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Question

我有POST表格 id，title，content，tags，status，create_time，update_time，author_id，image

我在Post模型中创建了模块和模型关系：

 return array(
        'author' => array(self::BELONGS_TO, 'User', 'author_id'),
        'comments' => array(self::HAS_MANY, 'Comment', 'post_id', 'condition'=>'comments.status='.Comment::STATUS_APPROVED, 'order'=>'comments.create_time DESC'),
        'commentCount' => array(self::STAT, 'Comment', 'post_id', 'condition'=>'status='.Comment::STATUS_APPROVED),
    );

控制器操作：

public function actionHome()
{        
    $criteria=new CDbCriteria(array(
        'condition'=>'status='.Post::STATUS_PUBLISHED,
        'order'=>'update_time DESC',
        'with'=>'commentCount',
    ));                        
    $criteria->addSearchCondition('tags','home');  // $_GET['tag']);

    $dataProvider=new CActiveDataProvider('Post', array(
        'pagination'=>array(   
            'pageSize'=>Yii::app()->params['postsPerPage'],
        ),
        'criteria'=>$criteria,
    ));

    $this->render('home',array(
        'dataProvider'=>$dataProvider
    ));
}

主页视图：

<?php foreach($dataProvider as $post) { ?>     

        <div class="blog_wrap">
        <h2> <?php echo CHtml::link(CHtml::encode($post->title), $post->url); ?></h2>

        <?php if($post->image != '') { ?>
        <div class="img-box"><img src="<?php echo Yii::app()->request->baseUrl.'/images/post/'.$post->image; ?>"> </div>
        <?php } ?>
        <p><?php echo $post->content; ?></p>

        <a href="more.php">Read More [+]</a> 
        </div>
   <?php } ?>

错误：

Trying to get property of non-object 

在

 <?php echo CHtml::link(CHtml::encode($data->title), $data->url); ?>

如何使用yii Active记录查询关系表。我在控制器的家庭行动中没有工作。