Question

我在actionView和actionIndex中添加了以下代码。代码工程代码在actionView中使用时工作正常，但在actionIndex上使用时会抛出Error 500，Undefined variable：id。为什么变量id仅在actionIndex上未定义？

actionView ...

public function actionView($id)  
{  

            $textDataProvider=new CActiveDataProvider('Text', array(  
        'criteria'=>array(  
            'condition'=>'articles_id=:articlesId',  
            'params'=>array(':articlesId'=>$this->loadModel($id)->id),  
        ),  
        'pagination'=>array(  
            'pageSize'=>1,  
        ),  
     ));  
    $this->render('view',array(  
        'model'=>$this->loadModel($id),  
                    'textDataProvider'=>$textDataProvider,  

    ));  
}

相同的代码，actionIndex只有很小的变化......

public function actionIndex()
{       

        //get text information
        $textDataProvider=new CActiveDataProvider('Text', array(
        'criteria'=>array(
            'condition'=>'articles_id=:articlesId',
                             'params'=>array(':articlesId'=>$this->loadModel($id)->id),
                            'offset'=>'0',
                            'limit' => '1',


        ),
        ));
        //get criteria
        $criteria = new CDbCriteria();
        //$criteria->condition = 'country = :country';
        //$criteria->params = array (':country'=> $_GET['country']);
        $criteria->order = 'create_time desc';

        //get count
        $count = Articles::model()->count($criteria);

        //pagination
        $pages = new CPagination($count);
        $pages->setPageSize(10);
        $pages->applyLimit($criteria);

        //result to show on page
        $result = Articles::model()->findAll($criteria);
        $dataProvider = new CArrayDataProvider($result);



        $this->render('index', array(
    'dataProvider' => $dataProvider,
    'pages' => $pages,
        'textDataProvider'=>$textDataProvider,
        ));


   }

我已经尝试对actionIndex进行更改以尝试获取ID，如下所述。但我仍然可以得到身份。

actionIndex ...

public function actionIndex（） {

    //get criteria
    $criteria = new CDbCriteria();
    //$criteria->condition = 'country = :country';
    //$criteria->params = array (':country'=> $_GET['country']);
    $criteria->order = 'create_time desc';

    //get count
    $count = Articles::model()->count($criteria);

    //pagination
    $pages = new CPagination($count);
    $pages->setPageSize(10);
    $pages->applyLimit($criteria);

    //result to show on page
    $result = Articles::model()->findAll($criteria);
    $dataProvider = new CArrayDataProvider($result);


    //$arr = array();
    foreach($result as $id)
    {
      $text_id = $id->id;
    }

     //get text information
    $criteria2=new CDbCriteria(array(                    
                            'order'=>'id desc',

                            'condition'=>'articles_id='.$text_id,

                    ));

    $textProvider=new CActiveDataProvider('Text', array(
        'criteria'=>$criteria2,
));  
    $this->render('index', array(
    'dataProvider' => $dataProvider,
    'pages' => $pages,
    'textProvider'=>$textProvider,
    ));
   }

Answer 1

很明显，您使用$id而没有定义它！在actionView中，您有$id作为参数，但在actionIndex中您没有它。因此'params'=>array(':articlesId'=>$this->loadModel($id)会导致未定义变量错误。要解决此问题，您必须将$id传递给actionIndex。

params in action在YII中给出错误500，未定义变量：id

1 个答案: