auth認証で登録は出来るがログインできない

タイトル通りの質問です。cakephpのauthコンポーネントを使用してログイン機能を入れようとしています。
登録は出来るのですが、ログインすることができません。

cakephpのチュートリアルとあまり変わったことはせず、以前に練習でチュートリアル通りに試してみた時にはきちんと機能していました。

なので、今回も前回のものを元にコードを書いてみたのですが、上手く機能しません。

teratailで似た内容の質問なども確認して試してみたのですが、解決には至りませんでした。

もしかすると、saltやcipherSeedあたりが原因かもしれません。赤いnoticeが出たので変更はしました。
登録時とログイン時でsaltやcipherSeedの値が変わってしまったからとも思い、変更後に新たに登録したものでログインも試みましたが、結果は変わりませんでした。

ログイン周りのコードを以下に記載します。具体的にどこが駄目なのか説明してくださると助かります。よろしくお願いします。

//controller/UsersController.php
<?php
App::uses('AppController', 'Controller');
class UsersController extends AppController {

    public $components = array('Paginator', 'Flash', 'Session',    'Auth');

    public function beforeFilter() {
        parent::beforeFilter();
        // ユーザー自身による登録とログアウトを許可する
        $this->Auth->allow('add', 'logout');
    }

    public function isAuthorized($user) {
        if (in_array($this->action, array('view', 'edit', 'delete'))) {
            $postId = (int) $this->request->params['pass'][0];
            if ($this->Auth->user('id') == $postId) {
                return true;
            }
        }
        return parent::isAuthorized($user);
    }

    public function index() {
        $this->User->recursive = 0;
        $this->set('users', $this->Paginator->paginate());
    }

    public function view($id = null) {
        if (!$this->User->exists($id)) {
            throw new NotFoundException(__('Invalid user'));
        }
        $options = array('conditions' => array('User.' . $this->User->primaryKey => $id));
        $this->set('user', $this->User->find('first', $options));
    }

    public function add() {
        if ($this->request->is('post')) {
            $this->User->create();
            if ($this->User->save($this->request->data)) {
                $this->Flash->success(__('The user has been saved.'));
                return $this->redirect(array('controller' => 'sites', 'action' => 'index'));
            } else {
                $this->Flash->error(__('The user could not be saved. Please, try again.'));
            }
        }
    }

    public function edit($id = null) {
        if (!$this->User->exists($id)) {
            throw new NotFoundException(__('Invalid user'));
        }
        if ($this->request->is(array('post', 'put'))) {
            if ($this->User->save($this->request->data)) {
                $this->Flash->success(__('The user has been saved.'));
                return $this->redirect(array('action' => 'index'));
            } else {
                $this->Flash->error(__('The user could not be saved. Please, try again.'));
            }
        } else {
            $options = array('conditions' => array('User.' . $this->User->primaryKey => $id));
            $this->request->data = $this->User->find('first', $options);
        }
    }

    public function delete($id = null) {
        $this->User->id = $id;
        if (!$this->User->exists()) {
            throw new NotFoundException(__('Invalid user'));
        }
        $this->request->allowMethod('post', 'delete');
        if ($this->User->delete()) {
            $this->Flash->success(__('The user has been deleted.'));
        } else {
            $this->Flash->error(__('The user could not be deleted. Please, try again.'));
        }
        return $this->redirect(array('action' => 'index'));
    }

    public function login() {
        if ($this->request->is('post')) {
            if ($this->Auth->login()) {
                $this->redirect($this->Auth->redirect());
            } else {
                $this->Flash->error(__('Invalid username or password, try again'));
            }
        }
    }

    public function logout() {
        $this->redirect($this->Auth->logout());
    }
}

//Controller/AppController.php
<?php

App::uses('Controller', 'Controller');

class AppController extends Controller {
    public $components = array(
        'Flash',
        'Auth' => array(
            'loginRedirect' => array(
                'controller' => 'sites',
                'action' => 'index'
            ),
            'logoutRedirect' => array(
                'controller' => 'sites'/*'pages'*/,
                'action' => 'index'/*'display',
                'home'*/
            ),
            'authenticate' => array(
                'Form' => array(
                    'passwordHasher' => 'Blowfish'
                )
            ),
            'authorize' => array('Controller')
        )
    );

    public function beforeFilter() {
        $this->Auth->allow('index', 'view', 'edit', 'search');
        $this->set('auth',$this->Auth);//これがないとログインログアウトの表示切替ができない
    }

    public function isAuthorized($user) {
        return false;
    }
}

//model/User.php
<?php
App::uses('AppModel', 'Model');
App::uses('BlowfishPasswordHasher', 'Controller/Component/Auth');

/**
 * User Model
 *
 * @property Plan $Plan
 */
class User extends AppModel {

/**
 * Validation rules
 *
 * @var array
 */
    public $validate = array(
        'user_name' => array(
            'notBlank' => array(
                'rule' => array('notBlank'),
                //'message' => 'Your custom message here',
                //'allowEmpty' => false,
                //'required' => false,
                //'last' => false, // Stop validation after this rule
                //'on' => 'create', // Limit validation to 'create' or 'update' operations
            ),
        ),
        'password' => array(
            'notBlank' => array(
                'rule' => array('notBlank'),
                //'message' => 'Your custom message here',
                //'allowEmpty' => false,
                //'required' => false,
                //'last' => false, // Stop validation after this rule
                //'on' => 'create', // Limit validation to 'create' or 'update' operations
            ),
        ),
        'e-mail' => array(
            'email' => array(
                'rule' => array('email'),
                //'message' => 'Your custom message here',
                //'allowEmpty' => false,
                //'required' => false,
                //'last' => false, // Stop validation after this rule
                //'on' => 'create', // Limit validation to 'create' or 'update' operations
            ),
        ),
    );

    public function beforeSave($options = array()) {
        if (isset($this->data[$this->alias]['password'])) {
            $passwordHasher = new BlowfishPasswordHasher();
            $this->data[$this->alias]['password'] = $passwordHasher->hash(
                $this->data[$this->alias]['password']
            );
        }
        return true;
    }

    // The Associations below have been created with all possible keys, those that are not needed can be removed

/**
 * hasAndBelongsToMany associations
 *
 * @var array
 */
    public $hasAndBelongsToMany = array(
        'Plan' => array(
            'className' => 'Plan',
            'joinTable' => 'users_plans',
            'foreignKey' => 'user_id',
            'associationForeignKey' => 'plan_id',
            'unique' => 'keepExisting',
            'conditions' => '',
            'fields' => '',
            'order' => '',
            'limit' => '',
            'offset' => '',
            'finderQuery' => '',
        )
    );

}

//view/login.ctp
<div class="users form">
<?php echo $this->Flash->render('auth'); ?>
<?php echo $this->Form->create('User'); ?>
    <fieldset>
        <legend>
            <?php echo __('Please enter your username and password'); ?>
        </legend>
        <?php 
            echo $this->Form->input('username');
            echo $this->Form->input('password');
        ?>
    </fieldset>
<?php echo $this->Form->end(__('Login')); ?>
</div>