Symfony 3在没有关联的情况下保存实体中的表单数据

Question

在我的博客表单中，我有一个包含作者的字段：

<?php
$this->add(
    'user',
    EntityType::class,
    [
        'label'       => 'Author',
        'class'       => 'HitsoBundleCommonBundleEntityUser',
        'placeholder' => 'Select post author',
        'mapped'      => false,
        'empty_data'  => null,
    ]
)

但在我的博客实体中，我没有用户与用户表的关联，我在其他表中有这个-"blogs_users"：

<?php
/**
 * Blog
 *
 * @ORMTable(name="blogs")
 * @ORMEntity(repositoryClass="RepositoryBlogRepository")
 * @codeCoverageIgnore
 */
class Blog
{
    /**
     * @ORMId
     * @ORMGeneratedValue(strategy="AUTO")
     * @ORMColumn(type="integer", length=10, options={"unsigned"=true})
     */
    private $id;
    /**
     * @ORMColumn(type="string", length=255)
     */
    private $title;
    /**
     * @ORMColumn(type="string", length=255)
     * @GedmoSlug(fields={"title"})
     */
    private $slug;
  }

我的BlogUser实体类：

<?php
/**
 * BlogUsers
 *
 * @ORMTable(name="blogs_users")
 * @ORMEntity(repositoryClass="BlogBundleRepositoryBlogUserRepository")
 * @codeCoverageIgnore
 */
class BlogUser implements SiteIdAwareInterface
{
    /**
     * @ORMId
     * @ORMManyToOne(targetEntity="BlogBundleEntityBlog")
     * @ORMJoinColumn(onDelete="CASCADE")
     * @var HitsoBundleBlogBundleEntityBlog
     */
    private $blog;
    /**
     * @ORMId
     * @ORMManyToOne(targetEntity="BlogBundleEntityUser")
     * @ORMJoinColumn(name="user_id", referencedColumnName="id", onDelete="CASCADE", nullable=false)
     * @var CommonBundleEntityUser
     */
    private $user; 
}

和我的博客控制器：：newAction:

<?php
public function newAction(Request $request)
{
    $blog = new Blog();
    $form = $this->createForm(
        BlogType::class,
        $blog
    );
    $form->handleRequest($request);
    if ($form->isSubmitted() && $form->isValid()) {
        $em = $this->getDoctrine()->getManager();
        $blogUser = new BlogUser();
        $em->persist($blogUser);
        $em->persist($blog);
        $em->flush();
        return $this->redirectToRoute('...');
    }

但现在我提交的表格我有以下错误：

属性用户不存在于BlogBundle\Entity\Blog类中

救命！

Answer 1

我认为你需要在博客用户的用户属性上做正确的targetEntity注释

 /**
 * @ORMId
 * @ORMManyToOne(targetEntity="CommonBundleEntityUser")
 * @ORMJoinColumn(name="user_id", referencedColumnName="id", onDelete="CASCADE", nullable=false)
 * @var CommonBundleEntityUser
 */
private $user;