Task

I have not added the authontication token here since when I apply it to my application it always redirects me to $this->Flash->error('Invalid username or password');

The steps that I followed to add the authentication are:

1. adding the authentication blugin using composer.
2. adding authentication in View/Application.php

//authentication use Authentication\AuthenticationService; use Authentication\AuthenticationServiceInterface; use Authentication\AuthenticationServiceProviderInterface; use Authentication\Identifier\IdentifierInterface; use Authentication\Middleware\AuthenticationMiddleware; use Cake\Routing\Router; use Psr\Http\Message\ServerRequestInterface;

// making my application implements Authentication class Application extends BaseApplication implements AuthenticationServiceProviderInterface{ public function bootstrap(): void { // Call parent to load bootstrap from files. parent::bootstrap(); $this->addPlugin('Authentication'); } public function getAuthenticationService(ServerRequestInterface $request): AuthenticationServiceInterface { $service = new AuthenticationService();

    // Define where users should be redirected to when they are not authenticated
    $service->setConfig([
        'unauthenticatedRedirect' => Router::url([
                'prefix' => false,
                'plugin' => null,
                'controller' => 'Users',
                'action' => 'login',
        ]),
        'queryParam' => 'redirect',
    ]);

    $fields = [
        IdentifierInterface::CREDENTIAL_USERNAME => 'email',
        IdentifierInterface::CREDENTIAL_PASSWORD => 'password',

    ];
    // Load the authenticators. Session should be first.
    $service->loadAuthenticator('Authentication.Session');
    $service->loadAuthenticator('Authentication.Form', [
        'fields' => $fields,
        'loginUrl' => Router::url([
            'prefix' => false,
            'plugin' => null,
            'controller' => 'Users',
            'action' => 'login',
        ]),
    ]);

    // Load identifiers
    $service->loadIdentifier('Authentication.Password', compact('fields'));

    return $service;
}
/**
 * Setup the middleware queue your application will use.
 *
 * @param \Cake\Http\MiddlewareQueue $middlewareQueue The middleware queue to setup.
 * @return \Cake\Http\MiddlewareQueue The updated middleware queue.
 */
public function middleware(MiddlewareQueue $middlewareQueue): MiddlewareQueue
{
    $middlewareQueue

        ->add(new ErrorHandlerMiddleware(Configure::read('Error')))

        // Handle plugin/theme assets like CakePHP normally does.
        ->add(new AssetMiddleware([
            'cacheTime' => Configure::read('Asset.cacheTime'),
        ]))

        // Add routing middleware.
        // If you have a large number of routes connected, turning on routes
        // caching in production could improve performance. For that when
        // creating the middleware instance specify the cache config name by
        // using it's second constructor argument:
        // `new RoutingMiddleware($this, '_cake_routes_')`
        ->add(new RoutingMiddleware($this))

        ->add(new BodyParserMiddleware())
        ->add(new AuthenticationMiddleware($this))
        
        ->add(new CsrfProtectionMiddleware([
            'httponly' => true,
        ]));

    return $middlewareQueue;
}
}

3. adding a login method in UsersController.php

   public function login() { $this->request->allowMethod(['get', 'post']); $result = $this->Authentication->getResult();

       if ($result->isValid()) {
           $target = $this->Authentication->getLoginRedirect() ?? '/home';
           return $this->redirect($target);
       } elseif ($this->request->is('post') && !$result->isValid()) {
           $this->Flash->error('Invalid username or password');
       }
   

   }

4. adding the authontication combonant in AppController.php

   public function initialize(): void { parent::initialize(); $this->loadComponent('Authentication.Authentication'); } public function beforeFilter(\Cake\Event\EventInterface $event) { parent::beforeFilter($event);

    $this->Authentication->allowUnauthenticated(['login']);
   

   }

5. adding a Template for login

   Form->create() ?> Form->control('email') ?> Form->control('password') ?> Form->control('password_Conformation',['type'=>'password']) ?> Form->button(__('Login')); ?> Form->end() ?>