firefly-iii/app/Support/Http/Controllers/ModelInformation.php

<?php
/**
 * ModelInformation.php
 * Copyright (c) 2018 thegrumpydictator@gmail.com
 *
 * This file is part of Firefly III.
 *
 * Firefly III is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Firefly III 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Firefly III. If not, see <http://www.gnu.org/licenses/>.
 */

declare(strict_types=1);

namespace FireflyIII\Support\Http\Controllers;

use FireflyIII\Models\TransactionJournal;
use FireflyIII\Models\TransactionType;
use FireflyIII\Repositories\Journal\JournalRepositoryInterface;

/**
 * Trait ModelInformation
 *
 */
trait ModelInformation
{
    /**
     * Is transaction opening balance?
     *
     * @param TransactionJournal $journal
     *
     * @return bool
     */
    protected function isOpeningBalance(TransactionJournal $journal): bool
    {
        return TransactionType::OPENING_BALANCE === $journal->transactionType->type;
    }

    /**
     * Checks if journal is split.
     *
     * @param TransactionJournal $journal
     *
     * @return bool
     */
    protected function isSplitJournal(TransactionJournal $journal): bool // validate objects
    {
        /** @var JournalRepositoryInterface $repository */
        $repository = app(JournalRepositoryInterface::class);
        $repository->setUser($journal->user);
        $count = $repository->countTransactions($journal);

        return $count > 2;
    }

}