我无法按主题实体访问用户实体。
在模板树枝中，我使用dump来显示结果查询...：
{% for forum in listForums %}
{{ dump (forum.topics.last)}}
....
我们可以看到User实体为空（null）：
Topic {#1456 ▼
-Forum: Forum {#435 ▶}
-Posts: PersistentCollection {#1457 ▶}
-id: 65
-title: "How to go over there"
-User: User {#1294 ▼
-_entityPersister: BasicEntityPersister {#1291 ▶}
-_identifier: array:1 [▶]
+__isInitialized__: false
-Topics: null
#id: null
-pseudo: null
-name: null
-firstname: null
-website: null
-avatar: null
-signature: null
-location: null
-registration: null
-lastVisit: null
-rank: null
-nbPost: null
-nbTopic: null
#username: null
#usernameCanonical: null
#email: null
#emailCanonical: null
#enabled: null
#salt: null
#password: null
#plainPassword: null
#lastLogin: null
#confirmationToken: null
#passwordRequestedAt: null
#groups: null
#locked: null
#expired: null
#expiresAt: null
#roles: null
#credentialsExpired: null
#credentialsExpireAt: null
}
-viewCount: 23
-dateCreation: DateTime {#1455 ▶}
-replyCount: 123
-slug: "slug_sluggg"
-genre: "genre"
-lastPost: 25
-content: """
<p>test</p>\r\n
\r\n
<p>test2</p>\r\n
\r\n
<p>test3</p>
"""
}
控制器的一部分
class FController extends Controller
{
public function indexAction()
{
$em = $this->getDoctrine()->getManager();
$user = $this->getUser();
$listForums = $em->getRepository('BISSAPForumBundle:Forum')->findAllOrderByCategory();
return $this->render('BISSAPForumBundle:F:index-forum.html.twig', array('listForums' => $listForums, 'user' => $user));
}
}
Topic.php
<?php
namespace BISSAP\ForumBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
/*use BISSAP\BodyConcept\Entity\Forum;
*/
/**
* Topic
*
* @ORM\Table()
* @ORM\Entity(repositoryClass="BISSAP\ForumBundle\Entity\TopicRepository")
*/
class Topic
{
/**
* @ORM\ManyToOne(targetEntity="Forum", inversedBy="Topics", cascade={"persist"})
* @ORM\JoinColumn(name="forum_id", referencedColumnName="id")
*/
private $Forum;
/**
* @var ArrayCollection $Posts
*
* @ORM\OneToMany(targetEntity="Post", mappedBy="Topic", cascade={"persist", "remove", "merge"})
*/
private $Posts;
/**
* @var integer
*
* @ORM\Column(name="id", type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @var string
*
* @ORM\Column(name="title", type="string", length=255)
*/
private $title;
/**
* @ORM\ManyToOne(targetEntity="BISSAP\UserBundle\Entity\User", inversedBy="Topics", cascade={"persist"})
* @ORM\JoinColumn(name="user_id", referencedColumnName="id")
*/
private $User;
/**
* @var integer
*
* @ORM\Column(name="view_count", type="integer")
*/
private $viewCount;
/**
* @var \DateTime
*
* @ORM\Column(name="date_creation", type="datetime")
*/
private $dateCreation;
/**
* @var integer
*
* @ORM\Column(name="reply_count", type="integer")
*/
private $replyCount;
/**
* @var string
*
* @ORM\Column(name="slug", type="string", length=255)
*/
private $slug;
/**
* @var string
*
* @ORM\Column(name="genre", type="string", length=255)
*/
private $genre;
/**
* @var integer
*
* @ORM\Column(name="last_post", type="integer")
*/
private $lastPost;
/**
* @var string
*
* @ORM\Column(name="content", type="text")
*/
private $content;
/**
* Get id
*
* @return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set title
*
* @param string $title
* @return Topic
*/
public function setTitle($title)
{
$this->title = $title;
return $this;
}
/**
* Get title
*
* @return string
*/
public function getTitle()
{
return $this->title;
}
/**
* Set user
*
* @param integer $user
* @return Topic
*/
public function setUser($user)
{
$this->user = $user;
return $this;
