无法获取DISTINCT列值：

Question

I am working in Yii and, I have a table named : visits

It has two foreign keys : from_user_id and to_user_id which are linked to the 'user' table. Now the table visits has many same 'from_user_id' and I want to get retrieve them in Yii as DISCTINCT.

This is my code :

$visited = Visit::model()->findAllByAttributes(array('to_user_id'=>Yii::app()->user->id));

$criteria = new CDbCriteria();
$criteria->distinct = true;

foreach($visited as $visits){

    echo User::model()->findByPk($visits->from_user_id,$criteria)->getFullName($visits->from_user_id);

   echo " <br>";
}

However, I am not able to get them as distinct.

This is my output :

san
san
san
Leo
Leo

I want the output as :

San
Leo

This is not getting me distinct values. Where am I going wrong??

Answer 1

I wasn't be able to test it, but apart from possible minor syntax adjustment, this should help you:

$visited = Visit::model()->findAllByAttributes(
    array('to_user_id'=>Yii::app()->user->id),
    array('distinct' => True)
);

According to the doc, findAllByAttribute accept a condition or criteria parameter as second argument.

If this is an array (according the doc for find() ), it will serve to initialize the various criteria properties of the requests.