我迷失在一种复杂的关系中（对我而言）。我有一个实体客户端的实体项目，您可以将用户附加到项目中。当我尝试添加没有用户的项目时，没有问题。但是，当我尝试添加项目并且用户Sf2显示此错误时：
Intranet \ IntranetBundle \ Entity \ ProjectUser类型的实体缺少字段“project”的已分配ID。此实体的标识符生成策略要求在调用EntityManager＃persist（）之前填充ID字段。如果您想要自动生成标识符，则需要相应地调整元数据映射。
我知道它很生气，因为project_id是 null 。但我不知道为什么它是空的。
我的Project.php
namespace Intranet\IntranetBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use Gedmo\Mapping\Annotation as Gedmo;
use Symfony\Component\Validator\Constraints as Assert;
/**
* Project
*
* @ORM\Table()
* @ORM\Entity(repositoryClass="Intranet\IntranetBundle\Entity\ProjectRepository")
*/
class Project
{
/**
* @var integer
*
* @ORM\Column(name="id", type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @var string
*
* @ORM\Column(name="name", type="string", length=255)
* @Assert\NotBlank(
* message = "The field cannot be empty"
* )
*/
private $name;
/**
* @Gedmo\Slug(fields={"name"})
* @ORM\Column(length=255, unique=true)
*/
private $slug;
/**
* @var string
*
* @ORM\Column(name="contact_client", type="text", nullable=true)
*/
private $contactClient;
/**
* @var string
*
* @ORM\Column(name="technologies", type="string", length=255, nullable=true)
*/
private $technologies;
/**
* @var string
*
* @ORM\Column(name="languages", type="string", length=255, nullable=true)
*/
private $languages;
/**
* @var string
*
* @ORM\Column(name="extern", type="text", nullable=true)
*/
private $extern;
/**
* @var string
*
* @ORM\Column(name="url_prod", type="string", length=255, nullable=true)
*/
private $urlProd;
/**
* @var string
*
* @ORM\Column(name="url_staging", type="text", nullable=true)
*/
private $urlStaging;
/**
* @var string
*
* @ORM\Column(name="url_dev", type="text", nullable=true)
*/
private $urlDev;
/**
* @var string
*
* @ORM\Column(name="hosting_company", type="string", length=255, nullable=true)
*/
private $hostingCompany;
/**
* @var string
*
* @ORM\Column(name="hosting_type", type="string", length=255, nullable=true)
*/
private $hostingType;
/**
* @var string
*
* @ORM\Column(name="hosting_manager", type="text", nullable=true)
*/
private $hostingManager;
/**
* @var string
*
* @ORM\Column(name="ssh", type="text", nullable=true)
*/
private $ssh;
/**
* @var string
*
* @ORM\Column(name="ftp", type="text", nullable=true)
*/
private $ftp;
/**
* @var string
*
* @ORM\Column(name="db", type="text", nullable=true)
*/
private $db;
/**
* @var string
*
* @ORM\Column(name="emails", type="text", nullable=true)
*/
private $emails;
/**
* @var string
*
* @ORM\Column(name="cms", type="text", nullable=true)
*/
private $cms;
/**
* @var string
*
* @ORM\Column(name="web_services", type="text", nullable=true)
*/
private $webServices;
/**
* @var string
*
* @ORM\Column(name="comment", type="text", nullable=true)
*/
private $comment;
/**
* @ORM\ManyToOne(targetEntity="Intranet\IntranetBundle\Entity\Client", inversedBy="projects")
* @ORM\JoinColumn(nullable=false)
*/
private $client;
/**
* @ORM\OneToMany(targetEntity="Intranet\IntranetBundle\Entity\ProjectUser", mappedBy="project", cascade={"persist"})
*/
private $projectUsers;
public function __construct()
{
$this->projectUsers = new \Doctrine\Common\Collections\ArrayCollection();
}
/**
* Get id
*
* @return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set name
*
* @param string $name
* @return Project
*/
public function setName($name)
{
$this->name = $name;
return $this;
}
/**
* Get name
*
* @return string
*/
public function getName()
{
return $this->name;
}
/**
* Set slug
*
* @param string $slug
* @return Client
*/
public function setSlug($slug)
{
$this->slug = $slug;
return $this;
}
/**
* Get slug
*
* @return string
*/
public function getSlug()
{
return $this->slug;
}
/**
* Set contactClient
*
* @param string $contactClient
* @return Project
*/
public function setContactClient($contactClient)
{
$this->contactClient = $contactClient;
return $this;
}
/**
* Get contactClient
*
* @return string
