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How Yii filters out bad code

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Jan 02, 2018 pm 12:03 PM

codefilter

How does Yii filter bad code? This article mainly introduces the usage of Yii purifier CHtmlPurifier, which can realize the function of filtering bad code and involves related usage skills in controllers, models, filters and views. Friends in need can refer to it. I hope it will be helpful to everyone.

The details are as follows:

1. Used in the controller:

public function actionCreate()
{
  $model=new News;
  $purifier = new CHtmlPurifier();
  $purifier->options = array(
    &#39;URI.AllowedSchemes&#39;=>array(
              &#39;http&#39; => true,
              &#39;https&#39; => true,
    ),
       &#39;HTML.Allowed&#39;=>&#39;p&#39;,
  );
  if(isset($_POST[&#39;News&#39;]))
  {
    $model->attributes=$_POST[&#39;News&#39;];
    $model->attributes[&#39;content&#39;] = $purifier->purify($model->attributes[&#39;content&#39;]);
    if($model->save())
      $this->redirect(array(&#39;view&#39;,&#39;id&#39;=>$model->id));
  }
}

2. Used in the model:

protected function beforeSave()
{
  $purifier = new CHtmlPurifier();
  $purifier->options = array(
    &#39;URI.AllowedSchemes&#39;=>array(
              &#39;http&#39; => true,
              &#39;https&#39; => true,
    ),
       &#39;HTML.Allowed&#39;=>&#39;p&#39;,
  );
  if(parent::beforeSave()){
    if($this->isNewRecord){
      $this->create_data = date(&#39;y-m-d H:m:s&#39;);
      $this->content = $purifier->purify($this->content);
    }
    return true;
  }else{
    return false;
  }
}

3. Used in the filter Use in:

public function filters()
{
  return array(
    &#39;accessControl&#39;, // perform access control for CRUD operations
    &#39;postOnly + delete&#39;, // we only allow deletion via POST request
    &#39;purifier + create&#39;, //载入插入页面时进行些过滤操作
  );
}
public function filterPurifier($filterChain){
  $purifier = new CHtmlPurifier();
  $purifier->options = array(
    &#39;URI.AllowedSchemes&#39;=>array(
              &#39;http&#39; => true,
              &#39;https&#39; => true,
    ),
       &#39;HTML.Allowed&#39;=>&#39;p&#39;,
  );
  if(isset($_POST[&#39;news&#39;]){
    $_POST[&#39;news&#39;][&#39;content&#39;] = $purify($_POST[&#39;news&#39;][&#39;content&#39;]);
  }
    $filterChain->run();
}

4. Use in views:

<?php $this->beginWidget(&#39;CHtmlPurifier&#39;); ?>
...display user-entered content here...
<?php $this->endWidget(); ?>

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