public function getCurrentTag()
    {
        /**
         * @var Blog $dataRecord
         */
        $dataRecord = $this->dataRecord;
        $tag = $this->request->param('Tag');
        if ($tag) {
            $filter = URLSegmentFilter::create();
            // url encode unless it's multibyte (already pre-encoded in the database)
            // see https://github.com/silverstripe/silverstripe-cms/pull/2384
            if (!$filter->getAllowMultibyte()) {
                $tag = rawurlencode($tag);
            }

            return $dataRecord->Tags()
                ->filter('URLSegment', $tag)
                ->first();
        }
        return null;
    }