weixin/app/Repositories/Models/Exam/Record.php

<?php

namespace App\Repositories\Models\Exam;

use App\Repositories\Models\Base\Admin;
use App\Repositories\Models\Model;

class Record extends Model
{
    /**
     * @var string
     */
    protected $table = 'exam_records';

    protected $guarded = [];

    /**
     * The attributes excluded from the model's JSON form.
     *
     * @var array
     */
    protected $hidden = [];

    protected $casts = [
        'result' => 'json',
        'banks' => 'json',
    ];

    public function paper()
    {
        return $this->belongsTo(Paper::class)->select(['id', 'name']);
    }

    public function admin()
    {
        return $this->belongsTo(Admin::class)->with(['shop'])->select(['id', 'name', 'username','shop_id']);
    }
}