Minor【 PHP框架】5.事件，minorphp框架事件

Minor【 PHP框架】5.事件，minorphp框架事件

5.1 事件Event

　　Minor的 Event 类提供一个简单的观察者实现，允许您在应用程序里订阅与监听事件。

　　5.1.1 订阅事件

　　首先创建一个事件类：

<?<span>php

namespace App\Event;

</span><span>use</span><span> Minor\Event\Event;

</span><span>class</span> DemoEvent <span>extends</span><span> Event
{
    </span><span>private</span> <span>$name</span><span>;

    </span><span>public</span> <span>function</span> __construct(<span>$name</span><span>)
    {
        </span><span>$this</span>->name = <span>$name</span><span>;
    }

    </span><span>public</span> <span>function</span> setName(<span>$name</span><span>)
    {
        </span><span>$this</span>->name = <span>$name</span><span>;
    }

    </span><span>public</span> <span>function</span><span> getName()
    {
        </span><span>return</span> <span>$this</span>-><span>name;
    }
}</span>

　　然后在配置文件中注册这个事件：

<?<span>php
</span><span>return</span> <span>$events</span> =<span> [
    </span>'App\Event\DemoEvent'    =><span>    [
        </span>'App\Listener\DemoListener' => 'handle',<span>
    ]</span>,<span>
];</span>

　　5.1.2 触发事件

　　Minor提供了一个事件管理类:Minor\Event\EventManger,通过调用该类的静态方法fire：EventManager::fire($event)就可以触发这个事件,例：

<span>class</span> FooController <span>extends</span><span> Controller
{
    </span><span>public</span> <span>function</span> bar(<span>$productName</span><span>)
    {
        </span><span>$event</span> = <span>new</span> DemoEvent('DemoEvent'<span>);
        EventManager</span>::fire(<span>$event</span><span>);
        </span>...<span>
    }
}</span>

5.2 监听器

　　当触发事件后事件管理器EventManager就会通过配置文件去触发监听器的制定方法。在5.1.1配置文件中我们配置了DemoEvent的监听器为App\Listener\DemoListener的handle方法，可以看一下这个类的实现：

<?<span>php

namespace App\Listener;

</span><span>use</span><span> App\Event\DemoEvent;
</span><span>use</span><span> Minor\Event\Listener;

</span><span>class</span> DemoListener <span>extends</span><span> Listener
{
    </span><span>public</span> <span>function</span> handle(DemoEvent <span>$event</span><span>)
    {
        </span><span>echo</span> '[DemoListener] handle the event:[' . <span>$event</span>->getName() .'] success!<br/><br/>'<span>;
    }
}</span>