CakePHP 2.8.4：更改用户余额

Question

我想更改表格用户中帐户的余额。但我想在另一个Controller而不是UsersController中执行此操作。

M代码：

	public function myfunctionname() {
    $this->layout = 'customer';
    $this->loadModel('User');

    if ($this->request->is('post')) {
      // Some working stuff
				$this->User->updateAll(array('balance' => 'balance - 5'), array('customerid' => $this->Session->read('Auth.User.id')));
        $this->MyControllerName->create();
        if ($this->MyControllerName->save($this->request->data)) {
          $this->Flash->success( __('Success!'));
          $this->redirect('some redirect');
        } else {
          $this->Flash->error( __('Error!'));
        }
    }
	}

我会收到以下错误：

Database Error

Error: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'customerid' in 'where clause'

SQL Query: UPDATE `mydbname`.`users` AS `User` SET `User`.`balance` = balance - 5 WHERE `customerid` = '5' 

谢谢！

Answer 1

我明白了：

$this->User->updateAll(array('balance' => 'balance - 5'), array('id' => $this->Session->read('Auth.User.id')));