baoshi-was/app/OrderOnTop.php

<?php

namespace App;

use App\Traits\ModelTimeFormat;
use Illuminate\Database\Eloquent\Model;

class OrderOnTop extends Model
{
    //
    use ModelTimeFormat;

    protected $fillable = ['remarks','order_id'];

    public function order(){
        return $this->belongsTo('App\OrderIssue','order_id','id');
    }

}