Frontend\Modules\Search\Ajax\Save::execute PHP Method

    public function execute()
    {
        parent::execute();
        // get parameters
        $charset = $this->getContainer()->getParameter('kernel.charset');
        $searchTerm = \SpoonFilter::getPostValue('term', null, '');
        $term = $charset == 'utf-8' ? \SpoonFilter::htmlspecialchars($searchTerm) : \SpoonFilter::htmlentities($searchTerm);
        // validate search term
        if ($term == '') {
            $this->output(self::BAD_REQUEST, null, 'term-parameter is missing.');
        } else {
            // previous search result
            $previousTerm = \SpoonSession::exists('searchTerm') ? \SpoonSession::get('searchTerm') : '';
            \SpoonSession::set('searchTerm', '');
            // save this term?
            if ($previousTerm != $term) {
                // format data
                $this->statistics = array();
                $this->statistics['term'] = $term;
                $this->statistics['language'] = LANGUAGE;
                $this->statistics['time'] = FrontendModel::getUTCDate();
                $this->statistics['data'] = serialize(array('server' => $_SERVER));
                $this->statistics['num_results'] = FrontendSearchModel::getTotal($term);
                // save data
                FrontendSearchModel::save($this->statistics);
            }
            // save current search term in cookie
            \SpoonSession::set('searchTerm', $term);
            // output
            $this->output(self::OK);
        }
    }