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/home/develito/httpdocs/components/com_dmod/models/category.php

<?php
/*------------------------------------------------------------------------
# com_dmod - Dmod Module Manager
# ------------------------------------------------------------------------
# author    Jesus Vargas Garita
# copyright Copyright (C) 2010 www.joomlahill.com. All Rights Reserved.
# @license - http://www.gnu.org/licenses/gpl-2.0.html GNU/GPL
# Websites: http://www.joomlahill.com
# Technical Support:  Forum - http://www.joomlahill.com/forum
-------------------------------------------------------------------------*/
 
defined('_JEXEC') or die;

class DmodModelCategory extends JModelList
{
	protected $_item = null;
	protected $_articles = null;
	protected $_siblings = null;
	protected $_children = null;
	protected $_parent = null;
	protected $_category = null;
	protected $_categories = null;

public function __construct($config = array())
	{
		if (empty($config['filter_fields'])) {
			$config['filter_fields'] = array(
				'id', 'a.id',
				'name', 'a.name',
				'con_position', 'a.con_position',
				'suburb', 'a.suburb',
				'state', 'a.state',
				'country', 'a.country',
				'ordering', 'a.ordering',
			);
		}

parent::__construct($config);
	}

public function &getItems()
	{
		// Invoke the parent getItems method to get the main list
		$items = parent::getItems();

// Convert the params field into an object, saving original in _params
		for ($i = 0, $n = count($items); $i < $n; $i++) {
			$item = &$items[$i];
			if (!isset($this->_params)) {
				$params = new JRegistry();
				$params->loadString($item->params);
				$item->params = $params;
			}
		}

return $items;
	}

protected function getListQuery()
	{
		$user	= JFactory::getUser();
		$groups	= implode(',', $user->getAuthorisedViewLevels());

// Create a new query object.
		$db		= $this->getDbo();
		$query	= $db->getQuery(true);

// Select required fields from the categories.
		$query->select($this->getState('list.select', 'a.*') . ','
		. ' CASE WHEN CHAR_LENGTH(a.alias) THEN CONCAT_WS(\':\', a.id, a.alias) ELSE a.id END as slug, '
		. ' CASE WHEN CHAR_LENGTH(c.alias) THEN CONCAT_WS(\':\', c.id, c.alias) ELSE c.id END AS catslug ');
		$query->from('`#__dmod` AS a');
		$query->where('a.access IN ('.$groups.')');
		
		$query->select('m.module AS module');
		$query->join('LEFT', '`#__modules` AS m ON m.id = a.module');
		
		$query->select('c.title AS cat');
		$query->join('LEFT', '#__categories AS c ON c.id = a.catid');
		
		// Filter by category.
		if ($categoryId = $this->getState('category.id')) {
			$query->where('a.catid = '.(int) $categoryId);
			$query->where('c.access IN ('.$groups.')');
		}

// Filter by state
		$state = $this->getState('filter.published');
		if (is_numeric($state)) {
			$query->where('a.published = '.(int) $state);
		}
		// Filter by start and end dates.
		$nullDate = $db->Quote($db->getNullDate());
		$nowDate = $db->Quote(JFactory::getDate()->toSql());

// Set sortname ordering if selected
		if ($this->getState('list.ordering') == 'sortname') {
			$query->order($db->escape('a.sortname1').' '.$db->escape($this->getState('list.direction', 'ASC')));
			$query->order($db->escape('a.sortname2').' '.$db->escape($this->getState('list.direction', 'ASC')));
			$query->order($db->escape('a.sortname3').' '.$db->escape($this->getState('list.direction', 'ASC')));
		} else {
			$query->order($db->escape($this->getState('list.ordering', 'a.ordering')).' '.$db->escape($this->getState('list.direction', 'ASC')));
		}

return $query;
	}

protected function populateState($ordering = null, $direction = null)
	{
		// Initialise variables.
		$app	= JFactory::getApplication();
		$params	= JComponentHelper::getParams('com_dmod');
		$db		= $this->getDbo();
		// List state information
		$format = JRequest::getWord('format');
		if ($format=='feed') {
			$limit = $app->getCfg('feed_limit');
		}
		else {
			$limit = $app->getUserStateFromRequest('global.list.limit', 'limit', $app->getCfg('list_limit'));
		}
		$this->setState('list.limit', $limit);

$limitstart = JRequest::getVar('limitstart', 0, '', 'int');
		$this->setState('list.start', $limitstart);

$orderCol	= JRequest::getCmd('filter_order', 'ordering');
		if (!in_array($orderCol, $this->filter_fields)) {
			$orderCol = 'ordering';
		}
		$this->setState('list.ordering', $orderCol);

$listOrder	=  JRequest::getCmd('filter_order_Dir', 'ASC');
		if (!in_array(strtoupper($listOrder), array('ASC', 'DESC', ''))) {
			$listOrder = 'ASC';
		}
		$this->setState('list.direction', $listOrder);

$id = JRequest::getVar('id', 0, '', 'int');
		$this->setState('category.id', $id);

$user = JFactory::getUser();
		if ((!$user->authorise('core.edit.state', 'com_contact')) &&  (!$user->authorise('core.edit', 'com_contact'))){
			// limit to published for people who can't edit or edit.state.
			$this->setState('filter.published', 1);

// Filter by start and end dates.
			$this->setState('filter.publish_date', true);
		}
		$this->setState('filter.language',$app->getLanguageFilter());

// Load the parameters.
		$this->setState('params', $params);
	}

public function getCategory()
	{
		if(!is_object($this->_item))
		{
			$app = JFactory::getApplication();
			$menu = $app->getMenu();
			$active = $menu->getActive();
			$params = new JRegistry();
			$params->loadString($active->params);
			$options = array();
			$options['countItems'] = $params->get('show_cat_items', 1) || $params->get('show_empty_categories', 0);
			$categories = JCategories::getInstance('Dmod', $options);
			$this->_item = $categories->get($this->getState('category.id', 'root'));
			if(is_object($this->_item))
			{
				$this->_children = $this->_item->getChildren();
				$this->_parent = false;
				if($this->_item->getParent())
				{
					$this->_parent = $this->_item->getParent();
				}
				$this->_rightsibling = $this->_item->getSibling();
				$this->_leftsibling = $this->_item->getSibling(false);
			} else {
				$this->_children = false;
				$this->_parent = false;
			}
		}

return $this->_item;
	}

public function getParent()
	{
		if(!is_object($this->_item))
		{
			$this->getCategory();
		}
		return $this->_parent;
	}

function &getLeftSibling()
	{
		if(!is_object($this->_item))
		{
			$this->getCategory();
		}
		return $this->_leftsibling;
	}

function &getRightSibling()
	{
		if(!is_object($this->_item))
		{
			$this->getCategory();
		}
		return $this->_rightsibling;
	}

function &getChildren()
	{
		if(!is_object($this->_item))
		{
			$this->getCategory();
		}
		return $this->_children;
	}
}