Symfony2 Doctrine2 多对多形式不保存实体

问题描述

我在处理多对多关系时遇到了一些麻烦.我有 Users 和 Assets.我希望能够将用户分配到资产页面上的资产.

I am having some trouble with a many to many relationship. I have Users and Assets. I would like to be able to assign users to an asset on the asset page.

下面的代码在创建/编辑资产时显示用户列表，但是对用户复选框所做的更改不会保存，而其余数据会保留.

The code below displays a list of users when creating/editing an asset, however changes made to the user checkboxes do not save, while the rest of the data is persisted.

如果我通过 mysql 客户端向 users_assets 添加一个条目，这些更改会显示在资产列表中.

If I add an entry to users_assets through the mysql client, these changes are shown in the asset list.

用户

class User extends BaseUser
{
    /**
     * @ORMManyToMany(targetEntity="Asset", inversedBy="users")
     */
    private $assets;
}

资产

class Asset
{
    /**
     * @ORMManyToMany(targetEntity="User", mappedBy="assets")
     */
    private $users;
}

资产类型

public function buildForm(FormBuilderInterface $builder, array $options)
{
    $form = $builder
        ->add('users', null, array(
            'expanded' => true,
            'multiple' => true
        ))
        ->getForm();

    return $form;
}

推荐答案

出于某种原因，我不得不切换学说映射以使其正常工作:

For some reason I had to switch the doctrine mappings to get this to work:

Asset:
 /**
 * @ORMManyToMany(targetEntity="AdaptiveUserBundleEntityUser", inversedBy="assets")
 * @ORMJoinTable(name="user_assets")
 */
private $users;

User:
 /**
 * @ORMManyToMany(targetEntity="SplashSiteBundleEntityAsset", mappedBy="users")
 */
private $assets;

现在，当我保存资产时，它会保存关联的用户.我不需要将 builder->add 定义为实体或集合.我只是将它传递给 null，它使用映射信息来填充实体信息:

Now when I save the asset it saves the users associated. I did not need to define builder->add as an entity or collection. I simply pass it null and it uses the mapping info to fill in the entity info:

AssetType:
->add('users', null, array('expanded' => "true", "multiple" => "true"))

不完全确定为什么我需要在 Asset vs The User 上拥有 inversedBy 和 JoinTable 信息，但它现在似乎可以工作了！

Not exactly sure why I needed to have the inversedBy and JoinTable info on the Asset vs The User but it seems to be working now!

感谢您的建议！！！

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