laravel-4 - Laravel 邮件监听器(发送前 - 能够取消)

Question

有没有办法使用 Laravel 的“Event”类在发送每封电子邮件之前运行一些代码？我还希望能够取消 Mail::send();。

当然，我可以在发送电子邮件之前执行此操作:

Event::fire('email.beforeSend');

然后我可以这样听:

Event::listen('email.beforeSend', function()
{
    //my code here
});

问题是我必须记住运行 Event::fire() 我不想这样做。就我而言，我会根据退订列表退回电子邮件地址，以确保我不会发送任何垃圾邮件。

Answer 1

对于 Laravel 5，如果您想取消发送消息，您可以监听 Illuminate\Mail\Events\MessageSending 事件并返回 false。

将其添加到您的EventServiceProvider

<?php

namespace App\Providers;

use Illuminate\Support\Facades\Event;
use Illuminate\Foundation\Support\Providers\EventServiceProvider as ServiceProvider;

class EventServiceProvider extends ServiceProvider
{
    /**
     * The event listener mappings for the application.
     *
     * @var array
     */
    protected $listen = [
        'Illuminate\Mail\Events\MessageSending' => [
            'App\Listeners\CheckEmailPreferences',
        ],
    ];
}

这是我的事件监听器，位于 App\Listeners\CheckEmailPreferences

<?php

namespace App\Listeners;

use App\User;
use Illuminate\Mail\Events\MessageSending;
use Illuminate\Support\Facades\App;

class CheckEmailPreferences
{
    public function handle( MessageSending $event )
    {
        //if app is in prod and we don't want to send any emails
        if(App::environment() === 'production' && ! env('SEND_MAIL_TO_CUSTOMERS')){
            return false;
        }

        //you can check if the user wants to receive emails here
    }
}