misc_pterodactyl-panel/app/Http/Requests/Admin/UserFormRequest.php

<?php
/**
 * Pterodactyl - Panel
 * Copyright (c) 2015 - 2017 Dane Everitt <dane@daneeveritt.com>.
 *
 * This software is licensed under the terms of the MIT license.
 * https://opensource.org/licenses/MIT
 */

namespace Pterodactyl\Http\Requests\Admin;

use Pterodactyl\Models\User;

class UserFormRequest extends AdminFormRequest
{
    /**
     * {@inheritdoc}
     */
    public function rules()
    {
        if ($this->method() === 'PATCH') {
            return User::getUpdateRulesForId($this->route()->parameter('user')->id);
        }

        return User::getCreateRules();
    }

    public function normalize($only = [])
    {
        if ($this->method === 'PATCH') {
            return array_merge(
                $this->intersect('password'),
                $this->only(['email', 'username', 'name_first', 'name_last', 'root_admin'])
            );
        }

        return parent::normalize();
    }
}