weixin/app/Repositories/Models/Info/Notice.php

<?php

namespace App\Repositories\Models\Info;

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

class Notice extends Model
{
    /**
     * @var string
     */
    protected $table = 'info_notices';

    protected $guarded = [];

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

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