*/
public function getContactClient()
{
return $this->contactClient;
}
/**
* Set technologies
*
* @param string $technologies
* @return Project
*/
public function setTechnologies($technologies)
{
$this->technologies = $technologies;
return $this;
}
/**
* Get technologies
*
* @return string
*/
public function getTechnologies()
{
return $this->technologies;
}
/**
* Set languages
*
* @param string $languages
* @return Project
*/
public function setLanguages($languages)
{
$this->languages = $languages;
return $this;
}
/**
* Get languages
*
* @return string
*/
public function getLanguages()
{
return $this->languages;
}
/**
* Set extern
*
* @param string $extern
* @return Project
*/
public function setExtern($extern)
{
$this->extern = $extern;
return $this;
}
/**
* Get extern
*
* @return string
*/
public function getExtern()
{
return $this->extern;
}
/**
* Set urlProd
*
* @param string $urlProd
* @return Project
*/
public function setUrlProd($urlProd)
{
$this->urlProd = $urlProd;
return $this;
}
/**
* Get urlProd
*
* @return string
*/
public function getUrlProd()
{
return $this->urlProd;
}
/**
* Set urlStaging
*
* @param string $urlStaging
* @return Project
*/
public function setUrlStaging($urlStaging)
{
$this->urlStaging = $urlStaging;
return $this;
}
/**
* Get urlStaging
*
* @return string
*/
public function getUrlStaging()
{
return $this->urlStaging;
}
/**
* Set urlDev
*
* @param string $urlDev
* @return Project
*/
public function setUrlDev($urlDev)
{
$this->urlDev = $urlDev;
return $this;
}
/**
* Get urlDev
*
* @return string
*/
public function getUrlDev()
{
return $this->urlDev;
}
/**
* Set hostingCompany
*
* @param string $hostingCompany
* @return Project
*/
public function setHostingCompany($hostingCompany)
{
$this->hostingCompany = $hostingCompany;
return $this;
}
/**
* Get hostingCompany
*
* @return string
*/
public function getHostingCompany()
{
return $this->hostingCompany;
}
/**
* Set hostingType
*
* @param string $hostingType
* @return Project
*/
public function setHostingType($hostingType)
{
$this->hostingType = $hostingType;
return $this;
}
/**
* Get hostingType
*
* @return string
*/
public function getHostingType()
{
return $this->hostingType;
}
/**
* Set hostingManager
*
* @param string $hostingManager
* @return Project
*/
public function setHostingManager($hostingManager)
{
$this->hostingManager = $hostingManager;
return $this;
}
/**
* Get hostingManager
*
* @return string
*/
public function getHostingManager()
{
return $this->hostingManager;
}
/**
* Set ssh
*
* @param string $ssh
* @return Project
*/
public function setSsh($ssh)
{
$this->ssh = $ssh;
return $this;
}
/**
* Get ssh
*
* @return string
*/
public function getSsh()
{
return $this->ssh;
}
/**
* Set ftp
*
* @param string $ftp
* @return Project
*/
public function setFtp($ftp)
{
$this->ftp = $ftp;
return $this;
}
/**
* Get ftp
*
* @return string
*/
public function getFtp()
{
return $this->ftp;
}
/**
* Set db
*
* @param string $db
* @return Project
*/
public function setDb($db)
{
$this->db = $db;
return $this;
}
/**
* Get db
*
* @return string
*/
public function getDb()
{
return $this->db;
}
/**
* Set emails
*
* @param string $emails
* @return Project
*/
public function setEmails($emails)
{
$this->emails = $emails;
return $this;
}
/**
* Get emails
*
* @return string
*/
public function getEmails()
{
return $this->emails;
}
/**
* Set cms
*
* @param string $cms
* @return Project
*/
public function setCms($cms)
{
$this->cms = $cms;
return $this;
}
/**
* Get cms
*
* @return string
*/
public function getCms()
{
return $this->cms;
}
/**
* Set webServices
*
* @param string $webServices
* @return Project
*/
public function setWebServices($webServices)
{
$this->webServices = $webServices;
return $this;
}
/**
* Get webServices
*
* @return string
*/
public function getWebServices()
{
return $this->webServices;
}
/**
* Set comment
*
* @param string $comment
