First of all, thank you for this forum and for all your “free” support. I’m a Yii newbie, so please be gentle with me! 
I’m trying to use CSort within an actionIndex that use CActiveDataProvider, the same activeIndex() of the “Blog” Demo. I’m trying to display a custom “title” sort link within the index.php, and it’s done. I succeed to make it works creating 2 new CSort objects, and I’m sure this is not the right procedure.
This is the actionIndex():
public function actionIndex()
{
$criteria=new CDbCriteria(
array(
'condition'=>'status='.Post::STATUS_PUBLISHED,
'with'=>'commentCount',
)
);
//Piece of code to create CSort instance...
if (isset($_GET['sort'])) {
$sort = new CSort('Post');
$sort->applyOrder($criteria);
}
if(isset($_GET['tag']))
$criteria->addSearchCondition('tags',$_GET['tag']);
$dataProvider= new CActiveDataProvider('Post', array(
'pagination'=>array(
'pageSize'=>Yii::app()->params['postsPerPage'],
),
'criteria'=>$criteria,
));
$this->render('index',array(
'dataProvider'=>$dataProvider,
));
}
and these are the rows within the index.php:
<?php
$order = new CSort('Post');
echo $order->link('title', 'Title');
?>
Now, is it possible to make it works better, just creating one CSort instance? I tried to pass the $sort variable to index.php but i can’t succeed.
Thank you!