Laravel。如何获取数据库通知的ID？

Question

我使用数据库通知，在通知代码中我有方法 toDatabase:

public function toDatabase($notifiable)
    {
        $user = \App\SomeUsers::where('id', $notifiable->id)->first();
        return [
             'message' => $message,
        ];
    }

它returns正在发送到via当前通知方法中提到的数据库通道的数据数组：

public function via($notifiable)

    {
        return ['database'];
    }

一切如常，但是......问题是我需要当前通知文件中数据库中的通知ID，以便我可以将消息（从当前通知文件）广播到前端，其中包含数据库中通知的ID （所以我可以以某种方式识别它以标记为已读）。如何获得？

P.S。而且，数据库通知可能是可排队的，所以……好像拿不到id…… P.P.S 换句话说我需要包含 ["id" => "id of just added corresponding database notification"].

的广播消息

Answer 1

<?php

namespace App\Notifications;

use App\Channels\SocketChannel;
use Illuminate\Bus\Queueable;
use Illuminate\Notifications\Notification;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Notifications\Messages\MailMessage;
use Redis;

class MyCustomNotification extends Notification implements ShouldQueue
{
    use Queueable;

    /**
     * Create a new notification instance.
     *
     * @return void
     */


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

    /**
     * Get the notification's delivery channels.
     *
     * @param  mixed  $notifiable
     * @return array
     */
    public function via($notifiable)
    {
        $channels = ['database'];
        return $channels;
    }

    /**
     * Get the mail representation of the notification.
     *
     * @param  mixed  $notifiable
     * @return \Illuminate\Notifications\Messages\MailMessage
     */
    public function toMail($notifiable)
    {

    }

    /**
     * Get the array representation of the notification.
     *
     * @param  mixed  $notifiable
     * @return array
     */
    public function toDatabase($notifiable)
    {
        info("This is the current notification ID, it's generated right here before inserting to database");
        info($this->id);
        return [

            'id'     =>  **$this->id**,
            'message' => 'Notification message',

        ];
    }


}

$this->id 解决问题。

https://laracasts.com/discuss/channels/laravel/get-database-notification-id-in-push-notification

P.S。我想提请注意一个事实。当我发布这个问题时，我知道 $this->id，但我无法让它工作。原因是：当我从顶层深入到我的目标代码时，我对代码进行了更改，但它们并不适用。原因是排队。您需要重新启动 laravel worker 以将设置应用为 Laravel 缓存逻辑，或者您需要暂时删除那些：实施 ShouldQueue 并使用 Queueable。

Answer 2

为了检索 Laravel 中通知 table 的实际 ID，您需要将 ID 列转换为字符串。首先，您需要创建一个名为 Notification.

的新模型

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class Notification extends Model
{
    /**
     * Cast variables to specified data types
     *
     * @var array
     */
    protected $casts = [
        'data' => 'array',
        'id' => 'string'
    ];
}

这样，如果您检索模型，它将为您提供 table 的实际 ID。

 {
        "id": "212829d6-5579-449f-a8e5-e86f0a08e0f9",
        "type": "App\Notifications\CronFailureNotification",
        ....
    }

Answer 3

接受的答案在Laravel 8中没有为我提供解决方案。要正确获取通知的 ID，请监听 NotificationSent 事件并在那里检索 ID。示例代码：

EventServiceProvider.php

protected $listen = [
    NotificationSent::class => [
        DispatchBroadcastNotification::class
    ]
];

DispatchBroadcastNotification.php

<?php

namespace App\Listeners;

use App\Notifications\BroadcastNotification;
use Illuminate\Notifications\Events\NotificationSent;

class DispatchBroadcastNotification
{
    /**
     * Create the event listener.
     *
     * @return void
     */
    public function __construct()
    {
        //
    }

    /**
     * Handle the event.
     *
     * @param  NotificationSent $event
     * @return void
     */
    public function handle(NotificationSent $event)
    {
        $event->notifiable->notify(
            new BroadcastNotification($event->notification->id)
        );
    }
}

BroadcastNotification.php

<?php

namespace App\Notifications;

use App\Models\Tenant\User;
use Illuminate\Contracts\Broadcasting\ShouldBroadcast;
use Illuminate\Notifications\Messages\BroadcastMessage;
use Illuminate\Notifications\Notification;

class BroadcastNotification extends Notification implements ShouldBroadcast
{
    public $notificationId;

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

    /**
     * Get the notification's delivery channels.
     *
     * @param  mixed  $notifiable
     * @return array
     */
    public function via(User $notifiable): array
    {
        return ['broadcast'];
    }

    public function toBroadcast(User $notifiable)
    {
        return new BroadcastMessage([
            'notificationId' => $this->notificationId
        ]);
    }
}

Laravel。如何获取数据库通知的ID？

Laravel. How to get id of database notification?

laravel

laravel-notification