BroadbandSaler/app/Events/SendMessage.php

<?php

namespace App\Events;

use Illuminate\Broadcasting\Channel;
use Illuminate\Broadcasting\InteractsWithSockets;
use Illuminate\Broadcasting\PresenceChannel;
use Illuminate\Broadcasting\PrivateChannel;
use Illuminate\Contracts\Broadcasting\ShouldBroadcast;
use Illuminate\Foundation\Events\Dispatchable;
use Illuminate\Queue\SerializesModels;
use Illuminate\Support\Facades\Log;

class SendMessage implements ShouldBroadcast  
{  
    use InteractsWithSockets, SerializesModels;  

    public $message;  

    public function __construct($message)  
    {  
        $this->message = $message;  
        Log::info('Message sent:', ['message' => $message]);
    }  

    // 定义广播到哪个频道  
    public function broadcastOn()  
    {  
        return new Channel('chat-channel');//注意：前端需要加上数据库前缀
    }  
    
    // 定义广播的事件名  
    public function broadcastAs()  
    {  
        return 'message-sent';  
    }  
}