public function actionClear()
    {
        if ($this->module->podiumCache->flush()) {
            $this->success(Yii::t('podium/flash', 'Cache has been cleared.'));
        } else {
            $this->error(Yii::t('podium/flash', 'Sorry! There was some error while clearing the cache.'));
        }
        return $this->redirect(['admin/settings']);
    }