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<?php |
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if (!defined('BASEPATH')) { |
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exit('No direct script access allowed'); |
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} |
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/** |
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* Class Similar_Posts |
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* Search similar pages to current which is shown |
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*/ |
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class Similar_Posts |
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{ |
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/** |
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* @var array |
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*/ |
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private $defaultSettings = [ |
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'categories' => ['all'], |
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'limit' => 5, |
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'max_short_description_words' => 500, |
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]; |
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/** |
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* @var array |
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*/ |
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private $settings = []; |
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/** |
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* Page title to search similar |
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* @var string |
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*/ |
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private $pageTitle = ''; |
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/** |
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* Page id to search similar |
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* @var int |
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*/ |
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private $pageId; |
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public function __construct() { |
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} |
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/** |
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* @return array |
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*/ |
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public function getDefaultSettings() { |
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return $this->defaultSettings; |
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} |
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/** |
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* @param array $settings |
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*/ |
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private function initSettings($settings) { |
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foreach ($this->defaultSettings as $settingName => $setting) { |
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$this->settings[$settingName] = $settings[$settingName] ?: $setting; |
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} |
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} |
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/** |
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* @param string $title |
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*/ |
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private function setPageTitle($title) { |
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$title = str_replace([',', ';', ':', '-', '+', '=', '@', '.', '/', '\''], '', $title); |
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$this->pageTitle = $title; |
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} |
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/** |
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* @param int $pageId |
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*/ |
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private function setPageId($pageId) { |
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$this->pageId = $pageId; |
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} |
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/** |
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* Start find similar pages |
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* @param int $pageId |
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* @param string $title |
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* @param array $settings |
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* @return array |
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*/ |
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public function find($pageId, $title, $settings) { |
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$this->initSettings($settings); |
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$this->setPageTitle($title); |
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$this->setPageId($pageId); |
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return $this->search(); |
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} |
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/** |
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* Search pages |
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* @return array |
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*/ |
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private function search() { |
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$pages = $this->getPagesByTags(); |
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$prevTextLimit = $this->settings['max_short_description_words']; |
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if ($prevTextLimit) { |
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foreach ($pages as $key => $page) { |
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$pages[$key]['prev_text'] = mb_strlen($page['prev_text']) > $prevTextLimit ? strip_tags(mb_substr($page['prev_text'], 0, $prevTextLimit)) . '...' : $page['prev_text']; |
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} |
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} |
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return $pages; |
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} |
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/** |
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* Search pages by tags |
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* @return array |
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*/ |
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private function getPagesByTags() { |
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$query = ' |
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SELECT page.*, count(page_tags.tag_id) AS tags_count |
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FROM `content` AS page |
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JOIN content_tags AS page_tags |
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ON page_tags.page_id = page.id |
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WHERE tag_id IN (SELECT tag_id FROM content_tags WHERE page_id = ' . $this->pageId . ") AND `page`.`post_status`='publish' |
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AND page.id != " . $this->pageId |
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. ' AND page.lang = ' . CI::$APP->config->item('cur_lang'); |
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if (!in_array('all', $this->settings['categories'])) { |
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$query .= ' AND page.category IN (' . implode(',', $this->settings['categories']) . ')'; |
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} |
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$query .= ' GROUP BY page.id ORDER BY tags_count DESC'; |
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if ($this->settings['limit']) { |
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$query .= ' LIMIT ' . $this->settings['limit']; |
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} |
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$result = CI::$APP->db->query($query); |
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return $result ? $result->result_array() : []; |
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} |
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} |
imagecms /
ImageCMS
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