authentication - Login with username or email with Cakephp 3 -

i want login username or email. want change auth fields dynamically.

how can modify $this->auth fields cakehp 2 did?

in cakephp 2 do:

$this->auth->authenticate = array(     'form' => array(         'fields' => array('username' => 'email', 'password' => 'password'),     ), ); 

i've tried change authenticate doesn't work:

$this->auth->config('authenticate', [     'form' => [         'fields' => ['username' => 'email', 'password' => 'password']     ] ]); 

thanks!

i've found solution!

i assumed username alphanumeric (letters , numbers).

remember add $this->auth->constructauthenticate();

appcontroller.php

use cake\controller\controller; use cake\event\event; use cake\core\configure;  class appcontroller extends controller {     public function initialize()     {         parent::initialize();         $this->loadcomponent('flash');         $this->loadcomponent('auth', [             'loginredirect' => [                 'controller' => 'users',                 'action'     => 'index'             ],             'logoutredirect' => [                 'controller' => 'users',                 'action'     => 'login'             ]         ]);     } } 

userscontroller.php

use app\controller\appcontroller; use cake\validation\validation;  class userscontroller extends appcontroller {     public function login()     {         if ($this->request->is('post')) {              if (validation::email($this->request->data['username'])) {                 $this->auth->config('authenticate', [                     'form' => [                         'fields' => ['username' => 'email']                     ]                 ]);                 $this->auth->constructauthenticate();                 $this->request->data['email'] = $this->request->data['username'];                 unset($this->request->data['username']);             }              $user = $this->auth->identify();              if ($user) {                 $this->auth->setuser($user);                 return $this->redirect($this->auth->redirecturl());             }              $this->flash->error(__('invalid username or password, try again'));         }     } } 

login.ctp

<div class="form"> <?= $this->flash->render('auth') ?> <?= $this->form->create() ?>     <fieldset>         <legend><?= __('please enter username , password') ?></legend>         <?= $this->form->input('username') ?>         <?= $this->form->input('password') ?>     </fieldset> <?= $this->form->button(__('login')); ?> <?= $this->form->end() ?> </div>