<?php
/* SVN FILE: $Id$ */
/**
* Short description for file.
*
* Long description for file
*
* PHP versions 4 and 5
*
* CakePHP : Rapid Development Framework <http://www.cakephp.org/>
* Copyright (c) 2005, Cake Software Foundation, Inc.
* 1785 E. Sahara Avenue, Suite 490-204
* Las Vegas, Nevada 89104
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @filesource
* @copyright Copyright (c) 2005, Cake Software Foundation, Inc.
* @link http://www.cakefoundation.org/projects/info/cakephp CakePHP Project
* @package cake
* @subpackage cake.cake.libs.controller.components.dbacl.models
* @since CakePHP v 0.10.0.1232
* @version $Revision$
* @modifiedby $LastChangedBy$
* @lastmodified $Date$
* @license http://www.opensource.org/licenses/mit-license.php The MIT License
*/
/**
* Short description.
*/
require_once(CAKE . 'app_model.php');
/**
* Short description for file.
*
* Long description for file
*
* @package cake
* @subpackage cake.cake.libs.controller.components.dbacl.models
* @since CakePHP v 0.10.0.1232
*
*/
class AclNode extends AppModel
{
/**
* Enter description here...
*
* @var unknown_type
*/
var $useTable = false;
/**
* Enter description here...
*
*/
function __construct($object = null, $parent = null)
{
parent::__construct();
$this->__setTable();
if($object != null)
{
$this->create($object, $parent);
}
exit();
}
/**
* Enter description here...
*
* @param unknown_type $object A new ACL object. This can be a string for alias-based ACL, or a Model for object-based ACL
* @param unknown_type $parent The parent object
* @return unknown
*/
function create($object = null, $parent = null)
{
if (strtolower(get_class($this)) == "aclnode")
{
trigger_error(ERROR_ABSTRACT_CONSTRUCTION, E_USER_ERROR);
return NULL;
}
parent::create();
pr($this->__dataVars());
exit();
extract($this->__dataVars());
if($parent_id == null || $parent_id === 0)
{
$parent = $this->find(null, "MAX(rght)");
$parent['lft'] = $parent[0]['MAX(rght)'];
if($parent[0]['MAX(rght)'] == null)
{
// The tree is empty
$parent['lft'] = 0;
}
}
else
{
$parent = $this->find($this->_resolveID($parent_id, $secondary_id));
if($parent == null || count($parent) == 0)
{
trigger_error("Null parent in {$class}::create()", E_USER_ERROR);
}
$parent = $parent[$class];
$this->_syncTable($table_name, 1, $parent['lft'], $parent['lft']);
}
$return = $this->save(array($class => array(
$secondary_id => $link_id,
'alias' => $alias,
'lft' => $parent['lft'] + 1,
'rght' => $parent['lft'] + 2
)));
$this->setId($this->getLastInsertID());
return $return;
}
/**
* Enter description here...
*
* @param unknown_type $parent_id
* @param unknown_type $id
* @return unknown
*/
function setParent($parent_id = null, $id = null)
{
if (strtolower(get_class($this)) == "aclnode")
{
trigger_error(ERROR_ABSTRACT_CONSTRUCTION, E_USER_ERROR);
return null;
}
extract($this->__dataVars());
if($id == null && $this->id == false)
{
return false;
}
else if($id == null)
{
$id = $this->id;
}
$object = $this->find($this->_resolveID($id, $secondary_id));
if($object == null || count($object) == 0)
{
// Couldn't find object
return false;
}
$parent = $this->getParent(intval($object[$class][$secondary_id]));
// Node is already at root, or new parent == old parent
if(($parent == null && $parent_id == null) || ($parent_id == $parent[$class][$secondary_id]) || ($parent_id == $parent[$class]['alias']))
{
return false;
}
if($parent_id != null && $parent[$class]['lft'] <= $object[$class]['lft'] && $parent[$class]['rght'] >= $object[$class]['rght'])
{
// Can't move object inside self or own child
return false;
}
$this->_syncTable($table_name, 0, $object[$class]['lft'], $object[$class]['lft']);
if($parent_id == null)
{
$parent = $this->find(null, "MAX(rght)");
$parent['lft'] = $parent[0]['MAX(rght)'];
}
else
{
$parent = $this->find($this->_resolveID($parent_id, $secondary_id));
$parent = $parent[$class];
$this->_syncTable($table_name, 1, $parent['lft'], $parent['lft']);
}
$object[$class]['lft'] = $parent['lft'] + 1;
$object[$class]['rght'] = $parent['lft'] + 2;
$this->save($object);
if($parent['lft'] == 0)
{
$this->_syncTable($table_name, 2, $parent['lft'], $parent['lft']);
}
}
/**
* Enter description here...
