1、注册事件以及监听器
首先我们需要在 app/Providers/目录下的EventServiceProvider.php中注册事件监听器映射关系，如下：
/**
* The event listener mappings for the application.
*
* @var array
*/
protected $listen = [
Registered::class => [
SendEmailVerificationNotification::class,
],
//上面是框架自带
'AppEventsBlogView' => [
'AppListenersBlogViewListener',
],
];
然后项目根目录下执行如下命令 php artisan event:generate 该命令完成后，会分别自动在 app/Events和app/Listensers目录下生成 BlogView.php和BlogViewListener.php文件。
2、定义事件
在 app/Events/目录下的BlogView.php中定义事件，在__construct()的参数填写我们需要操作的类。如下：
<?php
namespace AppEvents;
use IlluminateBroadcastingChannel;
use IlluminateQueueSerializesModels;
use IlluminateBroadcastingPrivateChannel;
use IlluminateBroadcastingPresenceChannel;
use IlluminateFoundationEventsDispatchable;
use IlluminateBroadcastingInteractsWithSockets;
use IlluminateContractsBroadcastingShouldBroadcast;
use AppModelAdminArticleModel;
class BlogView
{
use Dispatchable, InteractsWithSockets, SerializesModels;
/**
* Create a new event instance.
*
* @return void
*/
public function __construct(ArticleModel $article)
{
$this->article = $article;
}
/**
* Get the channels the event should broadcast on.
*
* @return IlluminateBroadcastingChannel|array
*/
public function broadcastOn()
{
return new PrivateChannel('channel-name');
}
}
3、定义监听
在 app/Listeners/目录下的BlogViewListener.php中，在handle()的处理业务逻辑。如下：
<?php
namespace AppListeners;
use AppEventsBlogView;
use IlluminateQueueInteractsWithQueue;
use IlluminateContractsQueueShouldQueue;
class BlogViewListener
{
/**
* Create the event listener.
*
* @return void
*/
public function __construct()
{
//
}
/**
* Handle the event.
*
* @param BlogView $event
* @return void
*/
public function handle(BlogView $event)
{
$event->article->where('art_id', '=', $event->article->art_id)->increment('clicks'); //点击自增//保存数据库
}
}
4、触发事件
<?php
namespace AppHttpControllersHome;
use AppEventsBlogView;
use IlluminateSupportFacadesEvent;
use AppModelAdminArticleModel;
use AppModelAdminCategoryModel;
use IlluminateHttpRequest;
class IndexController extends CommonController
{
public function article(Request $request, $id){
$articleModel = new ArticleModel();
// $articleModel->where('art_id', '=', $id)->increment('clicks'); //点击自增
$data = $articleModel->findOrFail($id);
$categoryModel = new CategoryModel();
$cate = $categoryModel->parentTree($data->cate_id); //获取上级分类
$pre = $articleModel->where([['cate_id','=',$data->cate_id],['art_id','<',$id]])->first(); //获取上一篇文章
$next = $articleModel->where([['cate_id','=',$data->cate_id],['art_id','>',$id]])->first();
$relation = $articleModel->where('cate_id', '=', $data->cate_id)->get(); //获取相关文章
Event::dispatch(new BlogView($data)); //通过查看源码，Event::fire 更改为Event::dispatch
// event(new BlogView($data));
return View('home.new',compact('data','cate','pre', 'next', 'relation'));
}
}
其他关于事件的操作，如队列。
链接：https://laravelacademy.org/post/19508.html