MANY relation handling in YII

Reference : http://hafiznor.wordpress.com/2014/05/15/yii-cgridview-show-relations-has_many-in-gridview/

Make sure you have the relations object:

public function relations()
 {
    return array(
         'example' => array(self::HAS_MANY, 'exTask', 'ex_id'),
   );
 }

Add function in your model file:

public static function extractObjData($objData) {
 $tmp = '<div class="edata">';
 foreach ($objData as $obj) {
      $tmp = $tmp . $obj->name . '<br/>'; 
 }

 $tmp = $tmp.'</div>';
 return $tmp;
}

In your GridView columns:

array(
 'header' => 'PEOPLE',
 'value' => 'HumanModel::extractObjData($data->example)',
 'type' => 'raw',
 ),