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<?php
/**
* @version 1.1 $Id: helper.php 1762 2013-09-14 16:42:09Z ggppdk $
* @package Joomla
* @subpackage FLEXIcontent Tag Cloud Module
* @copyright (C) 2009 Emmanuel Danan - www.vistamedia.fr
* @license GNU/GPL v2
*
* FLEXIcontent is a derivative work of the excellent QuickFAQ component
* @copyright (C) 2008 Christoph Lukes
* see www.schlu.net for more information
*
* FLEXIcontent is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
// no direct access
defined('_JEXEC') or die('Restricted access');
class modFlexiTagCloudHelper
{
static function getTags(&$params, &$module)
{
// Initialize
$app = JFactory::getApplication();
$db = JFactory::getDbo();
$user = JFactory::getUser();
$cparams = JComponentHelper::getParams( 'com_flexicontent' );
//$now = FLEXI_J16GE ? JFactory::getDate()->toSql() : JFactory::getDate()->toMySQL();
$_nowDate = 'UTC_TIMESTAMP()'; //$db->Quote($now);
$nullDate = $db->getNullDate();
$show_noauth = $cparams->get('show_noauth', 0);
// Get parameters
$minsize = (int)$params->get('min_size', '1');
$maxsize = (int)$params->get('max_size', '10');
$limit = (int)$params->get('count', '25');
$method = (int)$params->get('method', '1'); // Category method
$method_types = (int)$params->get('method_types', '1'); // (current) Type method
$cids = $params->get('categories');
$cids = is_array($cids)
? $cids
: ((int) $cids ? array((int) $cids) : array());
$treeinclude = $params->get('treeinclude');
$tagitemid = (int)$params->get('force_itemid', 0);
$where = ' WHERE 1 '
. ' AND i.state IN ( 1, -5 )'
. ' AND ( i.publish_up IS NULL OR i.publish_up = '.$db->Quote($nullDate).' OR i.publish_up <= '.$_nowDate.' )'
. ' AND ( i.publish_down IS NULL OR i.publish_down = '.$db->Quote($nullDate).' OR i.publish_down >= '.$_nowDate.' )'
. ' AND c.published = 1'
. ' AND tag.published = 1';
// access scope
if (!$show_noauth)
{
$aid_arr = JAccess::getAuthorisedViewLevels($user->id);
$aid_list = implode(",", $aid_arr);
$where .= ' AND i.access IN ('.$aid_list.')';
}
// ***
// *** Check if loading tags according to current view
// ***
if ($method === 1 || $method_types === 1)
{
$option = $app->input->get('option', '', 'cmd');
$view = $app->input->get('view', '', 'cmd');
$id = $app->input->get('id', 0, 'int'); // id of current item
$cid = $app->input->get(($option == 'com_content' ? 'id' : 'cid'), 0, 'int'); // current category ID or category ID of current item
$rootcatid = $app->input->get('rootcatid', 0, 'int'); // root category ID for directory view
$is_content_ext = $option == 'com_flexicontent' || $option == 'com_content';
$isflexi_itemview = $is_content_ext && ($view == 'item' || $view == 'article') && $id;
$isflexi_catview = $is_content_ext && $view == 'category' && $cid;
$isflexi_dirview = $view == 'flexicontent' && $rootcatid;
}
// ***
// *** Category scope
// ***
if ($method === 1)
{
// Find current category
if ($isflexi_itemview)
{
$query = 'SELECT catid FROM #__content WHERE id = ' . $id;
$db->setQuery($query);
$cid = $db->loadResult();
$cids = $cid ? array($cid) : array(0);
}
elseif($isflexi_catview)
{
$cids = array($cid);
}
elseif($isflexi_dirview)
{
$cids = array($rootcatid);
}
else
{
$cids = array();
}
}
