firefly-iii/app/Models/LinkType.php

<?php
/**
 * LinkType.php
 * Copyright (c) 2017 thegrumpydictator@gmail.com
 * This software may be modified and distributed under the terms of the
 * Creative Commons Attribution-ShareAlike 4.0 International License.
 *
 * See the LICENSE file for details.
 */

declare(strict_types=1);

namespace FireflyIII\Models;


use Illuminate\Database\Eloquent\Model;
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;

/**
 * @property int $journalCount
 * Class LinkType
 *
 * @package FireflyIII\Models
 */
class LinkType extends Model
{
    /**
     * The attributes that should be casted to native types.
     *
     * @var array
     */
    protected $casts
        = [
            'created_at' => 'date',
            'updated_at' => 'date',
            'deleted_at' => 'date',
            'editable'   => 'boolean',
        ];

    /** @var array */
    protected $fillable = ['name', 'inward', 'outward', 'editable'];

    /**
     * @param $value
     *
     * @return mixed
     * @throws NotFoundHttpException
     */
    public static function routeBinder($value)
    {
        if (auth()->check()) {
            $model = self::where('id', $value)->first();
            if (!is_null($model)) {
                return $model;
            }
        }
        throw new NotFoundHttpException;
    }

    public function transactionJournalLinks()
    {
        return $this->hasMany(TransactionJournalLink::class);
    }

}