osb/app/Models/Payment.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class Payment extends Model
{
	protected $table = 'ab_payment';
	protected $dates = ['date_payment'];
	protected $with = ['account.country.currency','items'];

	protected $appends = [
		'date_paid',
		'total',
	];

	protected $visible = [
		'date_paid',
		'id',
		'total',
	];

	public function account()
	{
		return $this->belongsTo(\App\User::class);
	}

	public function items()
	{
		return $this->hasMany(PaymentItem::class);
	}

	public function getDatePaidAttribute()
	{
		return $this->date_payment->format('Y-m-d');
	}

	public function getTotalAttribute()
	{
		return sprintf('%3.'.$this->currency()->rounding.'f',$this->total_amt);
	}

	public function currency()
	{
		return $this->account->country->currency;
	}
}