更改表单的错误消息类？

I'm new to CakePHP. I tried to change the default class error-message to error by following the official docs this way:

<?php
echo $this->Form->create('Post', array(
    'inputDefaults' => array(
        'error' => array(
            'wrap' => 'small',
            'class' => 'error'
        )
    )
)); ?>

But when error occurred, it still uses the default div.error-message.

I also tried to set the code to each individual input. But still no effect:

$this->Form->input('title', array('error' => array('wrap' => 'small', 'class' => 'error')));

I'm using CakePHP 2.3.2

Any solution? Thanks

Oops, I read the 1.3 Documentation which is not compatible with 2.3.

For version 2.0 above, we need to add attributes array inside the error array:

<?php
echo $this->Form->create('Post', array(
    'inputDefaults' => array(
        'error' => array(
            'attributes' => array(
                'wrap' => 'small', 'class' => 'error'
            )
        )
    )
)); ?>

Thanks