misc_pterodactyl-panel/app/Http/Requests/Api/Application/Nodes/DeleteNodeRequest.php

<?php

namespace Pterodactyl\Http\Requests\Api\Application\Nodes;

use Pterodactyl\Models\Node;
use Pterodactyl\Services\Acl\Api\AdminAcl;
use Pterodactyl\Http\Requests\Api\Application\ApplicationApiRequest;

class DeleteNodeRequest extends ApplicationApiRequest
{
    /**
     * @var string
     */
    protected $resource = AdminAcl::RESOURCE_NODES;

    /**
     * @var int
     */
    protected $permission = AdminAcl::WRITE;

    /**
     * Determine if the node being requested for editing exists
     * on the Panel before validating the data.
     */
    public function resourceExists(): bool
    {
        $node = $this->route()->parameter('node');

        return $node instanceof Node && $node->exists;
    }
}