解析Laravel事件系统的运行原理
时间:2021-12-29 14:46
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在 EventServiceProvider 里注册(app/Providers/EventServiceProvider.php)
protected $listen = [ Registered::class => [ SendEmailVerificationNotification::class, ], 'App\Events\Test' => [ 'App\Listeners\EventListener', ], ];
使用命令行来生成事件与监听器
$ php artisan event:generate
此时将生成两个文件
1、App/Events/Test.php(事件)
编辑事件
<?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($id) { echo '触发事件成功!---------'.$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(监听器)
编辑监听器
<?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 $event) { echo '监听成功!监听值:'.$event->id; }}
在控制器中触发事件
public function test1(){ event(new Test('11111111')); return '测试事件系统';}
常用命令
php artisan event:generate php artisan make:event UserRegisteredEvent php artisan make:listener SendMailListener --event="UserRegisteredEvent"
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