Laravel事件系統的使用

aba66發表於2021-12-29
Laravel事件

在 EventServiceProvider 裡註冊（app/Providers/EventServiceProvider.php）

protected $listen = [
        Registered::class => [
            SendEmailVerificationNotification::class,
        ],
        'App\Events\Test' => [
            'App\Listeners\EventListener',
        ],
    ];

使用命令列來生成事件與監聽器

$ php artisan event:generate

此時將生成兩個檔案

1、App/Events/Test.php（事件）

編輯事件

<?php

namespace App\Events;

use App\Models\User;
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 Test
{
  use Dispatchable, InteractsWithSockets, SerializesModels;

  /**
 * Create a new event instance. * * @return void
 */  public function __construct($id)
 {  
     echo '觸發事件成功！---------'.$id;
     $this->id = $id;
  }

  /**
 * Get the channels the event should broadcast on. * * @return \Illuminate\Broadcasting\Channel|array
 */  public function broadcastOn()
 {  return new PrivateChannel('channel-name');
  }
}

2、app/Listeners/EmailVerified.php（監聽器）

編輯監聽器

<?php

namespace App\Listeners;

use App\Events\Test;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Queue\InteractsWithQueue;

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

  public function handle(Test $event)
 {  
     echo '監聽成功！監聽值：'.$event->id;
 }
}

在控制器中觸發事件

public function test1()
{
 event(new Test('11111111'));
 return '測試事件系統';
}

常用命令

php artisan event:generate
php artisan make:event UserRegisteredEvent
php artisan make:listener SendMailListener --event="UserRegisteredEvent"
本作品採用《CC 協議》，轉載必須註明作者和本文連結

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