public function actionIndex()
 {
     $this->dbSize();
     $this->userfilesSize();
     $db_models = DbStats::model()->findAll(array('order' => 'date'));
     $db = array();
     foreach ($db_models as $model) {
         $db[] = array($this->viewDate($model->date), floatval($model->size));
     }
     $userfiles_models = UserfilesStats::model()->findAll(array('order' => 'date'));
     $userfiles = array();
     foreach ($userfiles_models as $model) {
         $userfiles[] = array($this->viewDate($model->date), floatval($model->size));
     }
     $this->render('index', array('db' => $db, 'userfiles' => $userfiles));
 }