*
* @param unknown_type $id
* @return unknown
*/
function getParent($id)
{
$path = $this->getPath($id);
if($path == null || count($path) < 2)
{
return null;
}
else
{
return $path[count($path) - 2];
}
}
/**
* The path to a node as an array, where the first element of the array is at the root of the tree, and the last element is the requested node
*
* @param mixed $id
* @return array
*/
function getPath($id)
{
if (strtolower(get_class($this)) == "aclnode")
{
trigger_error(ERROR_ABSTRACT_CONSTRUCTION, E_USER_ERROR);
return NULL;
}
extract($this->__dataVars());
$item = $this->find($this->_resolveID($id, $secondary_id));
if($item == null || count($item) == 0)
{
return null;
}
return $this->findAll("lft <= {$item[$class]['lft']} and rght >= {$item[$class]['rght']}");
}
/**
* Gets the child nodes of a specified element
*
* @param mixed $id
* @return array
*/
function getChildren($id)
{
if (strtolower(get_class($this)) == "aclnode")
{
trigger_error(ERROR_ABSTRACT_CONSTRUCTION, E_USER_ERROR);
return NULL;
}
extract($this->__dataVars());
$item = $this->find($this->_resolveID($id, $secondary_id));
return $this->findAll("lft > {$item[$class]['lft']} and rght < {$item[$class]['rght']}");
}
/**
* Gets a reference to a node object
*
* @param unknown_type $obj
* @param unknown_type $fKey
* @return unknown
*/
function _resolveID($obj, $fKey)
{
extract($this->__dataVars());
if(is_object($obj))
{
if(isset($obj->id) && isset($obj->name))
{
return "model = '{$obj->name}' and {$secondary_id} = {$obj->id}";
}
return null;
}
else if(is_array($obj))
{
$keys = array_keys($obj);
$key1 = $keys[0];
if(is_string($key1) && is_array($obj[$key1]) && isset($obj[$key1]['id']))
{
return "model = '{$key1}' and {$secondary_id} = {$obj[$key1]['id']}";
}
return null;
}
else if(is_string($obj))
{
$path = explode('/', $obj);
}
$key = (is_string($id) ? 'alias' : $fKey);
$val = (is_string($id) ? '"' . addslashes($id) . '"' : $id);
return "{$key} = {$val}";
}
/**
* Private method: modifies the left and right values of affected nodes in a tree when a node is added or removed
*
* @param string $table aros or acos, depending on the tree to be modified
* @param int $dir The direction in which to shift the nodes
* @param int $lft The left position of the node being added or removed
* @param int $rght The right position of the node being added or removed
*/
function _syncTable($table, $dir, $lft, $rght)
{
$shift = ($dir == 2 ? 1 : 2);
$table = strtolower($table);
$this->db->query("UPDATE {$table} SET rght = rght " . ($dir > 0 ? "+" : "-") . " {$shift} WHERE rght > " . $rght);
$this->db->query("UPDATE {$table} SET lft = lft " . ($dir > 0 ? "+" : "-") . " {$shift} WHERE lft > " . $lft);
}
/**
* Enter description here...
*
* @return unknown
*/
function __dataVars()
{
$vars = array();
$class = Inflector::camelize(strtolower(get_class($this)));
$vars['secondary_id'] = (strtolower($class) == 'aro' ? 'user_id' : 'object_id');
$vars['data_name'] = $class;
$vars['table_name'] = $class . 's';
$vars['class'] = Inflector::camelize($class);
return $vars;
}
/**
* Enter description here...
*
*/
function __setTable()
{
$this->table = strtolower(get_class($this)) . "s";
}
}
?>