Laravel 广播没有返回

Question

当我向服务器发出请求时，它什么也不返回或有时显示：

参数 #1 不是数组

当我将 dd 放入 broadcastWith 时，它会显示数据，但不会返回任何内容。我该如何解决这个问题？

这是我的控制器：

    namespace App\Http\Controllers;
    use App\Message;
    use App\Events\MessageEvent;
    use Illuminate\Http\Request;

    class MessageController extends Controller
    {
        public function index(){

         return event(new MessageEvent([1,2,34]));
        }
    }`

还有我的活动：

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;

class MessageEvent implements ShouldBroadcast
{

    /**
     * Create a new event instance.
     *
     * @return void
     */
    public $data;

    public function __construct($message)
    {
        $this->data = $message;
    }

    /**
     * Get the channels the event should broadcast on.
     *
     * @return \Illuminate\Broadcasting\Channel|array
     */
    public function broadcastOn(){
        return ['message'];
    }

    public function broadcastAs(){
        return 'messageEvent';
    }

    public function broadcastWith(){
    return $this->data;
    }
}

Answer 1

1) broadcastOn() 应该返回一个频道实例。

public function broadcastOn() {
   return new PresenceChannel('messages');
   // or PrivateChannel() 
   // or Channel()
}

2) 默认情况下将返回所有public 属性，因此您不需要broadcastWith() 方法，除非您想操作数据。所以除非你想做这样的事情：

public function broadcastWith(){
   return [
      'myData' => data
   ];
}

---

In this answer我解释的比较详细。