Laravel 模型事件 - 我对它们的去向有点困惑

Recently I came to same problem in one of my Laravel 5 project, where I had to log all Model Events. I decided to use Traits. I created ModelEventLogger Trait and simply used in all Model class which needed to be logged. I am going to change it as per your need Which is given below.

<?php

namespace AppTraits;

use IlluminateDatabaseEloquentModel;
use IlluminateSupportFacadesEvent;

/**
 * Class ModelEventThrower 
 * @package AppTraits
 *
 *  Automatically throw Add, Update, Delete events of Model.
 */
trait ModelEventThrower {

    /**
     * Automatically boot with Model, and register Events handler.
     */
    protected static function bootModelEventThrower()
    {
        foreach (static::getModelEvents() as $eventName) {
            static::$eventName(function (Model $model) use ($eventName) {
                try {
                    $reflect = new ReflectionClass($model);
                    Event::fire(strtolower($reflect->getShortName()).'.'.$eventName, $model);
                } catch (Exception $e) {
                    return true;
                }
            });
        }
    }

    /**
     * Set the default events to be recorded if the $recordEvents
     * property does not exist on the model.
     *
     * @return array
     */
    protected static function getModelEvents()
    {
        if (isset(static::$recordEvents)) {
            return static::$recordEvents;
        }

        return [
            'created',
            'updated',
            'deleted',
        ];
    }
} 

现在您可以在要为其抛出事件的任何模型中使用此特征.在您的情况下 Article 模型.

<?php namespace App;

use AppTraitsModelEventThrower;
use IlluminateDatabaseEloquentModel;

class Article extends Model {

    use ModelEventThrower;

    //Just in case you want specific events to be fired for Article model
    //uncomment following line of code

   // protected static $recordEvents = ['created'];

}

 public function boot(DispatcherContract $events)
 {
     parent::boot($events);
     $events->subscribe('AppHandlersEventsArticleEventHandler');
 }

<?php namespace AppHandlersEvents;

use AppArticle;

class ArticleEventHandler{

    /**
     * Create the event handler.
     *
     * @return AppHandlersEventsArticleEventHandler
     */
    public function __construct()
    {
        //
    }

    /**
    * Handle article.created event
    */

   public function created(Article $article)
   {
      //Implement logic
   }

   /**
   * Handle article.updated event
   */

   public function updated(Article $article)
   {
      //Implement logic
   }

  /**
  * Handle article.deleted event
  */

  public function deleted(Article $article)
  {
     //Implement logic
  }

 /**
 * @param $events
 */
 public function subscribe($events)
 {
     $events->listen('article.created',
            'AppHandlersEventsArticleEventHandler@created');
     $events->listen('article.updated',
            'AppHandlersEventsArticleEventHandler@updated');
     $events->listen('article.deleted',
            'AppHandlersEventsArticleEventHandler@deleted');
 }

}