在cakephp 3.4中使用前缀（admin）的情况下，表单提交重定向到webroot / admin

Question

我在从admin部分提交表单时遇到了不确定的问题。我在routes.php中使用前缀是routes.php的前缀代码

Router::prefix('admin', function ($routes) {
    // Because you are in the admin scope,
    // you do not need to include the /admin prefix
    // or the admin route element.
    $routes->connect('/', ['controller' => 'Users', 'action' => 'index']);
    $routes->extensions(['json', 'xml']);
    // All routes here will be prefixed with `/admin`
    //$routes->connect('/admin', ['controller' => 'Users', 'action' => 'index']);
    // And have the prefix => admin route element added.
    $routes->fallbacks(DashedRoute::class);
}); 

下面是我的app控制器授权码： -

$this->loadComponent('Auth', [
    'loginAction' => [
        'controller' => 'Users',
        'action' => 'index',
        'plugin' => null
    ],
    //'authorize' => ['Controller'],
    'loginRedirect' => [
        'controller' => 'Users',
        'action' => 'dashboard'
    ],
    'logoutRedirect' => [
        'controller' => 'Users',
        'action' => 'index',
        ''
    ],
    'authenticate' => [
        'Form' => [
            'fields' => ['username' => 'email', 'password' => 'password']
        ]
    ],
    'authError' => 'Did you really think you are allowed to see that?',
    'storage' => 'Session'
]); 

以下是主要的用户控制器功能： -

public function beforeFilter(\Cake\Event\Event $event)
{
    parent::beforeFilter($event);
    $this->loadComponent('RequestHandler'); 

    $this->Auth->allow(['index','logout','register']);      
}

默认情况下，用户控制器登录功能设置索引： -

public function index()
{
    $this->viewBuilder()->layout('adminlogin');
    if ($this->request->is('post')) {

        $user = $this->Auth->identify();
        if ($user){
            $this->Auth->setUser($user);
            return $this->redirect($this->Auth->redirectUrl());
        }else{
            return $this->redirect($this->Auth->redirectUrl());
        }
        $this->Flash->error(__('Invalid username or password, try again'));
    }
}

最后，这是注册用户，当我提交注册表单时，它会在数据库中成功保存数据，然后重定向到BASEURL / webroot / admin

public function register()
{
    $this->viewBuilder()->layout('adminlogin');     
    $this->loadModel('Users');
    $user = $this->Users->newEntity();
    if ($this->request->is('post')) {
        $user = $this->Users->patchEntity($user, $this->request->getData());
        if ($this->Users->save($user)) {
            $this->Flash->success(__('The user has been saved.'));

            return $this->redirect(['controller' => 'Users','action' => 'index']);
        }
        $this->Flash->error(__('The user could not be saved. Please, try again.'));
    }

    $user = $this->Users->newEntity();
    $this->set('user', $user);
}

用户是登录表单操作： -

<?php echo $this->Form->create(null, ['url' => ['controller' => 'Users', 'action' => 'index']]); ?>