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Minor【 PHP框架】5.事件

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Release: 2016-06-20 08:42:12
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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 style="color: #000000;">php

namespace App\Event;

</span><span style="color: #0000ff;">use</span><span style="color: #000000;"> Minor\Event\Event;

</span><span style="color: #0000ff;">class</span> DemoEvent <span style="color: #0000ff;">extends</span><span style="color: #000000;"> Event
{
    </span><span style="color: #0000ff;">private</span> <span style="color: #800080;">$name</span><span style="color: #000000;">;

    </span><span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span> __construct(<span style="color: #800080;">$name</span><span style="color: #000000;">)
    {
        </span><span style="color: #800080;">$this</span>->name = <span style="color: #800080;">$name</span><span style="color: #000000;">;
    }

    </span><span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span> setName(<span style="color: #800080;">$name</span><span style="color: #000000;">)
    {
        </span><span style="color: #800080;">$this</span>->name = <span style="color: #800080;">$name</span><span style="color: #000000;">;
    }

    </span><span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span><span style="color: #000000;"> getName()
    {
        </span><span style="color: #0000ff;">return</span> <span style="color: #800080;">$this</span>-><span style="color: #000000;">name;
    }
}</span>
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  然后在配置文件中注册这个事件:

<span style="color: #000000;">php
</span><span style="color: #0000ff;">return</span> <span style="color: #800080;">$events</span> =<span style="color: #000000;"> [
    </span>'App\Event\DemoEvent'    =><span style="color: #000000;">    [
        </span>'App\Listener\DemoListener' => 'handle',<span style="color: #000000;">
    ]</span>,<span style="color: #000000;">
];</span>
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  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 style="color: #0000ff;">class</span> FooController <span style="color: #0000ff;">extends</span><span style="color: #000000;"> Controller
{
    </span><span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span> bar(<span style="color: #800080;">$productName</span><span style="color: #000000;">)
    {
        </span><span style="color: #800080;">$event</span> = <span style="color: #0000ff;">new</span> DemoEvent('DemoEvent'<span style="color: #000000;">);
        EventManager</span>::fire(<span style="color: #800080;">$event</span><span style="color: #000000;">);
        </span>...<span style="color: #000000;">
    }
}</span>
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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 style="color: #000000;">php

namespace App\Listener;

</span><span style="color: #0000ff;">use</span><span style="color: #000000;"> App\Event\DemoEvent;
</span><span style="color: #0000ff;">use</span><span style="color: #000000;"> Minor\Event\Listener;

</span><span style="color: #0000ff;">class</span> DemoListener <span style="color: #0000ff;">extends</span><span style="color: #000000;"> Listener
{
    </span><span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span> handle(DemoEvent <span style="color: #800080;">$event</span><span style="color: #000000;">)
    {
        </span><span style="color: #0000ff;">echo</span> '[DemoListener] handle the event:[' . <span style="color: #800080;">$event</span>->getName() .'] success!<br><br>'<span style="color: #000000;">;
    }
}</span>
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