laravel event

1. EventServiceProvider

   namespace App\Providers;
   
   class EventServiceProvider extends ServiceProvider
   {
   
       protected $listen = [
           'App\Events\UserHasRegistered' => [   //修改event
               'App\Listeners\Email@welcome',   //修改listener,Email是类名，welcome是函数名
           ],
       ];

2. 创建event和listener
   

   E:\wamp\www\laravel>php artisan  event:generate

   

3. 路由

   Route::get('broadcast', function () {
       event(new App\Events\UserHasRegistered('Jeffrey Way'));
       return 'done';
   });

4. 在event中接受name参数

   namespace App\Events;
   
   class UserHasRegistered extends Event
   {
       use SerializesModels;
   
       public $name;
   
       public function __construct($name)
       {
           $this->name = $name;
       }

5. 在listener中处理

   namespace App\Listeners;
   
   class Email
   {
        public function __construct()
       {
           //
       }
   
       public function handle(UserHasRegistered $event)
       {
           var_dump('The user '.$event->name . ' has registered. Fire off an email.'); //可以调用到name参数
       }

6. 在页面进行测试，主动调用
7.   
8. 更进一步，把消息推送到其他页面。
9. app\config\broadcasting 配置，默认为pusher，在.env设置账户，需要先去https://pusher.com/注册。得到key与secret
10. 
11. 安装pusher

    E:\wamp\www\laravel>composer require pusher/pusher-php-server ~2.0

     

12. 将event接入ShouldBroadcast接口，会去调用pusher
    

    namespace App\Events;
    
    use Illuminate\Contracts\Broadcasting\ShouldBroadcast;
    
    class UserHasRegistered extends Event implements ShouldBroadcast
    {
        use SerializesModels;
    
        public $name;

     

13. 在做个前台接受pusher的界面出来，首先选个路由，然后在view的blade最后加入js代码
    

    Route::get('/', function () {
        return view('welcome');   //以welcome接受
    });

        </body>
        <script src="https://js.pusher.com/2.2/pusher.min.js"></script>
        <script>
            var pusher = new Pusher('9cb1b968c4aeeefb7f81', {
              encrypted: true
            });
    
            var channel = pusher.subscribe('myChannel');    //对应到event的broadcastOn的返回值
    
            channel.bind('App\\Events\\UserHasRegistered', function(data) {     //绑定
                console.log(data);
            });
      </script>
    </html>

     

14. 打开/页面，刷新broadcast页面后，/页面能够收到信息
15. 
16. 来点动态的参数，修改rout

    Route::get('broadcast', function () {
       $name = Request::input('name');
        event(new App\Events\UserHasRegistered($name));
        return 'done';
    });

    访问broadcast?name=somename，然后就可以看见/页面在不刷新的情况下得到信息了