bill/app/Models/Bill.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class Bill extends BaseModel
{
    public function shop()
    {
        return $this->belongsTo(Shop::class);
    }

    public function bill_type()
    {
        return $this->belongsTo(Category::class, 'type', 'id');
    }

    public function platform_type()
    {
        return $this->belongsTo(Category::class, 'platform', 'id');
    }

    public function entry_admin()
    {
        return $this->belongsTo(Admin::class, 'entry_admin_id', 'id');
    }

    public function check_admin()
    {
        return $this->belongsTo(Admin::class, 'check_admin_id', 'id');
    }

    public function order()
    {
        return $this->belongsTo(Order::class);
    }
}