/**
  * Manages all models.
  */
 public function actionAdmin()
 {
     $model = new PriceTier('search');
     $model->unsetAttributes();
     // clear any default values
     if (isset($_GET['PriceTier'])) {
         $model->attributes = $_GET['PriceTier'];
     }
     if (isset($_GET['pageSize'])) {
         Yii::app()->user->setState('pageSizePriceTier', (int) $_GET['pageSize']);
         unset($_GET['pageSize']);
     }
     if (isset($_GET['archived'])) {
         Yii::app()->user->setState('archivedPriceTier', $_GET['archived']);
         unset($_GET['archived']);
     }
     $model->archived = Yii::app()->user->getState('archivedPriceTier', Yii::app()->params['defaultArchived']);
     $this->render('admin', array('model' => $model));
 }