cakePHP注册don'；行不通

我是CakePHP新手，只是从烹饪书的例子开始。现在我想用我的custome表列创建一个简单的注册和登录表单。但是系统不想插入数据！我的错在哪里？在AppController中告诉他要使用哪些字段对吗

add.ctp=

<div class="users_form">
<?= $this->Form->create($user) ?>
<fieldset>
    <legend><?= __('Add') ?></legend>
    <?= $this->Form->input('username') ?>
    <?= $this->Form->input('password') ?>

</fieldset>
<?= $this->Form->button(__('Submit')); ?>
<?= $this->Form->end() ?>

AppController.php

 parent::initialize();

    $this->loadComponent('RequestHandler');
    $this->loadComponent('Flash');
     $this->loadComponent('Auth', [
    'authenticate' => [
        'Form' => [
            'fields' => ['username' => 'ab_mail', 'password' => 'ab_pass']
        ]
    ]
]);

 public function add()
{
    $user = $this->Users->newEntity();
    if ($this->request->is('post'))
    {
        $user = $this->Users->patchEntity($user, $this->request->data);
        if ($this->Users->save($user)) 
        {
            $this->Flash->success(__('inserted!'));
            return $this->redirect(['action' => 'add']);
        }
        $this->Flash->error(__('Error!'));
    }
    $this->set('user', $user);
}

parent::initialize();

    $this->loadComponent('RequestHandler');
    $this->loadComponent('Flash');
     $this->loadComponent('Auth', [
    'authenticate' => [
        'Form' => [
            'fields' => ['username' => 'username', 'password' => 'password'] // Password and Username fields are pre-define in cakephp.
        ]
    ]
]);

UsersController.php

 parent::initialize();

    $this->loadComponent('RequestHandler');
    $this->loadComponent('Flash');
     $this->loadComponent('Auth', [
    'authenticate' => [
        'Form' => [
            'fields' => ['username' => 'ab_mail', 'password' => 'ab_pass']
        ]
    ]
]);

 public function add()
{
    $user = $this->Users->newEntity();
    if ($this->request->is('post'))
    {
        $user = $this->Users->patchEntity($user, $this->request->data);
        if ($this->Users->save($user)) 
        {
            $this->Flash->success(__('inserted!'));
            return $this->redirect(['action' => 'add']);
        }
        $this->Flash->error(__('Error!'));
    }
    $this->set('user', $user);
}

parent::initialize();

    $this->loadComponent('RequestHandler');
    $this->loadComponent('Flash');
     $this->loadComponent('Auth', [
    'authenticate' => [
        'Form' => [
            'fields' => ['username' => 'username', 'password' => 'password'] // Password and Username fields are pre-define in cakephp.
        ]
    ]
]);

---

将视图中的表单元素更改为：

<?= $this->Form->input('ab_mail') ?>
<?= $this->Form->input('ab_pass') ?>

---

将视图中的表单元素更改为：

<?= $this->Form->input('ab_mail') ?>
<?= $this->Form->input('ab_pass') ?>

---

需要在AppController.php中进行更改

 parent::initialize();

    $this->loadComponent('RequestHandler');
    $this->loadComponent('Flash');
     $this->loadComponent('Auth', [
    'authenticate' => [
        'Form' => [
            'fields' => ['username' => 'ab_mail', 'password' => 'ab_pass']
        ]
    ]
]);

 public function add()
{
    $user = $this->Users->newEntity();
    if ($this->request->is('post'))
    {
        $user = $this->Users->patchEntity($user, $this->request->data);
        if ($this->Users->save($user)) 
        {
            $this->Flash->success(__('inserted!'));
            return $this->redirect(['action' => 'add']);
        }
        $this->Flash->error(__('Error!'));
    }
    $this->set('user', $user);
}

parent::initialize();

    $this->loadComponent('RequestHandler');
    $this->loadComponent('Flash');
     $this->loadComponent('Auth', [
    'authenticate' => [
        'Form' => [
            'fields' => ['username' => 'username', 'password' => 'password'] // Password and Username fields are pre-define in cakephp.
        ]
    ]
]);

这肯定会奏效的

---

谢谢：）

需要在AppController.php中进行更改

 parent::initialize();

    $this->loadComponent('RequestHandler');
    $this->loadComponent('Flash');
     $this->loadComponent('Auth', [
    'authenticate' => [
        'Form' => [
            'fields' => ['username' => 'ab_mail', 'password' => 'ab_pass']
        ]
    ]
]);

 public function add()
{
    $user = $this->Users->newEntity();
    if ($this->request->is('post'))
    {
        $user = $this->Users->patchEntity($user, $this->request->data);
        if ($this->Users->save($user)) 
        {
            $this->Flash->success(__('inserted!'));
            return $this->redirect(['action' => 'add']);
        }
        $this->Flash->error(__('Error!'));
    }
    $this->set('user', $user);
}

parent::initialize();

    $this->loadComponent('RequestHandler');
    $this->loadComponent('Flash');
     $this->loadComponent('Auth', [
    'authenticate' => [
        'Form' => [
            'fields' => ['username' => 'username', 'password' => 'password'] // Password and Username fields are pre-define in cakephp.
        ]
    ]
]);

这肯定会奏效的

---

谢谢：）

已修复。如果有人对解决方案感兴趣，只需添加一条注释。已修复。如果有人对解决方案感兴趣，只需添加评论即可。