cakephp - Display username after login in cakephp3 -

i want display username after login in cakephp3. write follow code part of show username doesn't work. user after login redirect main page.

hi <?php print $this->request->session()->read('user',$user); ?> 

login in usercontroller:

public function login() {     if ($this->request->session()->read('login_ok') == '1') {         $this->redirect(['controller' => 'users', 'action' => 'main']);     }     if ($this->request->is('post')) {         //$hasher = new defaultpasswordhasher();         $count = $this->users->find()                 ->where(['username' => $this->request->data['username'],                     //    'password' => $this->request->data['password']])                     'password' => md5($this->request->data['password'])])                 ->count();         if ($count > 0) {             $result = true;             $this->request->session()->write('user', $user); //store username             $this->request->session()->write('login_ok', '1');             $this->redirect(['controller' => 'users', 'action' => 'main']);          } else {             $result = false;         }         $this->set('result', $result);     } }     public function main() {     if ($this->request->session()->read('login_ok') != '1') {         $this->redirect(['controller' => 'users', 'action' => 'login']);     }      $query = $this->request->session()->write('user',$user);     $this->set('user', $query); } 

and main.ctp codes:

hi <?php print $this->request->session()->read('user', $user); ?> 

can in making code or suggest new code ?

you should using cakephp authcomponent , functions that's made example identifiying user trying login identify().

there no point using framework if you're not going use functions provided framework n nem pointed out in comments.

in snippet posted, seem never set $user variable when write session. need set able read it.

the following code how you're supposed in cakephp 3 suggest use approach.

appcontroller.php

public function initialize() {         $this->loadcomponent('auth', [                 'loginaction' => [                         'controller' => 'users',                         'action' => 'login'                 ],                 'loginredirect' => [                         'controller' => 'start',                         'action' => 'index'                 ],                 'logoutredirect' => [                         'controller' => 'users',                         'action' => 'login'                 ],                 'authenticate' => [                         'form'                 ],         ]); } 

userscontroller.php

public function login() {         if ($this->request->is('post')) {             $user = $this->auth->identify();             if ($user) {                 $this->auth->setuser($user);                 return $this->redirect($this->auth->redirecturl());             } else {                 $this->flash->error(__('username or password incorrect'), [                     'key' => 'auth'                 ]);             }         } } 

model/entity/user.php

protected function _setpassword($password) {        return (new defaultpasswordhasher)->hash($password); }