• 原文出处：12b-mapping_mongodb.md

• 原文作者：FriendsOfSymfony

• 授权许可：创作共用协议

• 翻译人员：FireHare

• 校对人员：

• 适用版本：FOSCommentBundle 2.0.5

• 文章状态：草译阶段

Step 12b: Setup MongoDB mapping

The MongoDB implementation does not provide a concrete Vote class for your use,you must create one:

ROM实现并没有提供一个具体的Vote类给您使用，您需要创建一个：

<?php
// src/MyProject/MyBundle/Document/Vote.php
namespace MyProject\MyBundle\Document;
use Doctrine\ODM\MongoDB\Mapping\Annotations as MongoDB;
use FOS\CommentBundle\Document\Vote as BaseVote;
/**
 * @MongoDB\Document
 * @MongoDB\ChangeTrackingPolicy("DEFERRED_EXPLICIT")
 */
class Vote extends BaseVote
{
    /**
     * @MongoDB\Id
     */
    protected $id;
    /**
     * Comment of this vote
     *
     * @var Comment
     * @MongoDB\ReferenceOne(targetDocument="MyProject\MyBundle\Document\Comment")
     */
    protected $comment;
}

And you should implement VotableCommentInterface in your Comment class and add a field to your mapping:

并且您需要在您的Comment类中实现 VotableCommentInterface 接口，并添加一个字段到您的映射中：

<?php
// src/MyProject/MyBundle/Document/Comment.php
namespace MyProject\MyBundle\Document;
use Doctrine\ODM\MongoDB\Mapping\Annotations as MongoDB;
use FOS\CommentBundle\Document\Comment as BaseComment;
use FOS\CommentBundle\Model\VotableCommentInterface;
/**
 * @MongoDB\Document
 * @MongoDB\ChangeTrackingPolicy("DEFERRED_EXPLICIT")
 */
class Comment extends BaseComment implements VotableCommentInterface
{
    // .. fields
    /**
     * @MongoDB\Int
     * @var int
     */
    protected $score = 0;
    /**
     * Sets the score of the comment.
     *
     * @param integer $score
     */
    public function setScore($score)
    {
        $this->score = $score;
    }
    /**
     * Returns the current score of the comment.
     *
     * @return integer
     */
    public function getScore()
    {
        return $this->score;
    }
    /**
     * Increments the comment score by the provided
     * value.
     *
     * @param integer value
     *
     * @return integer The new comment score
     */
    public function incrementScore($by = 1)
    {
        $this->score += $by;
    }

Configure your application（配置您的应用程序）

In YAML:

YAML格式：

# app/config/config.yml
fos_comment:
    db_driver: mongodb
    class:
        model:
            vote: MyProject\MyBundle\Document\Vote

Or if you prefer XML:

如果您偏好XML:

# app/config/config.xml
<fos_comment:config db-driver="mongodb">
    <fos_comment:class>
        <fos_comment:model
            vote="MyProject\MyBundle\Document\Vote"
        />
    </fos_comment:class>
</fos_comment:config>

Back to the main step（返回主步骤）

Step 12: Enable voting.