exchange/app/SupplierBookingItem.php

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class SupplierBookingItem extends Model
{
    protected $fillable = [
        'id',
        'china_bankslip_url',
        'book_id',
        'bank_in_amount',
        'date',
        'details',
        'supplierbooking_id'
    ];

    public function bookingsupplier()
    {
        return $this->belongsTo('App\BookingSupplier');
    }
    

}