* @return Project
*/
public function setComment($comment)
{
$this->comment = $comment;
return $this;
}
/**
* Get comment
*
* @return string
*/
public function getComment()
{
return $this->comment;
}
/**
* Set client
*
* @param \Intranet\IntranetBundle\Entity\Client $client
* @return Project
*/
public function setClient(\Intranet\IntranetBundle\Entity\Client $client)
{
$this->client = $client;
return $this;
}
/**
* Get client
*
* @return \Intranet\IntranetBundle\Entity\Client
*/
public function getClient()
{
return $this->client;
}
public function addProjectUser(\Intranet\IntranetBundle\Entity\ProjectUser $projectUser)
{
$this->projectUsers[] = $projectUser;
}
public function removeProjectUser(\Intranet\IntranetBundle\Entity\ProjectUser $projectUser)
{
$this->projectUsers->removeElement($projectUser);
}
public function getProjectUsers()
{
return $this->projectUsers;
}
}
我的ProjectUser.php
namespace Intranet\IntranetBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
/**
* @ORM\Entity
*/
class ProjectUser
{
/**
* @ORM\Id
* @ORM\ManyToOne(targetEntity="Intranet\IntranetBundle\Entity\Project", inversedBy="projectUsers")
*/
private $project;
/**
* @ORM\Id
* @ORM\ManyToOne(targetEntity="Intranet\UserBundle\Entity\User")
*/
private $user;
/**
* @ORM\Column(name="profil", type="smallint")
*/
private $profil;
public function setProject(\Intranet\IntranetBundle\Entity\Project $project)
{
$project->addProjectUser($this);
$this->project = $project;
}
public function getProject()
{
return $this->project;
}
public function setUser(\Intranet\UserBundle\Entity\User $user)
{
$this->user = $user;
}
public function getUser()
{
return $this->user;
}
public function setProfil($profil)
{
$this->profil = $profil;
}
public function getProfil()
{
return $this->profil;
}
}
profil =用户工作的smallint（1 =经理，2 =设计师，......）
我的ProjectController（addAction）
public function addAction()
{
$project = new Project;
$form = $this->createForm(new ProjectType, $project);
$request = $this->get('request');
if ($request->getMethod() == 'POST') {
$form->bind($request);
if ($form->isValid()) {
$em = $this->getDoctrine()->getManager();
$em->persist($project);
$em->flush();
foreach ($form->get('projectUsers')->getData() as $u) {
$u->setProject($project);
$em->persist($u);
}
$em->flush();
$this->get('session')->getFlashBag()->add('success', 'The project : '. $project->getName() .' has been added');
return $this->redirect($this->generateUrl('clients_list'));
}
}
return $this->render('IntranetIntranetBundle:Project:add_project.html.twig', array(
'form' => $form->createView()
));
}
感谢您的帮助
答案 0 :(得分：1)
首先，您不应在@ORM\Id实体中的每个外键上指定ProjectUser注释 - 它适用于主键。
然后你应该在外键字段上声明列连接：
/**
* @ORM\ManyToOne(targetEntity="Intranet\IntranetBundle\Entity\Project", inversedBy="projectUsers")
* @ORM\JoinColumn(name="project_id", referencedColumnName="id")
*/
private $project;
/**
* @ORM\ManyToOne(targetEntity="Intranet\IntranetBundle\Entity\User", inversedBy="projects")
* @ORM\JoinColumn(name="user_id", referencedColumnName="id")
*/
private $user;
您还应该有一个像
这样的字段class User
{
// ...
/**
* @ORM\OneToMany(targetEntity="Intranet\IntranetBundle\Entity\ProjectUser", mappedBy="user")
*/
private $projects;
// ...
}
最后，要将用户添加到项目中，我建议您将ProjectUserType表单与用户选择嵌入到ProjectType表单中。在你的控制器中，你可以有像
public function addAction()
{
$project = new Project;
$projectUser = new ProjectUser();
$projectUser->setProject($project);
$project->addProjectUser($projectUser);
$form = $this->createForm(new ProjectType, $project);
// ...
表格ProjectUserType
class ProjectUserType extends AbstractType {
public function buildForm(FormBuilderInterface $builder, array $options) {
$builder->add('user', 'entity', array(
'class' => 'Intranet:IntranetBundle:User'
));
// ...
希望这有助于至少一点点。
答案 1 :(得分：0)
编码时：$em->persist($project);
$project等于$project = new Project;（你不忘记'()'吗？）
实际上$projet是空的......为此，我想你忘了编码：
$project = $form->getData();