lasthourcloud/app/Events/DatabaseStatusChanged.php

<?php

namespace App\Events;

use Illuminate\Broadcasting\InteractsWithSockets;
use Illuminate\Broadcasting\PrivateChannel;
use Illuminate\Contracts\Broadcasting\ShouldBroadcast;
use Illuminate\Foundation\Events\Dispatchable;
use Illuminate\Queue\SerializesModels;

class DatabaseStatusChanged implements ShouldBroadcast
{
    use Dispatchable, InteractsWithSockets, SerializesModels;

    public $userId;

    public function __construct($userId = null)
    {
        if (is_null($userId)) {
            $userId = auth()->user()->id ?? null;
        }
        if (is_null($userId)) {
            throw new \Exception('User id is null');
        }
        $this->userId = $userId;
    }

    public function broadcastOn(): array
    {
        return [
            new PrivateChannel("user.{$this->userId}"),
        ];
    }
}