}
/**
* Get user
*
* @return integer
*/
public function getUser()
{
return $this->user;
}
/**
* Set viewCount
*
* @param integer $viewCount
* @return Topic
*/
public function setViewCount($viewCount)
{
$this->viewCount = $viewCount;
return $this;
}
/**
* Get viewCount
*
* @return integer
*/
public function getViewCount()
{
return $this->viewCount;
}
/**
* Set dateCreation
*
* @param \DateTime $dateCreation
* @return Topic
*/
public function setDateCreation($dateCreation)
{
$this->dateCreation = $dateCreation;
return $this;
}
/**
* Get dateCreation
*
* @return \DateTime
*/
public function getDateCreation()
{
return $this->dateCreation;
}
/**
* Set replyCount
*
* @param integer $replyCount
* @return Topic
*/
public function setReplyCount($replyCount)
{
$this->replyCount = $replyCount;
return $this;
}
/**
* Get replyCount
*
* @return integer
*/
public function getReplyCount()
{
return $this->replyCount;
}
/**
* Set slug
*
* @param string $slug
* @return Topic
*/
public function setSlug($slug)
{
$this->slug = $slug;
return $this;
}
/**
* Get slug
*
* @return string
*/
public function getSlug()
{
return $this->slug;
}
/**
* Set genre
*
* @param string $genre
* @return Topic
*/
public function setGenre($genre)
{
$this->genre = $genre;
return $this;
}
/**
* Get genre
*
* @return string
*/
public function getGenre()
{
return $this->genre;
}
/**
* Set lastPost
*
* @param integer $lastPost
* @return Topic
*/
public function setLastPost($lastPost)
{
$this->lastPost = $lastPost;
return $this;
}
/**
* Get lastPost
*
* @return integer
*/
public function getLastPost()
{
return $this->lastPost;
}
/**
* Set content
*
* @param string $content
* @return Topic
*/
public function setContent($content)
{
$this->content = $content;
return $this;
}
/**
* Get content
*
* @return string
*/
public function getContent()
{
return $this->content;
}
/**
* Set forum
*
* @param Forum $forum
* @return Topic
*/
/*public function setForum(\BISSAP\BodyConceptBundle\Entity\Forum $forum)*/
public function setForum(Forum $forum)
{
$this->forum = $forum;
return $this;
}
/**
* Get forum
*
* @return \BISSAP\BodyConceptBundle\Entity\Forum
*/
public function getForum()
{
return $this->forum;
}
/**
* Constructor
*/
public function __construct()
{
$this->posts = new \Doctrine\Common\Collections\ArrayCollection();
$this->dateCreation = new \DateTime();
}
/**
* Add posts
*
* @param \BISSAP\ForumBundle\Entity\Post $posts
* @return Topic
*/
public function addPost(\BISSAP\ForumBundle\Entity\Post $posts)
{
$this->posts[] = $posts;
return $this;
}
/**
* Remove posts
*
* @param \BISSAP\ForumBundle\Entity\Post $posts
*/
public function removePost(\BISSAP\ForumBundle\Entity\Post $posts)
{
$this->posts->removeElement($posts);
}
/**
* Get posts
*
* @return \Doctrine\Common\Collections\Collection
*/
public function getPosts()
{
return $this->posts;
}
}
User.php
<?php
namespace BISSAP\UserBundle\Entity;
use FOS\UserBundle\Model\User as BaseUser;
use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Constraints as Assert;
/**
* BISSAP\UserBundle\Entity\User
*
* @ORM\Table()
* @ORM\Entity(repositoryClass="BISSAP\UserBundle\Entity\UserRepository")
*/
class User extends BaseUser
{
/**
* @var ArrayCollection $Topics
*
* @ORM\OneToMany(targetEntity="\BISSAP\ForumBundle\Entity\Topic", mappedBy="User", cascade={"persist", "remove", "merge"})
*/
private $Topics;
/**
* @var integer
*
* @ORM\Column(name="id", type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="AUTO")
*/
protected $id;
