/**
  * Lists all models.
  */
 public function actionPlatAutocomplete()
 {
     $term = trim($_GET['term']);
     if ($term != '') {
         // Note: Users::usersAutoComplete is the function you created in Step 2
         $users = Characteristic::platAutoComplete($term);
         echo CJSON::encode($users);
         Yii::app()->end();
     }
 }