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<?php
/**
* @copyright Copyright (C) 2005 - 2012 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE.txt
*/
// No direct access
defined('_JEXEC') or die;
/**
* Example Content Plugin
*
* @package Joomla.Plugin
* @subpackage Content.joomla
* @since 1.6
*/
class plgContentJoomla extends JPlugin
{
/**
* Example after save content method
* Article is passed by reference, but after the save, so no changes will be saved.
* Method is called right after the content is saved
*
* @param string The context of the content passed to the plugin (added in 1.6)
* @param object A JTableContent object
* @param bool If the content is just about to be created
* @since 1.6
*/
public function onContentAfterSave($context, &$article, $isNew)
{
// Check we are handling the frontend edit form.
if ($context != 'com_content.form') {
return true;
}
// Check if this function is enabled.
if (!$this->params->def('email_new_fe', 1)) {
return true;
}
// Check this is a new article.
if (!$isNew) {
return true;
}
$user = JFactory::getUser();
// Messaging for new items
JModel::addIncludePath(JPATH_ADMINISTRATOR.'/components/com_messages/models', 'MessagesModel');
JTable::addIncludePath(JPATH_ADMINISTRATOR.'/components/com_messages/tables');
$db = JFactory::getDbo();
$db->setQuery('SELECT id FROM #__users WHERE sendEmail = 1');
$users = (array) $db->loadColumn();
$default_language = JComponentHelper::getParams('com_languages')->get('administrator');
$debug = JFactory::getConfig()->get('debug_lang');
foreach ($users as $user_id)
{
if ($user_id != $user->id) {
// Load language for messaging
$receiver = JUser::getInstance($user_id);
$lang = JLanguage::getInstance($receiver->getParam('admin_language', $default_language), $debug);
$lang->load('com_content');
$message = array(
'user_id_to' => $user_id,
'subject' => $lang->_('COM_CONTENT_NEW_ARTICLE'),
'message' => sprintf($lang->_('COM_CONTENT_ON_NEW_CONTENT'), $user->get('name'), $article->title)
);
$model_message = JModel::getInstance('Message', 'MessagesModel');
$model_message->save($message);
}
}
return true;
}
/**
* Don't allow categories to be deleted if they contain items or subcategories with items
*
* @param string The context for the content passed to the plugin.
* @param object The data relating to the content that was deleted.
* @return boolean
* @since 1.6
*/
public function onContentBeforeDelete($context, $data)
{
// Skip plugin if we are deleting something other than categories
if ($context != 'com_categories.category') {
return true;
}
// Check if this function is enabled.
if (!$this->params->def('check_categories', 1)) {
return true;
}
$extension = JRequest::getString('extension');
// Default to true if not a core extension
$result = true;
$tableInfo = array (
'com_banners' => array('table_name' => '#__banners'),
'com_contact' => array('table_name' => '#__contact_details'),
'com_content' => array('table_name' => '#__content'),
'com_newsfeeds' => array('table_name' => '#__newsfeeds'),
'com_weblinks' => array('table_name' => '#__weblinks')
);
// Now check to see if this is a known core extension
if (isset($tableInfo[$extension]))
{
// Get table name for known core extensions
$table = $tableInfo[$extension]['table_name'];
// See if this category has any content items
$count = $this->_countItemsInCategory($table, $data->get('id'));
// Return false if db error
if ($count === false)
{
$result = false;
}
else
{
// Show error if items are found in the category
if ($count > 0 ) {
$msg = JText::sprintf('COM_CATEGORIES_DELETE_NOT_ALLOWED', $data->get('title')) .
JText::plural('COM_CATEGORIES_N_ITEMS_ASSIGNED', $count);
JError::raiseWarning(403, $msg);
$result = false;
}
// Check for items in any child categories (if it is a leaf, there are no child categories)
if (!$data->isLeaf()) {
$count = $this->_countItemsInChildren($table, $data->get('id'), $data);
if ($count === false)
{
$result = false;
}
elseif ($count > 0)
{
$msg = JText::sprintf('COM_CATEGORIES_DELETE_NOT_ALLOWED', $data->get('title')) .
JText::plural('COM_CATEGORIES_HAS_SUBCATEGORY_ITEMS', $count);
JError::raiseWarning(403, $msg);
$result = false;
}
}
}
return $result;
}
}
/**
* Get count of items in a category
*
* @param string table name of component table (column is catid)
* @param int id of the category to check
* @return mixed count of items found or false if db error
* @since 1.6
*/
private function _countItemsInCategory($table, $catid)
{
$db = JFactory::getDbo();
$query = $db->getQuery(true);
// Count the items in this category
$query->select('COUNT(id)');
$query->from($table);
$query->where('catid = ' . $catid);
$db->setQuery($query);
$count = $db->loadResult();
// Check for DB error.
if ($error = $db->getErrorMsg())
{
JError::raiseWarning(500, $error);
return false;
}
else {
return $count;
}
}
/**
* Get count of items in a category's child categories
*
* @param string table name of component table (column is catid)
* @param int id of the category to check
* @return mixed count of items found or false if db error
* @since 1.6
*/
private function _countItemsInChildren($table, $catid, $data)
{
$db = JFactory::getDbo();
// Create subquery for list of child categories
$childCategoryTree = $data->getTree();
// First element in tree is the current category, so we can skip that one
unset($childCategoryTree[0]);
$childCategoryIds = array();
foreach ($childCategoryTree as $node) {
$childCategoryIds[] = $node->id;
}
// Make sure we only do the query if we have some categories to look in
if (count($childCategoryIds))
{
// Count the items in this category
$query = $db->getQuery(true);
$query->select('COUNT(id)');
$query->from($table);
$query->where('catid IN (' . implode(',', $childCategoryIds) . ')');
$db->setQuery($query);
$count = $db->loadResult();
// Check for DB error.
if ($error = $db->getErrorMsg())
{
JError::raiseWarning(500, $error);
return false;
}
else
{
return $count;
}
}
else
// If we didn't have any categories to check, return 0
{
return 0;
}
}
}
