CakePHP2.x + Authコンポーネントで別々の認証を使う方法

AdminController.php

<?php
App::uses('AppController', 'Controller');
class AdminController extends AppController {
	public $name = 'Admin';
	public $uses = array('Administrator');
	
	public $components = array(
		'Session',
		'Auth' => array(
			'loginRedirect' => Array('controller'  => 'admin', 'action' => 'index'),
			'logoutRedirect' => Array('controller' => 'admin', 'action' => 'login'),
			'loginAction' => Array('controller' => 'admin', 'action' => 'login'),
			'authenticate' => Array('Form' => Array('userModel' => 'Administrator'))
		)
	);
	
	public function beforeFilter(){
		parent::beforeFilter();
		$this->Auth->allow('login','register');
		//ここでセッションキーを分けることで、認証を別にする
		AuthComponent::$sessionKey = "Auth.AdminUser";
	}
	
	public function index(){
		
	}
	
	public function login(){
		if ($this->request->is('post')) {
			if ($this->Auth->login()) {
				return $this->redirect($this->Auth->redirect());
			} else {
				$this->Session->setFlash(__('Username or password is incorrect'), 'default', array(), 'auth');
			}
		}
	}
	
	public function logout(){
		$this->redirect($this->Auth->logout());
	}
	
	public function register(){
		if ($this->request->is('post')) {
			if ($this->Administrator->save($this->request->data)) {
				$id = $this->Administrator->id;
				$this->request->data['Administrator'] = array_merge($this->request->data['Administrator'], array('id' => $id));
				$this->Auth->login($this->request->data['Administrator']);
				$this->redirect('/admin/');
			}
		}
	}
}

Administrator.php

<?php
class Administrator extends AppModel {
	public function beforeSave($options = array()) {
		$this->data['Administrator']['password'] = AuthComponent::password($this->data['Administrator']['password']);
		return true;
	}
}

User.php

<?php
class User extends AppModel {
	public function beforeSave($options = array()) {
		$this->data['User']['password'] = AuthComponent::password($this->data['User']['password']);
		return true;
	}
}

UserController.php

<?php
App::uses('AppController', 'Controller');
class UserController extends AppController {
	public $name = 'User';
	public $uses = array('User');
	
	public $components = array(
		'Session',
		'Auth' => array(
			'loginRedirect' => Array('controller'  => 'user', 'action' => 'index'),
			'logoutRedirect' => Array('controller' => 'user', 'action' => 'login'),
			'loginAction' => Array('controller' => 'user', 'action' => 'login'),
			'authenticate' => Array('Form' => Array('userModel' => 'User'))
		)
	);
	
	public function beforeFilter(){
		parent::beforeFilter();
		$this->Auth->allow('login','register');
		//ここでセッションキーを分けることで、認証を別にする
		AuthComponent::$sessionKey = "Auth.NormalUser";
	}
	
	public function index(){
		
	}
	
	public function login(){
		if ($this->request->is('post')) {
			if ($this->Auth->login()) {
				return $this->redirect($this->Auth->redirect());
			} else {
				$this->Session->setFlash(__('Username or password is incorrect'), 'default', array(), 'auth');
			}
		}
	}
	
	public function logout(){
		$this->redirect($this->Auth->logout());
	}
	
	public function register(){
		if ($this->request->is('post')) {
			if ($this->User->save($this->request->data)) {
				$id = $this->User->id;
				$this->request->data['User'] = array_merge($this->request->data['User'], array('id' => $id));
				$this->Auth->login($this->request->data['User']);
				$this->redirect('/user/');
			}
		}
	}
}