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PHP的Yii框架中移除组件所绑定的行为的方法,yii框架
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PHP的Yii框架中移除组件所绑定的行为的方法,yii框架

Jun 13, 2016 am 08:43 AM
php yii

PHP的Yii框架中移除组件所绑定的行为的方法,yii框架

要移除行为,可以调用 yii\base\Component::detachBehavior() 方法用行为相关联的名字实现:

$component->detachBehavior('myBehavior1');
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也可以移除全部行为:

$component->detachBehaviors();

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这上面两种方法,都会调用到 yii\base\Behavior::detach() ,其代码如下:

public function detach()
{
  // 这得是个名花有主的行为才有解除一说
  if ($this->owner) {

    // 遍历行为定义的事件,一一解除
    foreach ($this->events() as $event => $handler) {
      $this->owner->off($event, is_string($handler) ? [$this,
        $handler] : $handler);
    }
    $this->owner = null;
  }
}

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与 yii\base\Behavior::attach() 相反,解除的过程就是干两件事: 一是将 $owner 设置为 null ,表示这个行为没有依附到任何类上。 二是通过Component的 off() 将绑定到类上的事件hanlder解除下来。一句话,善始善终。

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