避免懒惰加载教条Symfony2 [英] Avoid lazy loading Doctrine Symfony2

问题描述

我的项目中有两个实体：用户和头像。

用户拥有具有OneToOne关系的头像。

头像是具有文件对象和fileName的实体。它使用@ ORM\HasLifecycleCallbacks保存文件或按照 Symfony2文档。

在我的控制器中，我想从当前用户中删除阿凡达实体（我使用 $ currentUser = $ this-> get（'security.context'） - > getToken（） - > getUser（）），但是我不能使用 $ currentUser-> getAvatar（）：

  var_dump（$ currentUser-> ; getAvatar（））;出口; 
  

输出：

 code> object（Proxies\__CG__\Participso\UserBundle\Entity\Avatar）$ 355 
 public'__initializer__'=> 
 object（Closure）$ 348 $ b public'__cloner__'=> 
 object（Closure）[349] 
 public'__isInitialized__'=> boolean false 
 private'id'（Participso\UserBundle\Entity\Avatar）=> int 20 
 public'file'=> null 
 private'fileName'（Participso\UserBundle\Entity\Avatar）=> null 
  

但如果我这样做

  $ whatever = $ currentUser-> getAvatar（） - > getFileName（）; 
 var_dump（$ currentUser-> getAvatar（））; exit; 
  

输出：

 code> object（Proxies\__CG__\Participso\UserBundle\Entity\Avatar）$ 355 
 public'__initializer__'=> 
 object（Closure）$ 348 $ b public'__cloner__'=> 
 object（Closure）[349] 
 public'__isInitialized__'=> boolean false 
 private'id'（Participso\UserBundle\Entity\Avatar）=> int 20 
 public'file'=> null 
 private'fileName'（Participso\UserBundle\Entity\Avatar）=>字符串'd4e5eadd3757498a22b14ad1f81869c2baf459d3.png'
  

这是很讨厌...有人有一个线索来避免这个

解决方案

如 Doctrine docs ，你只需要指定提取行为就是渴望。

  / ** 
 * @OneToOne（targetEntity =User）
 * @JoinColumn（name =user_id，referencedColumnName =id，fetch =EAGER）
 * / 
  

YAML或其他配置示例。

I have two entities in my project : User and Avatar.

User owns Avatar with a OneToOne relation.

Avatar is an entity with a file object and a fileName. It uses @ORM\HasLifecycleCallbacks to save the file or to remove it as described in the Symfony2 documentation.

In my controller, I want to remove the Avatar entity from the current user (i use $currentUser = $this->get('security.context')->getToken()->getUser()), but I can't get the avatar with $currentUser->getAvatar() :

var_dump($currentUser->getAvatar());exit;

Output :

object(Proxies\__CG__\Participso\UserBundle\Entity\Avatar)[355]
    public '__initializer__' =>
object(Closure)[348]
    public '__cloner__' =>
object(Closure)[349]
    public '__isInitialized__' => boolean false
    private 'id' (Participso\UserBundle\Entity\Avatar) => int 20
    public 'file' => null
    private 'fileName' (Participso\UserBundle\Entity\Avatar) => null

But if i do

$whatever = $currentUser->getAvatar()->getFileName();
var_dump($currentUser->getAvatar());exit;

Output :

object(Proxies\__CG__\Participso\UserBundle\Entity\Avatar)[355]
    public '__initializer__' =>
object(Closure)[348]
    public '__cloner__' =>
object(Closure)[349]
    public '__isInitialized__' => boolean false
    private 'id' (Participso\UserBundle\Entity\Avatar) => int 20
    public 'file' => null
    private 'fileName' (Participso\UserBundle\Entity\Avatar) => string 'd4e5eadd3757498a22b14ad1f81869c2baf459d3.png'

This is pretty annoying... Does somebody have a clue to avoid this ?

解决方案

As described in the Doctrine docs, you just need to specify the fetching behavior to be eager.

/**
 * @OneToOne(targetEntity="User")
 * @JoinColumn(name="user_id", referencedColumnName="id", fetch="EAGER")
 */

See the documentation for YAML or other configuration examples.

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