Php Zend Form-我可以'；t荷载元件'；装饰器类文件

我有这样的表格：

class Form_RegistrationForm extends Zend_Form {

    public function init()
    {

           [...]
           $username = new Zend_Form_Element_Text('username');
           $email = new Zend_Form_Element_Text('email');
           [...]

           $elements = array($username, $email, [...]);
           foreach($elements as $element) {

               $element->addPrefixPath('Form_Decorator', 'Form/Decorator', 'decorator');
               $element->addValidator('CustomErrors');

               $this->AddElement($element);

           }
    }
}

我在

/application/modules/Form/decorator/CustomErrors.php中找到了我的decorator。
我将decorator命名为：
class Form\u decorator\u CustomErrors extensed Zend\u Form\u decorator\u Abstract

问题是Zend找不到我的装饰师。
我收到错误消息：注册表中找不到名为“CustomErrors”的插件；使用的路径：Zend\u验证\ Zend/Validate/

这有点奇怪，因为Zend似乎忽略了我定义的路径

我的appication.ini文件：

[production]
phpSettings.display_startup_errors = 0
phpSettings.display_errors = 0
includePaths.library = APPLICATION_PATH "/../library"
bootstrap.path = APPLICATION_PATH "/Bootstrap.php"
bootstrap.class = "Bootstrap"
resources.frontController.controllerDirectory = APPLICATION_PATH "/controllers"
resources.layout.layoutPath = APPLICATION_PATH "/layouts/scripts"
resources.view[] =
url.full = http://87.199.35.20/Kreskoweczki/bp/
resources.db.adapter = PDO_MYSQL
resources.db.params.host = localhost
resources.db.params.username = root
resources.db.params.password = 
resources.db.params.dbname = kreskoweczki
resources.db.params.charset = utf8
resources.db.params.prefix = kres_

;Mail transport settings

;mail.smpt - when false - sendmail is used

mail.smtp=true
mail.host=127.0.0.1
mail.smtpconfig.name=localhost
mail.smtpconfig.port=25
;mail.smtpconfig.auth = plain | login | crammd5
mail.smtpconfig.auth=
mail.smtpconfig.username=
mail.smtpconfig.password=
mail.from=no-reply@example.com

[staging : production]

[testing : production]
phpSettings.display_startup_errors = 1
phpSettings.display_errors = 1

[development : production]
phpSettings.display_startup_errors = 1
phpSettings.display_errors = 1

My index.php：

<?php

// Define path to application directory
defined('APPLICATION_PATH')
    || define('APPLICATION_PATH', realpath(dirname(__FILE__) . '/../application'));

// Define application environment
defined('APPLICATION_ENV')
    || define('APPLICATION_ENV', (getenv('APPLICATION_ENV') ? getenv('APPLICATION_ENV') : 'production'));

// Ensure library/ is on include_path
 set_include_path(
    '../library/' . PATH_SEPARATOR .    
    '../application/modules/' . PATH_SEPARATOR .    
    '../application/' . PATH_SEPARATOR .
    get_include_path() 
);

/** Zend_Application */
require_once 'Zend/Application.php';

// Create application, bootstrap, and run
$application = new Zend_Application(
    APPLICATION_ENV,
    APPLICATION_PATH . '/configs/application.ini'
);

$application->bootstrap()->run();

//对于所有元素：

$form->addElementPrefixPath('My_Decorator', 'My/Decorator/', 'decorator');

//使用以下单个装饰器覆盖现有装饰器：

$element->setDecorators(array('CustomDecorator'));

$element->getPluginLoader（'decorator'）->GetPath（）返回什么？在
$element->addPrefixPath（'Form_Decorator'，'Form/Decorator'，'Decorator'）之后调用它