/**
* @var string
*
* @ORM\Column(name="pseudo", type="string", length=30, nullable=true)
*/
private $pseudo;
/**
* @ORM\Column(name="name", type="string", length=255)
*
* @Assert\NotBlank(message="Please enter your name.", groups={"Registration", "Profile"})
* @Assert\Length(
* min=3,
* max=255,
* minMessage="The name is too short.",
* maxMessage="The name is too long.",
* groups={"Registration", "Profile"}
* )
*/
private $name;
/**
* @ORM\Column(name="firstname", type="string", length=255)
*
* @Assert\NotBlank(message="Please enter your firstname.", groups={"Registration", "Profile"})
* @Assert\Length(
* min=3,
* max=255,
* minMessage="The name is too short.",
* maxMessage="The name is too long.",
* groups={"Registration", "Profile"}
* )
*/
private $firstname;
/**
* @var string
*
* @ORM\Column(name="website", type="string", length=100, nullable=true)
*/
private $website;
/**
* @var string
*
* @ORM\Column(name="avatar", type="string", length=100, nullable=true)
*/
private $avatar;
/**
* @var string
*
* @ORM\Column(name="signature", type="string", length=200, nullable=true)
*/
private $signature;
/**
* @var string
*
* @ORM\Column(name="location", type="string", length=100, nullable=true)
*/
private $location;
/**
* @var \DateTime
*
* @ORM\Column(name="registration", type="datetime")
*/
private $registration;
/**
* @var \DateTime
*
* @ORM\Column(name="last_visit", type="datetime")
*/
private $lastVisit;
/**
* @var integer
*
* @ORM\Column(name="rank", type="integer", nullable=true)
*/
private $rank;
/**
* @var integer
*
* @ORM\Column(name="nb_post", type="integer", nullable=true)
*/
private $nbPost;
/**
* @var integer
*
* @ORM\Column(name="nb_topic", type="integer", nullable=true)
*/
private $nbTopic;
/**
* Get id
*
* @return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set pseudo
*
* @param string $pseudo
* @return User
*/
public function setPseudo($pseudo)
{
$this->pseudo = $pseudo;
return $this;
}
/**
* Get pseudo
*
* @return string
*/
public function getPseudo()
{
return $this->pseudo;
}
/**
* Set password
*
* @param string $password
* @return User
*/
public function setPassword($password)
{
$this->password = $password;
return $this;
}
/**
* Get password
*
* @return string
*/
public function getPassword()
{
return $this->password;
}
/**
* Set email
*
* @param string $email
* @return User
*/
public function setEmail($email)
{
$this->email = $email;
return $this;
}
/**
* Get email
*
* @return string
*/
public function getEmail()
{
return $this->email;
}
/**
* Set website
*
* @param string $website
* @return User
*/
public function setWebsite($website)
{
$this->website = $website;
return $this;
}
/**
* Get website
*
* @return string
*/
public function getWebsite()
{
return $this->website;
}
/**
* Set avatar
*
* @param string $avatar
* @return User
*/
public function setAvatar($avatar)
{
$this->avatar = $avatar;
return $this;
}
/**
* Get avatar
*
* @return string
*/
public function getAvatar()
{
return $this->avatar;
}
/**
* Set signature
*
* @param string $signature
* @return User
*/
public function setSignature($signature)
{
$this->signature = $signature;
return $this;
}
/**
* Get signature
*
* @return string
*/
public function getSignature()
{
return $this->signature;
}
/**
* Set location
*
* @param string $location
* @return User
*/
public function setLocation($location)
{
$this->location = $location;
return $this;
}
/**
* Get location
*
* @return string
*/
public function getLocation()
{
return $this->location;
