Laravel 广播通知 - 尝试发送通知时出现“array_key_exists()”错误

Question

我正在尝试在数据更改时向用户发送广播通知。但是每次我尝试发送通知时，都会收到此错误：

array_key_exists(): The first argument should be either a string or an integer.

这是我的通知：

class MyNotification extends Notification
{
    use Queueable;

    public $games;

    public $title;
    public $summary;
    public $url;

    public function __construct($games)
    {
        $this->games = $games;

        $this->title = "Your games";
        $this->summary = "Games for {$games[0]->team}";
        $this->url = "/some/url";
    }

    public function via($notifiable)
    {
        return ['mail','broadcast','database'];
    }

    /**
     * Get the mail representation of the notification.
     *
     * @param  mixed  $notifiable
     * @return \Illuminate\Notifications\Messages\MailMessage
     */
    public function toMail($notifiable)
    {
        return (new MailMessage)
            ->subject($this->title)
            ->line($this->summary);
    }

    /**
     * Get the voice representation of the notification.
     *
     * @param  mixed  $notifiable
     * @return PushMessage
     */
    public function toPush($notifiable)
    {
        // ...
    }

    public function toBroadcast($notifiable)
    {
        return new BroadcastMessage($this->toArray($notifiable));
    }

    /**
     * Get the array representation of the notification.
     *
     * @param  mixed  $notifiable
     * @return array
     */
    public function toArray($notifiable)
    {
        return [
            'icon' => 'fa fa-calendar',
            'text' => $this->summary,
            'title' => $this->title,
            'url' => $this->url
        ];
    }
}

