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<?php
/**
* @package Joomla.Administrator
* @subpackage com_categories
*
* @copyright Copyright (C) 2005 - 2015 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE.txt
*/
defined('JPATH_BASE') or die;
JFormHelper::loadFieldClass('list');
/**
* Form Field class for the Joomla Framework.
*
* @since 1.6
*/
class JFormFieldCategoryEdit extends JFormFieldList
{
/**
* A flexible category list that respects access controls
*
* @var string
* @since 1.6
*/
public $type = 'CategoryEdit';
/**
* Method to get a list of categories that respects access controls and can be used for
* either category assignment or parent category assignment in edit screens.
* Use the parent element to indicate that the field will be used for assigning parent categories.
*
* @return array The field option objects.
*
* @since 1.6
*/
protected function getOptions()
{
$options = array();
$published = $this->element['published'] ? $this->element['published'] : array(0, 1);
$name = (string) $this->element['name'];
// Let's get the id for the current item, either category or content item.
$jinput = JFactory::getApplication()->input;
// Load the category options for a given extension.
// For categories the old category is the category id or 0 for new category.
if ($this->element['parent'] || $jinput->get('option') == 'com_categories')
{
$oldCat = $jinput->get('id', 0);
$oldParent = $this->form->getValue($name, 0);
$extension = $this->element['extension'] ? (string) $this->element['extension'] : (string) $jinput->get('extension', 'com_content');
}
else
// For items the old category is the category they are in when opened or 0 if new.
{
$oldCat = $this->form->getValue($name, 0);
$extension = $this->element['extension'] ? (string) $this->element['extension'] : (string) $jinput->get('option', 'com_content');
}
$db = JFactory::getDbo();
$query = $db->getQuery(true)
->select('DISTINCT a.id AS value, a.title AS text, a.level, a.published, a.lft');
$subQuery = $db->getQuery(true)
->select('id,title,level,published,parent_id,extension,lft,rgt')
->from('#__categories');
// Filter by the extension type
if ($this->element['parent'] == true || $jinput->get('option') == 'com_categories')
{
$subQuery->where('(extension = ' . $db->quote($extension) . ' OR parent_id = 0)');
}
else
{
$subQuery->where('(extension = ' . $db->quote($extension) . ')');
}
// Filter language
if (!empty($this->element['language']))
{
$subQuery->where('language = ' . $db->quote($this->element['language']));
}
// Filter on the published state
if (is_numeric($published))
{
$subQuery->where('published = ' . (int) $published);
}
elseif (is_array($published))
{
JArrayHelper::toInteger($published);
$subQuery->where('published IN (' . implode(',', $published) . ')');
}
$query->from('(' . $subQuery->__toString() . ') AS a')
->join('LEFT', $db->quoteName('#__categories') . ' AS b ON a.lft > b.lft AND a.rgt < b.rgt');
$query->order('a.lft ASC');
// If parent isn't explicitly stated but we are in com_categories assume we want parents
if ($oldCat != 0 && ($this->element['parent'] == true || $jinput->get('option') == 'com_categories'))
{
// Prevent parenting to children of this item.
// To rearrange parents and children move the children up, not the parents down.
$query->join('LEFT', $db->quoteName('#__categories') . ' AS p ON p.id = ' . (int) $oldCat)
->where('NOT(a.lft >= p.lft AND a.rgt <= p.rgt)');
$rowQuery = $db->getQuery(true);
$rowQuery->select('a.id AS value, a.title AS text, a.level, a.parent_id')
->from('#__categories AS a')
->where('a.id = ' . (int) $oldCat);
$db->setQuery($rowQuery);
$row = $db->loadObject();
}
// Get the options.
$db->setQuery($query);
try
{
$options = $db->loadObjectList();
}
catch (RuntimeException $e)
{
JError::raiseWarning(500, $e->getMessage());
}
// Pad the option text with spaces using depth level as a multiplier.
for ($i = 0, $n = count($options); $i < $n; $i++)
{
// Translate ROOT
if ($this->element['parent'] == true || $jinput->get('option') == 'com_categories')
{
if ($options[$i]->level == 0)
{
$options[$i]->text = JText::_('JGLOBAL_ROOT_PARENT');
}
}
if ($options[$i]->published == 1)
{
$options[$i]->text = str_repeat('- ', $options[$i]->level) . $options[$i]->text;
}
else
{
$options[$i]->text = str_repeat('- ', $options[$i]->level) . '[' . $options[$i]->text . ']';
}
}
// Get the current user object.
$user = JFactory::getUser();
// For new items we want a list of categories you are allowed to create in.
if ($oldCat == 0)
{
foreach ($options as $i => $option)
{
/* To take save or create in a category you need to have create rights for that category
* unless the item is already in that category.
* Unset the option if the user isn't authorised for it. In this field assets are always categories.
*/
if ($user->authorise('core.create', $extension . '.category.' . $option->value) != true && $option->level != 0)
{
unset($options[$i]);
}
}
}
// If you have an existing category id things are more complex.
else
{
/* If you are only allowed to edit in this category but not edit.state, you should not get any
* option to change the category parent for a category or the category for a content item,
* but you should be able to save in that category.
*/
foreach ($options as $i => $option)
{
if ($user->authorise('core.edit.state', $extension . '.category.' . $oldCat) != true && !isset($oldParent))
{
if ($option->value != $oldCat)
{
unset($options[$i]);
}
}
if ($user->authorise('core.edit.state', $extension . '.category.' . $oldCat) != true
&& (isset($oldParent))
&& $option->value != $oldParent)
{
unset($options[$i]);
}
// However, if you can edit.state you can also move this to another category for which you have
// create permission and you should also still be able to save in the current category.
if (($user->authorise('core.create', $extension . '.category.' . $option->value) != true)
&& ($option->value != $oldCat && !isset($oldParent)))
{
{
unset($options[$i]);
}
}
if (($user->authorise('core.create', $extension . '.category.' . $option->value) != true)
&& (isset($oldParent))
&& $option->value != $oldParent)
{
{
unset($options[$i]);
}
}
}
}
if (($this->element['parent'] == true || $jinput->get('option') == 'com_categories')
&& (isset($row) && !isset($options[0]))
&& isset($this->element['show_root']))
{
if ($row->parent_id == '1')
{
$parent = new stdClass;
$parent->text = JText::_('JGLOBAL_ROOT_PARENT');
array_unshift($options, $parent);
}
array_unshift($options, JHtml::_('select.option', '0', JText::_('JGLOBAL_ROOT')));
}
// Merge any additional options in the XML definition.
$options = array_merge(parent::getOptions(), $options);
return $options;
}
}