}
/**
* Set registration
*
* @param \DateTime $registration
* @return User
*/
public function setRegistration($registration)
{
$this->registration = $registration;
return $this;
}
/**
* Get registration
*
* @return \DateTime
*/
public function getRegistration()
{
return $this->registration;
}
/**
* Set lastVisit
*
* @param \DateTime $lastVisit
* @return User
*/
public function setLastVisit($lastVisit)
{
$this->lastVisit = $lastVisit;
return $this;
}
/**
* Get lastVisit
*
* @return \DateTime
*/
public function getLastVisit()
{
return $this->lastVisit;
}
/**
* Set rank
*
* @param integer $rank
* @return User
*/
public function setRank($rank)
{
$this->rank = $rank;
return $this;
}
/**
* Get rank
*
* @return integer
*/
public function getRank()
{
return $this->rank;
}
/**
* Set nbPost
*
* @param integer $nbPost
* @return User
*/
public function setNbPost($nbPost)
{
$this->nbPost = $nbPost;
return $this;
}
/**
* Get nbPost
*
* @return integer
*/
public function getNbPost()
{
return $this->nbPost;
}
/**
* Set nbTopic
*
* @param integer $nbTopic
* @return User
*/
public function setNbTopic($nbTopic)
{
$this->nbTopic = $nbTopic;
return $this;
}
/**
* Get nbTopic
*
* @return integer
*/
public function getNbTopic()
{
return $this->nbTopic;
}
/**
* Constructor
*/
public function __construct()
{
parent::__construct();
$this->Topics = new \Doctrine\Common\Collections\ArrayCollection();
$this->registration = new \DateTime();
$this->lastVisit = new \DateTime();
}
/**
* Add Topics
*
* @param \BISSAP\ForumBundle\Entity\Topic $topics
* @return User
*/
public function addTopic(\BISSAP\ForumBundle\Entity\Topic $topics)
{
$this->Topics[] = $topics;
return $this;
}
/**
* Remove Topics
*
* @param \BISSAP\ForumBundle\Entity\Topic $topics
*/
public function removeTopic(\BISSAP\ForumBundle\Entity\Topic $topics)
{
$this->Topics->removeElement($topics);
}
/**
* Get Topics
*
* @return \Doctrine\Common\Collections\Collection
*/
public function getTopics()
{
return $this->Topics;
}
/**
* Set name
*
* @param string $name
* @return User
*/
public function setName($name)
{
$this->name = $name;
return $this;
}
/**
* Get name
*
* @return string
*/
public function getName()
{
return $this->name;
}
/**
* Set firstname
*
* @param string $firstname
* @return User
*/
public function setFirstname($firstname)
{
$this->firstname = $firstname;
return $this;
}
/**
* Get firstname
*
* @return string
*/
public function getFirstname()
{
return $this->firstname;
}
}
我想看看Doctrine生成的请求，但我不知道显示它的方法。
所以我尝试使用{{ forum.topics.last.user.pseudo }}
我收到错误：
An exception has been thrown during the rendering of a template ("Notice: Undefined property: BISSAP\ForumBundle\Entity\Topic::$user") in BISSAPForumBundle:F:index-forum.html.twig at line 53.
我用$ user移动了$ User，我得到了：
Impossible to access an attribute ("user") on a boolean variable ("") in BISSAPForumBundle:F:index-forum.html.twig at line 53
UserRepository :: findAllOrderByCategory（）不存在，但
ForumRepository :: findAllOrderByCategory（）：
class ForumRepository extends EntityRepository
{
public function findAllOrderByCategory()
{
return $this->createQueryBuilder('p')
->leftJoin('p.Category','c')
->orderBy('c.ordre', 'desc')
->getQuery()
->getResult();
}
}
答案 0 :(得分：1)
默认情况下，Doctrine是延迟加载相关对象，除非已加载相关对象。访问相关对象（即回显Topic.user.pseudo）应该触发加载完整对象。 请参阅脚注：http://doctrine-orm.readthedocs.org/projects/doctrine-orm/en/latest/reference/dql-doctrine-query-language.html#joins
如果这不起作用，您是否可以在响应中添加错误消息的屏幕截图和UserRepository :: findAllOrderByCategory（）方法的内容？