【php】Yii 中优雅的使用事件

• Z时代
• 2024-01-10
• 分类：技术分享

// 绑定事件
$component->on($event::EVENT_NAME, [$object, 'methodNameA']);
$component->on($event::EVENT_NAME, [$object, 'methodNameB']);
// 触发事件
$component->trigger($event::EVENT_NAME, $event); 

$ composer require guanguans/yii-event -vvv

...
'components' => [
...
'event' => [
'class' => \Guanguans\YiiEvent\Event::className(),
'listen' => [
// 事件类名
\app\events\ExampleEvent::className() => [
// 监听该事件监听的类名
\app\listeners\ExampleListener::class,
],
],
],
...
],
...

namespace app\events;
use yii\base\Event;
class ExampleEvent extends Event
{
public $name = 'example';
}

namespace app\listeners;
use Guanguans\YiiEvent\ListenerInterface;
use yii\base\Event;
class ExampleListener implements ListenerInterface
{
public static function handle(Event $event)
{
// to do something.
var_export($event->name);
}
}

Yii::$app->event->dispatch(new ExampleEvent());
// or
event(new ExampleEvent());

'example'

Yii 中使用一个事件大概是这个样子的

// 绑定事件
$component->on($event::EVENT_NAME, [$object, 'methodNameA']);
$component->on($event::EVENT_NAME, [$object, 'methodNameB']);
// 触发事件
$component->trigger($event::EVENT_NAME, $event); 

源码

• https://github.com/guanguans/yii-event

环境要求

• Yii > 2.0

安装

$ composer require guanguans/yii-event -vvv

配置

...
'components' => [
...
'event' => [
'class' => \Guanguans\YiiEvent\Event::className(),
'listen' => [
// 事件类名
\app\events\ExampleEvent::className() => [
// 监听该事件监听的类名
\app\listeners\ExampleListener::class,
],
],
],
...
],
...

使用示例

创建事件 app\events\ExampleEvent.php

namespace app\events;
use yii\base\Event;
class ExampleEvent extends Event
{
public $name = 'example';
}

创建监听 app\listeners\ExampleListener.php

namespace app\listeners;
use Guanguans\YiiEvent\ListenerInterface;
use yii\base\Event;
class ExampleListener implements ListenerInterface
{
public static function handle(Event $event)
{
// to do something.
var_export($event->name);
}
}

触发事件

Yii::$app->event->dispatch(new ExampleEvent());
// or
event(new ExampleEvent());

验证结果

'example'

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