article.php

国外免费开源的内容管理系统

<?php
/**
 * @version		$Id: article.php 10119 2008-03-08 11:27:22Z eddieajau $
 * @package		Joomla
 * @subpackage	Content
 * @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');

/**
 * Content Component Article Model
 *
 * @author	Louis Landry <[e-mail]>
 * @package		Joomla
 * @subpackage	Content
 * @since 1.5
 */
class ContentModelArticle extends JModel
{
	/**
	 * Article data
	 *
	 * @var object
	 */
	var $_article = null;

	/**
	 * Constructor
	 *
	 * @since 1.5
	 */
	function __construct()
	{
		parent::__construct();

		$id = JRequest::getVar('id', 0, '', 'int');
		$this->setId((int)$id);
	}

	/**
	 * Method to set the article id
	 *
	 * @access	public
	 * @param	int	Article ID number
	 */
	function setId($id)
	{
		// Set new article ID and wipe data
		$this->_id		= $id;
		$this->_article	= null;
	}

	/**
	 * Overridden set method to pass properties on to the article
	 *
	 * @access	public
	 * @param	string	$property	The name of the property
	 * @param	mixed	$value		The value of the property to set
	 * @return	boolean	True on success
	 * @since	1.5
	 */
	function set( $property, $value=null )
	{
		if ($this->_loadArticle()) {
			$this->_article->$property = $value;
			return true;
		} else {
			return false;
		}
	}

	/**
	 * Overridden get method to get properties from the article
	 *
	 * @access	public
	 * @param	string	$property	The name of the property
	 * @param	mixed	$value		The value of the property to set
	 * @return 	mixed 				The value of the property
	 * @since	1.5
	 */
	function get($property, $default=null)
	{
		if ($this->_loadArticle()) {
			if(isset($this->_article->$property)) {
				return $this->_article->$property;
			}
		}
		return $default;
	}

	/**
	 * Method to get content article data for the frontpage
	 *
	 * @since 1.5
	 */
	function &getArticle()
	{
		// Load the Category data
		if ($this->_loadArticle())
		{
			$user	= & JFactory::getUser();

			// Is the category published?
			if (!$this->_article->cat_pub && $this->_article->catid) {
				JError::raiseError( 404, JText::_("Article category not published") );
			}

			// Is the section published?
			if ($this->_article->sectionid)
			{
				if ($this->_article->sec_pub === null)
				{
					// probably a new item
					// check the sectionid probably passed in the request
					$db =& $this->getDBO();
					$query = 'SELECT published' .
							' FROM #__sections' .
							' WHERE id = ' . (int) $this->_article->sectionid;
					$db->setQuery( $query );
					$this->_article->sec_pub = $db->loadResult();
				}
				if (!$this->_article->sec_pub)
				{
					JError::raiseError( 404, JText::_("Article section not published") );
				}
			}

			// Do we have access to the category?
			if (($this->_article->cat_access > $user->get('aid', 0)) && $this->_article->catid) {
				JError::raiseError( 403, JText::_("ALERTNOTAUTH") );
			}

			// Do we have access to the section?
			if (($this->_article->sec_access > $user->get('aid', 0)) && $this->_article->sectionid) {
				JError::raiseError( 403, JText::_("ALERTNOTAUTH") );
			}

			$this->_loadArticleParams();

			/*
			 * Record the hit on the article if necessary
			 */
			$limitstart	= JRequest::getVar('limitstart',	0, '', 'int');
			if (!$this->_article->parameters->get('intro_only') && ($limitstart == 0))
			{
				$this->hit();
			}

		}
		else
		{
			$user =& JFactory::getUser();
			$article =& JTable::getInstance('content');
			$article->state			= 1;
			$article->cat_pub		= null;
			$article->sec_pub		= null;
			$article->cat_access	= null;
			$article->sec_access	= null;
			$article->author		= null;
			$article->created_by	= $user->get('id');
			$article->parameters	= new JParameter( '' );
			$article->text			= '';
			$this->_article			= $article;
		}

		return $this->_article;
	}

	/**
	 * Method to increment the hit counter for the article
	 *
	 * @access	public
	 * @return	boolean	True on success
	 * @since	1.5
	 */
	function hit()
	{
		global $mainframe;

		if ($this->_id)
		{
			$article = & JTable::getInstance('content');
			$article->hit($this->_id);
			return true;
		}
		return false;
	}

	/**
	 * Tests if article is checked out
	 *
	 * @access	public
	 * @param	int	A user id
	 * @return	boolean	True if checked out
	 * @since	1.5
	 */
	function isCheckedOut( $uid=0 )
	{
		if ($this->_loadArticle())
		{
			if ($uid) {
				return ($this->_article->checked_out && $this->_article->checked_out != $uid);
			} else {
				return $this->_article->checked_out;
			}
		} elseif ($this->_id < 1) {
			return false;
		} else {
			JError::raiseWarning( 0, 'Unable to Load Data');
			return false;
		}
	}

	/**
	 * Method to checkin/unlock the article
	 *
	 * @access	public
	 * @return	boolean	True on success
	 * @since	1.5
	 */
	function checkin()
	{
		if ($this->_id)
		{
			$article = & JTable::getInstance('content');
			return $article->checkin($this->_id);
		}
		return false;
	}

	/**
	 * Method to checkout/lock the article
	 *
	 * @access	public
	 * @param	int	$uid	User ID of the user checking the article out
	 * @return	boolean	True on success
	 * @since	1.5
	 */
	function checkout($uid = null)
	{
		if ($this->_id)
		{
			// Make sure we have a user id to checkout the article with
			if (is_null($uid)) {
				$user	=& JFactory::getUser();
				$uid	= $user->get('id');
			}
			// Lets get to it and checkout the thing...
			$article = & JTable::getInstance('content');
			return $article->checkout($uid, $this->_id);
		}
		return false;
	}

	/**
	 * Method to store the article
	 *
	 * @access	public
	 * @return	boolean	True on success
	 * @since	1.5
	 */
	function store($data)
	{
		global $mainframe;

		$article  =& JTable::getInstance('content');
		$user     =& JFactory::getUser();

		// Bind the form fields to the web link table
		if (!$article->bind($data, "published")) {
			$this->setError($this->_db->getErrorMsg());
			return false;
		}

		// sanitise id field
		$article->id = (int) $article->id;

		$isNew = ($article->id < 1);
		if ($isNew)
		{
			$article->created 		= gmdate('Y-m-d H:i:s');
			$article->created_by 	= $user->get('id');
		}
		else
		{
			$article->modified 		= gmdate('Y-m-d H:i:s');
			$article->modified_by 	= $user->get('id');
		}

		// Append time if not added to publish date
		if (strlen(trim($article->publish_up)) <= 10) {
			$article->publish_up .= ' 00:00:00';
		}