Doctrine Symfony2理论是否支持；“私人/隐藏”；实体字段？

我正在寻找一个函数，以自动神奇的方式从文档中删除字段

比方说，我有一个

用户文档

，可以使用RESTful api匿名查询。当然，我想删除危险字段，例如

密码

或

秘密

等

文件：

// src/Acme/StoreBundle/Document/User.php
namespace Acme\StoreBundle\Document;

use Doctrine\ODM\MongoDB\Mapping\Annotations as MongoDB;

/**
 * @MongoDB\Document
 */
class Product
{
    /**
     * @MongoDB\Id
     */
    protected $id;

    /**
     * @MongoDB\String
     */
    protected $name;

    /**
     * @MongoDB\Float
     * @Hidden            // This field is "private"
     */
    protected $password;
}

控制器：

// src/Acme/StoreBundle/Controller/UserController.php
namespace Acme\StoreBundle\Controller;

class UserController extends RestController
{
    public function putUserAction(Request $request)
    {
        ...
        // Get the user by the username
        $user = $userManager->findUserByUsername('joe_schmoe');

        $user->removeHiddenFields(); // Just an example implementation

        ...
        // Returns the user object as JSON (I know how to do that, JFYI)
    }
}

看它的

/**
 * The following annotations tells the serializer to skip all properties which
 * have not marked with @Expose.
 *
 * @ExclusionPolicy("all")
 */
class MyObject
{
    private $foo;
    private $bar;

    /**
     * @Expose
     */
    private $name;
}