Laravel通知-延迟电子邮件发送并在满足条件时取消 [英] Laravel Notifications - delay email sending and cancel if condition met

问题描述

我有一个应用程序，我要在其中发送一个推送通知，如果用户已登录该应用程序就可以了-但是，如果不是，或者他们没有在X分钟内阅读通知，我想发送给他们发电子邮件.

I have an app where I am sending a push notification which is fine if the user is logged into the application - however, if they're not / if they have not read the notification within X minutes I'd like to send them an email.

我要解决的方法是使用Laravel Notifications创建邮件，广播和数据库通知.在toMail()方法上，我将延迟返回一个可邮寄邮件-

The way I am going about this is to use Laravel Notifications to create a mail, broadcast & database notification. On the toMail() method I'm returning a mailable with a delay -

public function toMail($notifiable)
{
    return (new \App\Mail\Order\NewOrder($this->order))
        ->delay(now()->addMinutes(10));
}

几分钟后，电子邮件将发送但是，在发送继续之前，我想检查一下是否已将推送/数据库通知标记为已读和如果已取消电子邮件发送.我能想到的唯一方法是绑定到Laravel中烘焙的MessageSending事件-

After the minutes are up, the email will send but, before the send goes ahead I'd like to perform a check to see if the push/database notification has already been marked as read and if it has cancel the email send. The only way I can think to do this is to bind to the MessageSending event that is baked into Laravel -

// listen for emails being sent
'Illuminate\Mail\Events\MessageSending' => [
    'App\Listeners\Notification\SendingEmail'
],

唯一的问题是此侦听器收到一个Swift邮件事件，而不是我发送的原始邮件，因此我不知道如何取消它.有什么想法要先感谢吗?

The only problem is this listener receives a Swift mail event and not the original mailable I was dispatching so I don't know how to cancel it. Any ideas and thanks in advance?

推荐答案

类扩展了通知

public function via($notifiable)
{
    if($this->dontSend($notifiable)) {
        return [];
    }
    return ['mail'];
}

public function dontSend($notifiable)
{
    return $this->appointment->status === 'cancelled';
}

EventServiceProvider类

Class EventServiceProvider

protected $listen = [
    NotificationSending::class => [
        NotificationSendingListener::class,
    ],
];

NotificationSendingListener类

Class NotificationSendingListener

public function handle(NotificationSending $event)
{
    if (method_exists($event->notification, 'dontSend')) {
        return !$event->notification->dontSend($event->notifiable);
    }
    return true;
}

有关更多详细信息，请参见文章在Laravel中处理延迟的通知

For more details look article Handling delayed notifications in Laravel

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