search.php

Joomla!是一套获得过多个奖项的内容管理系统(Content Management System, CMS)。Joomla!采用PHP+MySQL数据库开发

<?php
/**
 * @version		$Id: search.php 10381 2008-06-01 03:35:53Z pasamio $
 * @package		Joomla
 * @subpackage	Search
 * @copyright	Copyright (C) 2005 - 2008 Open Source Matters. All rights reserved.
 * @license		GNU/GPL, see LICENSE.php
 * Joomla! is free software. This version may have been modified pursuant to the
 * GNU General Public License, and as distributed it includes or is derivative
 * of works licensed under the GNU General Public License or other free or open
 * source software licenses. See COPYRIGHT.php for copyright notices and
 * details.
 */

// Check to ensure this file is included in Joomla!
defined('_JEXEC') or die( 'Restricted access' );

jimport( 'joomla.application.component.model' );

/**
 * @package		Joomla
 * @subpackage	Search
 */
class SearchModelSearch extends JModel
{

	var $lists = '';

	/**
	 * Overridden constructor
	 * @access	protected
	 */
	function __construct()
	{
		parent::__construct();
	}

	function reset()
	{
		$db =& JFactory::getDBO();
		$db->setQuery( 'DELETE FROM #__core_log_searches' );
		$db->query();
	}

	function getItems( )
	{
		global $mainframe, $option;
		$db	=& JFactory::getDBO();

		$filter_order		= $mainframe->getUserStateFromRequest( 'com_search.filter_order',		'filter_order',		'hits', 'cmd' );
		$filter_order_Dir	= $mainframe->getUserStateFromRequest( 'com_search.filter_order_Dir',	'filter_order_Dir',	'',		'word' );
		$limit				= $mainframe->getUserStateFromRequest( 'global.list.limit',				'limit',			$mainframe->getCfg('list_limit'), 'int' );
		$limitstart			= $mainframe->getUserStateFromRequest( 'com_search.limitstart',			'limitstart',		0,		'int' );
		$search				= $mainframe->getUserStateFromRequest( 'com_search.search',				'search',			'',		'string' );
		$search				= JString::strtolower( $search );
		$showResults		= JRequest::getInt('search_results');

		// table ordering
		if ( $filter_order_Dir == 'ASC' ) {
			$this->lists['order_Dir'] = 'ASC';
		} else {
			$this->lists['order_Dir'] = 'DESC';
		}
		$this->lists['order'] = $filter_order;

		// search filter
		$this->lists['search']= $search;

		$where = array();
		if ($search) {
			$where[] = 'LOWER( search_term ) LIKE '.$db->Quote( '%'.$db->getEscaped( $search, true ).'%', false );
		}

		$where 		= ( count( $where ) ? ' WHERE ' . implode( ' AND ', $where ) : '' );
		$orderby 	= ' ORDER BY '. $filter_order .' '. $filter_order_Dir .', hits DESC';

		// get the total number of records
		$query = 'SELECT COUNT(*)'
		. ' FROM #__core_log_searches'
		. $where;
		$db->setQuery( $query );
		$total = $db->loadResult();

		jimport( 'joomla.html.pagination' );
		$pageNav = new JPagination( $total, $limitstart, $limit );

		$query = ' SELECT * '
		. ' FROM #__core_log_searches '
		. $where
		. $orderby;
		$db->setQuery( $query, $pageNav->limitstart, $pageNav->limit );

		$rows = $db->loadObjectList();

		JPluginHelper::importPlugin( 'search' );

		if (!class_exists( 'JSite' ))
		{
			// This fools the routers in the search plugins into thinking it's in the frontend
			require_once( JPATH_COMPONENT.DS.'helpers'.DS.'site.php' );
		}

		for ($i=0, $n = count($rows); $i < $n; $i++) {
			// determine if number of results for search item should be calculated
			// by default it is `off` as it is highly query intensive
			if ( $showResults ) {
				$results = $mainframe->triggerEvent( 'onSearch', array( $rows[$i]->search_term ) );

				$count = 0;
				for ($j = 0, $n2 = count( $results ); $j < $n2; $j++) {
					$count += count( $results[$j] );
				}

				$rows[$i]->returns = $count;
			} else {
				$rows[$i]->returns = null;
			}
		}

		return $rows;
	}
}