invoiceninja/app/Models/PaymentLibrary.php

<?php
/**
 * Invoice Ninja (https://invoiceninja.com)
 *
 * @link https://github.com/invoiceninja/invoiceninja source repository
 *
 * @copyright Copyright (c) 2019. Invoice Ninja LLC (https://invoiceninja.com)
 *
 * @license https://opensource.org/licenses/AAL
 */

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

/**
 * Class PaymentLibrary.
 */
class PaymentLibrary extends BaseModel
{

    protected $casts = [
        'visible' => 'boolean',
        'updated_at' => 'timestamp',
        'created_at' => 'timestamp',
        'deleted_at' => 'timestamp',
    ];

    /**
     * @return \Illuminate\Database\Eloquent\Relations\HasMany
     */
    public function gateways()
    {
        return $this->hasMany(Gateway::class, 'payment_library_id');
    }

}