I would like to send an e-mail for registration via CakePHP.

Error: SQLSTATE [42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that responses to your MySQL server version for the right syntax to use getActivationHash' at line 1: SQLAction

public$components=array('Auth');

public function beforeFilter() {
    $this->Auth->allow('signup');
}

public function signup()
{
    if($this->request->is('post'))){
        if($this->User->save($this->data)){
            $url = 'activate/'.$this->User->id.'/'.$this->User->getActivationHash();
            $url = Router::url($url, true);

            $email = new CakeEmail();
            $email->from(array('[email protected]'=>'Sender'));
            $email->to($this->data['User']['email']);
            $email->subject('Registration mail');
            $email->send($url);

            $this->Session->setFlash('Registration successful');
        } else {
            $this->Session->setFlash('Error');
        }
    }
}

class EmailConfig {

public$default=array(
    'transport' = > 'Mail',
    'from' = > 'you@localhost',
    // 'charset' = > 'utf-8',
    // 'headerCharset' = > 'utf-8',
);

public$smtp=array(
    'transport' = > 'ssl://Smtp.gmail.com',
    'from'=>array('site@localhost'=>'My Site'),
    'host' = > 'localhost',
    'port' = > 587,
    'timeout' = > 30,
    'username' = > 'root',
    'password' = > 'root',
    'client' = > null,
    'log' = > false,
    // 'charset' = > 'utf-8',
    // 'headerCharset' = > 'utf-8',
);