cakepp$this->；用户->；在登录用户的编辑功能上保存($this->；数据）错误

我正试图在cakepp中为一个登录用户创建"编辑"配置文件页面。这将是添加/编辑关于用户的信息的功能。我在执行$this->User->save（$this->data）函数时遇到了一个错误，我不明白问题出在哪里。

public function edit() {
   $this->User->id = $this->Auth->User('id');
    if ($this->request->is('post')) {
        if ($this->User->save($this->data)) {
            $this->Session->setFlash(__('The user has been saved'), 'flash_success');
           // $this->redirect($this->Auth->redirect());
        } else {
            var_dump($this->invalidFields());
            $this->Session->setFlash(__('The user could not be saved. Please, try again.'), 'flash_failure');
        }
    } else {
        //autocompleto il form
        $this->data = $this->User->read(null, $this->Auth->User('id'));
    }
}

观点是：

<?php 
echo $this->Form->create('User',array('action' => 'edit'));
echo $this->Form->input('name', array('label'=> 'Name'));
echo $this->Form->input('surname', array('label'=> 'Surname'));
echo $this->Form->input('id', array('type'=> 'hidden'));
echo $this->Form->end(__('Submit')); 
?>