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<?php
/**
* @package com_zoo
* @author YOOtheme http://www.yootheme.com
* @copyright Copyright (C) YOOtheme GmbH
* @license http://www.gnu.org/licenses/gpl.html GNU/GPL
*/
/**
* The helper class for alias handling.
*
* @package Component.Helpers
* @since 2.0
*/
class AliasHelper extends AppHelper {
protected $_helper = array();
/**
* Retrieve AppAlias with table set
*
* @param string $name Table name to set
*
* @return AppAlias the alias helper for given table
*
* @since 2.0
*/
public function __get($name) {
if (!isset($this->_helper[$name])) {
if (!$table = $this->app->table->$name) {
throw new AliasHelperException(sprintf('Table class (%s) not found', $name));
}
$this->_helper[$name] = $this->app->object->create('AppAlias', array($this->app, $table));
}
return $this->_helper[$name];
}
}
class AppAlias {
/**
* Reference to the global App object
*
* @var App
* @since 1.0.0
*/
public $app;
/**
* Contains an instance of an AppTable object
*
* @var AppTable
* @since 2.0
*/
protected $_table;
public function __construct($app, $table) {
$this->app = $app;
$this->_table = $table;
}
/**
* Translate object id to alias.
*
* @param string $id The object id
*
* @return string|null The object alias if found
*
* @since 2.0
*/
public function translateIDToAlias($id) {
if (!is_numeric($id)) {
return null;
}
if ($this->_table->has($id)) {
return $this->_table->get($id)->alias;
}
// init vars
$db = $this->app->database;
// search alias
$query = 'SELECT alias'
.' FROM '.$this->_table->name
.' WHERE id = '.$db->Quote($id)
.' LIMIT 1';
return $db->queryResult($query);
}
/**
* Translate object alias to id.
*
* @param string $alias The object alias
*
* @return string The object id if found, or 0
*
* @since 2.0
*/
public function translateAliasToID($alias) {
// init vars
$db = $this->app->database;
// search alias
$query = 'SELECT id'
.' FROM '.$this->_table->name
.' WHERE alias = '.$db->Quote($alias)
.' LIMIT 1';
return $db->queryResult($query);
}
/**
* Get unique object alias.
*
* @param string $id The object id
* @param string $alias The object alias
*
* @return string The unique object alias string
*
* @since 2.0
*/
public function getUniqueAlias($id, $alias = '') {
if (empty($alias) && $id) {
$alias = $this->string->sluggify($this->_table->get($id)->name);
}
if (!empty($alias)) {
$new_alias = $alias;
while ($this->checkAliasExists($new_alias, $id)) {
$new_alias = JString::increment($new_alias, 'dash');
}
return $new_alias;
}
return $alias;
}
/**
* Method to check if an alias already exists.
*
* @param string $alias The object alias
* @param string $id The object id
*
* @return string The object id if found, or 0
*
* @since 2.0
*/
public function checkAliasExists($alias, $id = 0) {
$xid = intval($this->translateAliasToID($alias));
if ($xid && $xid != intval($id)) {
return true;
}
return false;
}
}
/**
* AliasHelperException identifies an Exception in the AliasHelper class
* @see AliasHelper
*/
class AliasHelperException extends AppException {}