firefly-iii/app/Services/Internal/Update/CurrencyUpdateService.php

<?php
/**
 * CurrencyUpdateService.php
 * Copyright (c) 2019 thegrumpydictator@gmail.com
 *
 * This file is part of Firefly III (https://github.com/firefly-iii).
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

declare(strict_types=1);

namespace FireflyIII\Services\Internal\Update;

use FireflyIII\Models\TransactionCurrency;
use Log;

/**
 * Class CurrencyUpdateService
 * @codeCoverageIgnore
 */
class CurrencyUpdateService
{
    /**
     * Constructor.
     */
    public function __construct()
    {
        if ('testing' === config('app.env')) {
            Log::warning(sprintf('%s should not be instantiated in the TEST environment!', get_class($this)));
        }
    }

    /**
     * @param TransactionCurrency $currency
     * @param array               $data
     *
     * @return TransactionCurrency
     */
    public function update(TransactionCurrency $currency, array $data): TransactionCurrency
    {
        $currency->code           = $data['code'];
        $currency->symbol         = $data['symbol'];
        $currency->name           = $data['name'];
        $currency->enabled        = $data['enabled'];
        $currency->decimal_places = $data['decimal_places'];
        $currency->save();

        return $currency;
    }

}