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Question

主義實體協會我已經配置稱爲用戶和ApiKey兩個實體。他們下面有一對一的關係映射。

用戶：

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

/** 
* @ORM\Column(name="username", type="string", length=225, unique=true) 
* @Assert\NotBlank(message="Please enter a username.") 
* @Assert\Length(
*  min = 2, 
*  max = 180, 
*  minMessage = "Your username must be at least {{ limit }} characters", 
*  maxMessage = "Your username cannot be longer than {{ limit }} characters" 
*) 
*/ 
protected $username; 

/** 
* @ORM\Column(name="email", type="string", length=225) 
* @Assert\NotBlank(message="Please enter a email.") 
* @Assert\Email(message = "The email '{{ value }}' is not a valid email.") 
*/ 
protected $email; 

/** 
* @ORM\Column(name="salt", type="text") 
*/ 
protected $salt; 

/** 
* @ORM\Column(name="password", type="string", length=225) 
* @Assert\NotBlank(message="Please enter a password.") 
* @Assert\Length(
*  min = 7, 
*  minMessage = "Your password must be at least {{ limit }} characters long." 
*) 
*/ 
protected $password; 

/** 
* @Assert\NotBlank(message="Please enter a confirmation password.") 
*/ 
protected $confirmationPassword; 

/** 
* @ORM\Column(name="roles", type="json_array") 
*/ 
protected $roles; 

/** 
* @ORM\OneToOne(targetEntity="ApiKey", mappedBy="user") 
* @ORM\JoinColumn(name="id", referencedColumnName="user_id") 
*/ 
protected $apiKey; 

ApiKey：

/** 
* @var integer 
* @ORM\Column(name="user_id", type="integer") 
* @ORM\Id 
*/ 
protected $user_id; 

/** 
* @var string 
* @ORM\Column(name="api_key", unique=true, type="string", length=225) 
* @Assert\NotBlank(message="Please enter a username.") 
*/ 
protected $api_key; 

/** 
* @var string 
* @ORM\Column(name="expires", type="datetime") 
* @Assert\NotBlank(message="Please enter a username.") 
*/ 
protected $expires; 

/** 
* @ORM\OneToOne(targetEntity="User", inversedBy="apiKey") 
* @ORM\JoinColumn(name="user_id", referencedColumnName="id") 
*/ 
protected $user; 

然而，當我運行下面的代碼：

$user = new User(); 
    $user->setUsername($request->get('username')); 
    $user->setSalt(uniqid(mt_rand(), true)); 
    $user->setPassword(hash('sha256', $user->getSalt() . $request->get('password'))); 
    $user->setRoles(['ROLE_API']); 

    $apiKey = new ApiKey(); 
    $apiKey->setUser($user); 

    $this->getDoctrine()->getManager()->persist($user); 
    $this->getDoctrine()->getManager()->flush(); 

我得到這個錯誤，我究竟做錯了什麼？

An exception occurred while executing 'INSERT INTO users (username, email, salt, password, roles, id) VALUES (?, ?, ?, ?, ?, ?)' with params ["bobsmith", "bob@live.com", "147423531058bd98d9ac9af4.48409486", "6196012972b1294e7f3fbf9c140bc26f0bf3b354ea37d00753bc1ecba0a72866", "[\"ROLE_API\"]", null]:SQLSTATE[23000]: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails (app . users , CONSTRAINT FK_1483A5E9BF396750 FOREIGN KEY (id) REFERENCES api_key (user_id))

變化：

$user = new User(); 
    $user->setUsername($request->get('username')); 
    $user->setSalt(uniqid(mt_rand(), true)); 
    $user->setPassword(hash('sha256', $user->getSalt() . $request->get('password'))); 
    $user->setRoles(['ROLE_API']); 

    $apiKey = new ApiKey(); 
    $this->getDoctrine()->getManager()->persist($apiKey); 
    $apiKey->setUser($user); 

    $this->getDoctrine()->getManager()->persist($user); 
    $this->getDoctrine()->getManager()->flush(); 

Entity of type AppBundle\Entity\ApiKey is missing an assigned ID for field 'user_id'. The identifier generation strategy for this entity requires the ID field to be populated before EntityManager#persist() is called. If you want automatically generated identifiers instead you need to adjust the metadata mapping accordingly.

Answer 1

這是2倍的評論，WH在西里爾說，但它也因爲你有你的用戶類的額外映射：

/** 
* @ORM\OneToOne(targetEntity="ApiKey", mappedBy="user") 
* @ORM\JoinColumn(name="id", referencedColumnName="user_id") // Remove this line 
*/ 
protected $apiKey; 

應該僅僅是：

/** 
* @ORM\OneToOne(targetEntity="ApiKey", mappedBy="user") 
*/ 
protected $apiKey; 

只有實際做的映射關係的映射需要連接列。通過使用mappedBy="user"你告訴學說看ApiKey類user屬性如何映射這種關聯。在這裏有一個連接列是導致問題。

Answer 2

你似乎在這裏有一個級聯問題。您正在將用戶保存在數據庫中，但該用戶已鏈接到尚未保存在數據庫中的ApiKey。要告訴它需要堅持它的ApiKey與它一起，你需要添加一個梯級上的用戶和ApiKey

/** 
* @ORM\OneToOne(targetEntity="ApiKey", mappedBy="user", cascade="persist") 
*/ 
protected $api_key; 

之間依然存在。如果你也想刪除ApiKey隨着用戶就可以使用cascade={"persist", "remove"} 玩家你可以找到所有關於協會here學說文檔

編輯：刪除行// @ORM\JoinColumn(name="id", referencedColumnName="user_id")，不應該對業主方存在，如Chausser