how to make login with only one field + cakephp 2.x - cakephp

Question

I am trying to make a login by getting/authorizing only one input *user_number* (Not username - password).
I made my current login page with the following way:
Cakephp2.x simple login
Any help plz!

Answer 1

Keep it simple
If you only have one way of identifying users, the simplest (and therefore recommended) way to identify users would be to define your own login function. e.g.:
public function login() {
if ($this->request->is('post')) {
$number = $this->request->data['User']['user_number'];
$user = $this->User->findByUserNumber($number);
if ($user && $this->Auth->login($user)) {
return $this->redirect($this->Auth->redirectUrl());
} else {
$this->Session->setFlash(__('User %d doesn\'t exist', $number), 'default', array(), 'auth');
}
}
}
Note that this varies very little from the standard way of logging a user in with Cake 2.x

Answer 2

Create a Custom Authentication object
Create a Custom Authentication object that authenticates uses by user-number only;
Creating Custom Authentication objects
app/Controller/Component/Auth/UserNumberAuthenticate.php
App::uses('BaseAuthenticate', 'Controller/Component/Auth');
class UserNumberAuthenticate extends BaseAuthenticate {
public function authenticate(CakeRequest $request, CakeResponse $response) {
$userModel = $this->settings['userModel'];
list($plugin, $model) = pluginSplit($userModel);
$fields = $this->settings['fields'];
if (
empty($request->data[$model])
|| empty($request->data[$model][$fields['username']])
) {
return false;
}
return $this->_findUser($request->data[$model][$fields['username']]);
}
/**
* Find a user record via his user-number/identifier
*
* #param string $usernumber The user-number/identifier.
* #return Mixed Either false on failure, or an array of user data.
*/
protected function _findUser($usernumber) {
$userModel = $this->settings['userModel'];
list($plugin, $model) = pluginSplit($userModel);
$fields = $this->settings['fields'];
$conditions = array(
$model . '.' . $fields['username'] => $usernumber,
);
if (!empty($this->settings['scope'])) {
$conditions = array_merge($conditions, $this->settings['scope']);
}
$result = ClassRegistry::init($userModel)->find('first', array(
'conditions' => $conditions,
'recursive' => $this->settings['recursive'],
'contain' => $this->settings['contain'],
));
if (empty($result) || empty($result[$model])) {
return false;
}
$user = $result[$model];
unset($result[$model]);
return array_merge($user, $result);
}
}
Then specify that you want to use your custom authentication object
Inside your AppController:
public $components = array(
'Auth' => array(
'authenticate' => array(
'UserNumber' => array(
'userModel' => 'User',
'fields' => array('username' => 'user_number')
)
)
)
);