protected function addConfig()
    {
        try {
            $this->db->createCommand()->batchInsert(
                    PodiumConfig::tableName(),
                    ['name', 'value'],
                    [
                        ['activation_token_expire', PodiumConfig::SECONDS_ACTIVATION_TOKEN_EXPIRE],
                        ['allow_polls', PodiumConfig::FLAG_ALLOW_POLLS],
                        ['email_token_expire', PodiumConfig::SECONDS_EMAIL_TOKEN_EXPIRE],
                        ['from_email', PodiumConfig::DEFAULT_FROM_EMAIL],
                        ['from_name', PodiumConfig::DEFAULT_FROM_NAME],
                        ['hot_minimum', PodiumConfig::HOT_MINIMUM],
                        ['maintenance_mode', PodiumConfig::MAINTENANCE_MODE],
                        ['max_attempts', PodiumConfig::MAX_SEND_ATTEMPTS],
                        ['members_visible', PodiumConfig::FLAG_MEMBERS_VISIBLE],
                        ['merge_posts', PodiumConfig::FLAG_MERGE_POSTS],
                        ['meta_description', PodiumConfig::META_DESCRIPTION],
                        ['meta_keywords', PodiumConfig::META_KEYWORDS],
                        ['name', PodiumConfig::PODIUM_NAME],
                        ['password_reset_token_expire', PodiumConfig::SECONDS_PASSWORD_RESET_TOKEN_EXPIRE],
                        ['recaptcha_secretkey', ''],
                        ['recaptcha_sitekey', ''],
                        ['registration_off', PodiumConfig::REGISTRATION_OFF],
                        ['use_captcha', PodiumConfig::FLAG_USE_CAPTCHA],
                        ['use_wysiwyg', PodiumConfig::FLAG_USE_WYSIWYG],
                        ['version', Podium::getInstance()->version],
                    ]
                )->execute();
            return $this->returnSuccess(Yii::t('podium/flash', 'Default Config settings have been added.'));
        } catch (Exception $e) {
            return $this->returnError($e->getMessage(), __METHOD__,
                Yii::t('podium/flash', 'Error during settings adding')
            );
        }
    }