当我从via数组中删除“广播”时，一切正常。我不知道我做错了什么！有人可以帮忙吗？谢谢！

编辑 这是我完整的堆栈跟踪

Stack trace:
  1. ErrorException->() /var/www/html/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Concerns/HasAttributes.php:321
  2. array_key_exists() /var/www/html/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Concerns/HasAttributes.php:321
  3. Illuminate\Database\Eloquent\Model->getAttribute() /var/www/html/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Model.php:1396
  4. Illuminate\Database\Eloquent\Model->getKey() /var/www/html/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Model.php:1406
  5. Illuminate\Database\Eloquent\Model->getQueueableId() /var/www/html/vendor/laravel/framework/src/Illuminate/Support/HigherOrderCollectionProxy.php:60
  6. Illuminate\Support\HigherOrderCollectionProxy->Illuminate\Support\{closure}() [internal]:0
  7. array_map() /var/www/html/vendor/laravel/framework/src/Illuminate/Support/Collection.php:638
  8. Illuminate\Support\Collection->map() /var/www/html/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Collection.php:254
  9. Illuminate\Database\Eloquent\Collection->map() /var/www/html/vendor/laravel/framework/src/Illuminate/Support/HigherOrderCollectionProxy.php:61
 10. Illuminate\Support\HigherOrderCollectionProxy->__call() /var/www/html/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Collection.php:549
 11. Illuminate\Database\Eloquent\Collection->getQueueableIds() /var/www/html/vendor/laravel/framework/src/Illuminate/Queue/SerializesAndRestoresModelIdentifiers.php:25
 12. Illuminate\Notifications\Notification->getSerializedPropertyValue() /var/www/html/vendor/laravel/framework/src/Illuminate/Queue/SerializesModels.php:23
 13. Illuminate\Notifications\Notification->__sleep() [internal]:0
 14. serialize() /var/www/html/vendor/laravel/framework/src/Illuminate/Queue/Queue.php:139
 15. Illuminate\Queue\Queue->createObjectPayload() /var/www/html/vendor/laravel/framework/src/Illuminate/Queue/Queue.php:110
 16. Illuminate\Queue\Queue->createPayloadArray() /var/www/html/vendor/laravel/framework/src/Illuminate/Queue/Queue.php:88
 17. Illuminate\Queue\Queue->createPayload() /var/www/html/vendor/laravel/framework/src/Illuminate/Queue/SyncQueue.php:40
 18. Illuminate\Queue\SyncQueue->push() /var/www/html/vendor/laravel/framework/src/Illuminate/Queue/Queue.php:44
 19. Illuminate\Queue\Queue->pushOn() /var/www/html/vendor/laravel/framework/src/Illuminate/Broadcasting/BroadcastManager.php:127
 20. Illuminate\Broadcasting\BroadcastManager->queue() /var/www/html/vendor/laravel/framework/src/Illuminate/Events/Dispatcher.php:267
 21. Illuminate\Events\Dispatcher->broadcastEvent() /var/www/html/vendor/laravel/framework/src/Illuminate/Events/Dispatcher.php:190
 22. Illuminate\Events\Dispatcher->dispatch() /var/www/html/vendor/laravel/framework/src/Illuminate/Notifications/Channels/BroadcastChannel.php:51
 23. Illuminate\Notifications\Channels\BroadcastChannel->send() /var/www/html/vendor/laravel/framework/src/Illuminate/Notifications/NotificationSender.php:146
 24. Illuminate\Notifications\NotificationSender->sendToNotifiable() /var/www/html/vendor/laravel/framework/src/Illuminate/Notifications/NotificationSender.php:105
 25. Illuminate\Notifications\NotificationSender->Illuminate\Notifications\{closure}() /var/www/html/vendor/laravel/framework/src/Illuminate/Support/Traits/Localizable.php:19
 26. Illuminate\Notifications\NotificationSender->withLocale() /var/www/html/vendor/laravel/framework/src/Illuminate/Notifications/NotificationSender.php:107
 27. Illuminate\Notifications\NotificationSender->sendNow() /var/www/html/vendor/laravel/framework/src/Illuminate/Notifications/NotificationSender.php:79
 28. Illuminate\Notifications\NotificationSender->send() /var/www/html/vendor/laravel/framework/src/Illuminate/Notifications/ChannelManager.php:39
 29. Illuminate\Notifications\ChannelManager->send() /var/www/html/vendor/laravel/framework/src/Illuminate/Support/Facades/Facade.php:261
 30. Illuminate\Support\Facades\Facade->__callStatic() /var/www/html/app/Http/Controllers/Basketball/BasketballGameController.php:458
 31. App\Http\Controllers\Basketball\BasketballGameController->updateJudges() /var/www/html/vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
 32. call_user_func_array() /var/www/html/vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
 33. Illuminate\Routing\Controller->callAction() /var/www/html/vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:45
 34. Illuminate\Routing\ControllerDispatcher->dispatch() /var/www/html/vendor/laravel/framework/src/Illuminate/Routing/Route.php:219
 35. Illuminate\Routing\Route->runController() /var/www/html/vendor/laravel/framework/src/Illuminate/Routing/Route.php:176
 36. Illuminate\Routing\Route->run() /var/www/html/vendor/laravel/framework/src/Illuminate/Routing/Router.php:681
 37. Illuminate\Routing\Router->Illuminate\Routing\{closure}() /var/www/html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:130
 38. Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}() /var/www/html/vendor/laravel/framework/src/Illuminate/Auth/Middleware/Authenticate.php:43
 39. Illuminate\Auth\Middleware\Authenticate->handle() /var/www/html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:171
 40. Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}() /var/www/html/vendor/barryvdh/laravel-cors/src/HandleCors.php:58
 41. Barryvdh\Cors\HandleCors->handle() /var/www/html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:171
 42. Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}() /var/www/html/vendor/laravel/framework/src/Illuminate/Routing/Middleware/SubstituteBindings.php:41
 43. Illuminate\Routing\Middleware\SubstituteBindings->handle() /var/www/html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:171
 44. Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}() /var/www/html/vendor/laravel/framework/src/Illuminate/Routing/Middleware/ThrottleRequests.php:59
 45. Illuminate\Routing\Middleware\ThrottleRequests->handle() /var/www/html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:171
 46. Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}() /var/www/html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:105
 47. Illuminate\Pipeline\Pipeline->then() /var/www/html/vendor/laravel/framework/src/Illuminate/Routing/Router.php:683
 48. Illuminate\Routing\Router->runRouteWithinStack() /var/www/html/vendor/laravel/framework/src/Illuminate/Routing/Router.php:658
 49. Illuminate\Routing\Router->runRoute() /var/www/html/vendor/laravel/framework/src/Illuminate/Routing/Router.php:624
 50. Illuminate\Routing\Router->dispatchToRoute() /var/www/html/vendor/laravel/framework/src/Illuminate/Routing/Router.php:613
 51. Illuminate\Routing\Router->dispatch() /var/www/html/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php:170
 52. Illuminate\Foundation\Http\Kernel->Illuminate\Foundation\Http\{closure}() /var/www/html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:130
 53. Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}() /var/www/html/vendor/fideloper/proxy/src/TrustProxies.php:57
 54. Fideloper\Proxy\TrustProxies->handle() /var/www/html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:171
 55. Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}() /var/www/html/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TransformsRequest.php:21
 56. Illuminate\Foundation\Http\Middleware\TransformsRequest->handle() /var/www/html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:171
 57. Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}() /var/www/html/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/ValidatePostSize.php:27
 58. Illuminate\Foundation\Http\Middleware\ValidatePostSize->handle() /var/www/html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:171
 59. Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}() /var/www/html/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/CheckForMaintenanceMode.php:62
 60. Illuminate\Foundation\Http\Middleware\CheckForMaintenanceMode->handle() /var/www/html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:171
 61. Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}() /var/www/html/vendor/barryvdh/laravel-cors/src/HandleCors.php:58
 62. Barryvdh\Cors\HandleCors->handle() /var/www/html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:171
 63. Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}() /var/www/html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:105
 64. Illuminate\Pipeline\Pipeline->then() /var/www/html/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php:145
 65. Illuminate\Foundation\Http\Kernel->sendRequestThroughRouter() /var/www/html/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php:110
 66. Illuminate\Foundation\Http\Kernel->handle() /var/www/html/public/index.php:55

