学说不在教条上创建一对多的关系：纲要：更新

Question

我有两个实体User和Shout在各自的类中使用注释。 User可以有许多shouts。出于某种原因，当我创建注释，然后运行bin/console doctrine:schema:update --dump-sql它不显示关系，并且当我运行实际更新时，它创建表，但不创建关系。下面是类：

/** 
* Shout 
* 
* @ORM\Table(name="shouts") 
* @ORM\Entity(repositoryClass="AppBundle\Repository\ShoutRepository") 
* @package AppBundle\Entity 
*/ 
class Shout 
{ 
    /** 
    * @var int 
    * 
    * @ORM\Column(name="id", type="integer") 
    * @ORM\Id 
    * @ORM\GeneratedValue(strategy="AUTO") 
    */ 
    private $id; 

    /** 
    * @var int 
    * 
    * @ORM\Column(name="user_id", type="integer", nullable=false) 
    * @ORM\ManyToOne(targetEntity="User", inversedBy="shouts") 
    * @ORM\JoinColumn(name="user_id", referencedColumnName="id") 
    */ 
    private $user; 

    /** 
    * @var string 
    * 
    * @ORM\Column(name="message", type="text") 
    */ 
    private $message; 
...... 

/** 
* User 
* 
* @ORM\Table(name="users") 
* @ORM\Entity(repositoryClass="AppBundle\Repository\UserRepository") 
* @package AppBundle\Entity 
*/ 
class User extends BaseUser 
{ 

    /** 
    * @var int 
    * 
    * @ORM\Column(name="id", type="integer") 
    * @ORM\Id 
    * @ORM\GeneratedValue(strategy="AUTO") 
    */ 
    protected $id; 

    /** 
    * @var ArrayCollection 
    * @ORM\OneToMany(targetEntity="Shout", mappedBy="users") 
    */ 
    private $shouts; 

    /** 
    * User constructor. 
    */ 
    public function __construct() 
    { 
     $this->shouts = new ArrayCollection(); 
     parent::__construct(); 
    } 

...和bin/console doctrine:schema:update --dump-sql

CREATE TABLE shouts (id INT AUTO_INCREMENT NOT NULL, user_id INT NOT NULL, message LONGTEXT NOT NULL, PRIMARY KEY(id)) DEFAULT CHARACTER SET utf8 COLLATE utf8_unicode_ci ENGINE = InnoDB; 
CREATE TABLE users (id INT AUTO_INCREMENT NOT NULL, username VARCHAR(255) NOT NULL, username_canonical VARCHAR(255) NOT NULL, email VARCHAR(255) NOT NULL, email_canonical VARCHAR(255) NOT NULL, enabled TINYINT(1) NOT NULL, salt VARCHAR(255) NOT NULL, password VARCHAR(255) NOT NULL, last_login DATETIME DEFAULT NULL, locked TINYINT(1) NOT NULL, expired TINYINT(1) NOT NULL, expires_at DATETIME DEFAULT NULL, confirmation_token VARCHAR(255) DEFAULT NULL, password_requested_at DATETIME DEFAULT NULL, roles LONGTEXT NOT NULL COMMENT '(DC2Type:array)', credentials_expired TINYINT(1) NOT NULL, credentials_expire_at DATETIME DEFAULT NULL, UNIQUE INDEX UNIQ_1483A5E992FC23A8 (username_canonical), UNIQUE INDEX UNIQ_1483A5E9A0D96FBF (email_canonical), PRIMARY KEY(id)) DEFAULT CHARACTER SET utf8 COLLATE utf8_unicode_ci ENGINE = InnoDB; 

Answer 1

您使用是错误的注释，你应该Column或ManyToOne但不能同时使用。

class Shout 
{ 
    // ... 

    /** 
    * @var User 
    * 
    * @ORM\ManyToOne(targetEntity="User", inversedBy="shouts") 
    */ 
    private $user; 

    // ... 
} 

class User extends BaseUser 
{ 

    // ... 

    /** 
    * @var ArrayCollection|Shout[] 
    * 
    * @ORM\OneToMany(targetEntity="Shout", mappedBy="user") 
    */ 
    private $shouts; 

    // ... 
} 

注意：

的@ORM\JoinColumn(name="user_id", referencedColumnName="id")线是一种无用的学说足够的智慧找出列名，这些都是默认值。您应该考虑关系是否可选，并使用@ORM\JoinColumn(onDelete="SET NULL", nullable=true)或@ORM\JoinColumn(onDelete="CASCADE", nullable=false)。