @desc 安排学生
     * @return \think\model\relation\HasMany
     */
    public function studentHomework()
    {
        return $this->hasMany(StudentHomework::class, 'subject_homework_id', 'id');
    }
    
}