invoiceninja/app/Ninja/Presenters/PaymentPresenter.php

<?php

namespace App\Ninja\Presenters;

use Carbon;
use Utils;

class PaymentPresenter extends EntityPresenter
{
    public function amount()
    {
        return Utils::formatMoney($this->entity->amount, $this->entity->client->currency_id);
    }

    public function completedAmount()
    {
        return Utils::formatMoney($this->entity->getCompletedAmount(), $this->entity->client->currency_id);
    }

    public function currencySymbol()
    {
        return Utils::getFromCache($this->entity->currency_id ? $this->entity->currency_id : DEFAULT_CURRENCY, 'currencies')->symbol;
    }

    public function client()
    {
        return $this->entity->client ? $this->entity->client->getDisplayName() : '';
    }

    public function payment_date()
    {
        return Utils::fromSqlDate($this->entity->payment_date);
    }

    public function month()
    {
        return Carbon::parse($this->entity->payment_date)->format('Y m');
    }

    public function method()
    {
        if ($this->entity->account_gateway) {
            return $this->entity->account_gateway->gateway->name;
        } elseif ($this->entity->payment_type) {
            return trans('texts.payment_type_' . $this->entity->payment_type->name);
        }
    }

    public function calendarEvent()
    {
        $data = parent::calendarEvent();
        $payment = $this->entity;
        $invoice = $payment->invoice;

        $data->title = trans('texts.payment') . ' ' . $invoice->invoice_number . ' | ' . $this->amount() . ' | ' . $this->client();
        $data->start = $payment->payment_date;
        $data->borderColor = $data->backgroundColor = '#7FB800';

        return $data;
    }
}