// Retrieve extra categories, such children or parent categories
$cids = flexicontent_cats::getExtraCats($cids, $treeinclude, array(0));
$cids = empty($cids)
? array(0)
: $cids;
// EXCLUDE method
if ($method == 2)
{
$where .= ' AND c.id NOT IN (' . implode(',', $cids) . ')';
}
// INCLUDE method (specified categories or current category)
elseif ($method == 3 || $method == 1)
{
$where .= ' AND c.id IN (' . implode(',', $cids) . ')';
}
// ***
// *** (current) content type scope
// ***
$typeid = 0;
if ($method_types === 1 && $isflexi_itemview)
{
$query = 'SELECT type_id FROM #__flexicontent_items_ext WHERE item_id = ' . $id;
$db->setQuery($query);
$typeid = $db->loadResult();
if ($typeid)
{
$where .= ' AND i.type_id = ' . $typeid;
}
}
// ***
// *** Get matching tags and their usage counts
// ***
$result = array();
$query = 'SELECT tag.id, COUNT( rel.tid ) AS no'
. ' FROM #__flexicontent_tags_item_relations AS rel'
. ' JOIN #__flexicontent_items_tmp AS i ON i.id = rel.itemid'
. ' JOIN #__categories AS c ON c.id = i.catid' // to check publication state and limit to specific cats
. ' JOIN #__flexicontent_tags as tag ON tag.id = rel.tid' // to check publication state
. $where
. ' GROUP BY rel.tid'
. ' ORDER BY no DESC'
;
$tag_counts = $db->setQuery($query, 0, $limit)->loadObjectList('id');
// Did any tags match our criteria ?
if (!$tag_counts)
{
return $tag_counts;
}
// ***
// *** Find out max & min usage count of tags
// ***
$max_no = reset($tag_counts);
$min_no = end($tag_counts);
$max = (int) $max_no->no;
$min = (int) $min_no->no;
// ***
// *** Get tag data
// ***
$query = $db->getQuery(true)
->select('tag.id AS _id, jt.id, jt.title, jt.description')
->select('CASE WHEN CHAR_LENGTH(tag.alias) THEN CONCAT_WS(\':\', tag.id, tag.alias) ELSE tag.id END as slug')
->from('#__flexicontent_tags AS tag')
->leftjoin('#__tags AS jt ON jt.id = tag.jtag_id')
->where('tag.id IN (' . implode(', ', array_keys($tag_counts)) . ')')
;
$rows = $db->setQuery($query)->loadObjectList('_id');
// Add tag counts, calculated above
foreach($rows as $row)
{
$row->id = $row->_id;
$row->no = $tag_counts[$row->id]->no;
unset($row->_id);
}
// ***
// *** Create the tag links and other tag information
// ***
$use_catlinks = $cparams->get('tags_using_catview', 0);
$i = 0;
$lists = array();
foreach ($rows as $row)
{
$lists[$i] = new stdClass();
$lists[$i]->size = modFlexiTagCloudHelper::sizer($min, $max, $row->no, $minsize, $maxsize);
$lists[$i]->name = $row->title ?: $row->name;
$lists[$i]->description = $row->description;
$lists[$i]->screenreader = JText::sprintf('FLEXI_NR_ITEMS_TAGGED', $row->no);
$lists[$i]->link = $use_catlinks
? FlexicontentHelperRoute::getCategoryRoute(0, $tagitemid, array('layout'=>'tags','tagid'=>$row->slug)) . ($typeid ? '&filter_8=' . $typeid : '')
: FlexicontentHelperRoute::getTagRoute($row->slug, $tagitemid) . '&module='.$module->id;
$lists[$i]->link = JRoute::_( $lists[$i]->link );
$i++;
}
return $lists;
}
/**
* sort the tags between a range from 1 to 10 according their usage
*/
static function sizer($min, $max, $no, $minsize, $maxsize)
{
$spread = $max - $min;
$spread = $spread === 0 ? 1 : $spread;
$step = ($maxsize - $minsize) / $spread;
$size = $minsize + (($no - $min) * $step);
$size = ceil($size);
return $size;
}
}