编辑 2

在我的通知构造函数中，我有一个使用复合键的模型。一旦我删除了这一行：$this->games = $games;，并编辑$this->summary到某个字符串 - 它就可以了！$games是 Model 的集合Game。

但我不知道为什么会这样？！

Answer 1

如果我理解正确，原因很简单，因为您的模型使用了eloquent 不支持的复合键。

所以这就是我认为在我对整个通知/广播模块的知识有限的情况下实际发生的事情。

1. 您尝试发送您的通知，然后调度员将您的通知传递给广播管理器，因为您指定在您的 via 方法中广播它
2. 然后广播管理器将尝试将您的MyNotification事件推送到队列中
3. 要将事件推送到队列中，它将尝试创建尝试序列化它的通知类的有效负载
4. Notification您正在扩展的基类实际上实现了Illuminate\Queue\SerializesModels特征，因此将自动尝试序列化通知类属性中的所有模型
5. 在尝试序列化您雄辩的Game对象集合时，该集合然后尝试调用集合中的getQueueableId每个模型，然后失败，因为它尝试根据您的复合键检索属性

至于解决方案，我会说尝试删除模型上的复合键，因为在使用 eloquent 时它似乎无法按预期工作。

// in Game model
protected $primaryKey = 'id';

根据这个关于队列的文档，你也可以尝试broadcastWith在你的MyNotification类上添加一个方法，虽然我不确定这是否会绕过SerializeModelstrait的序列化方法。

// in MyNotification
public function broadcastWith()
{
    return ['id' => $this->id];
}

或者根据您自己的反复试验$this->games，您可以将其转换为数组，而不是使用集合进行初始化。毕竟，最终，您的toBroadcast方法才是真正控制广播的方法。

$this->games = $games->toArray();

您的最后一个选择是覆盖模型的getQueueableId()方法Game。

// in Game Model
public function getQueueableId()
{
    return $this->id; 

    // or if you still want to utilize your composite keys. UNTESTED
    return $this->key_one.$this->key_two;
}