Живой поиск Ajax

<?php
 
class actionSearchWidgetAutocomplete extends cmsAction {
 
    public function run() {
 
        if (!$this->request->isAjax() || !($term = $this->request->get('term', ''))) {
            return cmsCore::error404();
        }
 
        $default_order_by = !empty($this->options['order_by']) ? $this->options['order_by'] : 'fsort';
 
        $query = $this->request->get('term', '');
        $type = $this->request->get('type', 'words');
        $date = $this->request->get('date', 'all');
        $order_by = $this->request->get('order_by', $default_order_by);
 
        if (!in_array($order_by, ['fsort', 'date_pub'], true)) {
            return cmsCore::error404();
        }
 
        if (!in_array($type, ['words', 'exact'], true)) {
            return cmsCore::error404();
        }
 
        if (!in_array($date, ['all', 'w', 'm', 'y'], true)) {
            return cmsCore::error404();
        }
 
        $result_all = [];
 
        if ($this->request->has('term')) {
 
            if (!$query || !$this->model->setQuery($query)) {
                cmsUser::addSessionMessage(LANG_SEARCH_TOO_SHORT, 'error');
                return $this->redirectToAction('');
            }
 
            $this->model->setSearchType($type);
            $search_controllers = cmsEventsManager::hookAll('fulltext_search', $this, []);
 
            foreach ($search_controllers as $search_controller) {
                foreach ($search_controller['sources'] as $sources_name => $sources_title) {
 
                    if (!empty($this->options['types']) && !in_array($sources_name, $this->options['types'])) {
                        continue;
                    }
 
                    if (empty($search_controller['match_fields'][$sources_name])) {
                        continue;
                    }
 
                    $this->model->filterDateInterval($date);
 
                    if (!empty($search_controller['joins'][$sources_name])) {
                        $this->model->applyJoins($search_controller['joins'][$sources_name]);
                    }
 
                    if (!empty($search_controller['filters'][$sources_name])) {
                        $this->model->filterSearch($search_controller['filters'][$sources_name]);
                    }
 
                    $this->model->setMatchFields($search_controller['match_fields'][$sources_name])->filterQuery();
 
                    $results_count = $this->model->getCount($search_controller['table_names'][$sources_name], false);
 
                    if ($results_count) {
                        $this->model->selectList($search_controller['select_fields'][$sources_name]);
 
                        $result = $this->model->getSearchResults($search_controller['table_names'][$sources_name]);
 
                        foreach ($result as $key => $item) {
                            if (is_callable($search_controller['item_callback'])) {
                                $result[$key] = call_user_func_array($search_controller['item_callback'], [
                                    $item,
                                    $this->model,
                                    $sources_name,
                                    $search_controller['match_fields'][$sources_name],
                                    $search_controller['select_fields'][$sources_name]
                                ]);
 
                                if ($result[$key] === false) {
                                    unset($result[$key]);
                                }
                            }
                        }
 
                        $result_all = array_merge($result_all, $result);
                    }
 
                    $this->model->resetFilters();
                }
            }
        }
 
        $results = [];
 
        foreach ($result_all as $item) {
            $results[] = array(
                'id'    => $item['id'],
                'label' => trim(strip_tags($item['title']), "."),
                'value' => strip_tags($item['title']),
                'url'   => $item['url'],
                'image' => html_image_src($item['photo'], 'micro', true)
            );
        }
 
        // Ограничиваем до 8 результатов
        $results = array_slice($results, 0, 8);
 
        return $this->cms_template->renderJSON($results);
    }
 
}