Question

我有2个实体：提交和投票。

提交实体：

  /**
   * @ORM\OneToMany(targetEntity="AppBundle\Entity\Votes", mappedBy="submission",cascade={"persist", "remove" })
   * @ORM\JoinColumn(name="id", referencedColumnName="submission_id")
   */
  protected $vote;

  /**
   * @return mixed
   */
  public function getVote()
  {
    return $this->vote->toArray();
  }

  /**
   * @param Votes $vote
   * @return $this
   *
   */
  public function setVote(Votes $vote)
  {
    if (!$this->vote->contains($vote)) {
      $this->vote->add($vote);
    }
    return $this;
  }

投票实体：

  /**
   * @ORM\ManyToOne(targetEntity="AppBundle\Entity\Submission", inversedBy="id")
   * @ORM\JoinColumn(name="submission_id", referencedColumnName="id", nullable=true)
   */
  protected $submission;

  /**
   * @return mixed
   */
  public function getSubmission()
  {
    return $this->submission;
  }

  /**
   * @param mixed $submission
   */
  public function setSubmission($submission)
  {
    $this->submission = $submission;
  }

问题是，当我为之前选择的提交设置投票时：

$submission = $em->getRepository('AppBundle:Submission')->findOneById($submissionId);
$vote  = new Votes();
$vote->setId($submission->getId());
$vote->setFeedback($judgeComment);
$vote->setScore($judgeScore);
$vote->setSubmission($submissionId);
$submission->setVote($vote);
$em->persist($submission);
$em->flush();

Vote table

submission_id列总是为NULL - 我不确定我做错了什么。我想在这里存储提交ID，这是什么投票。

Answer 1

您不必在教条中设置ID，而是设置对象，因为它是ORM

$submission = $em->getRepository('AppBundle:Submission')->findOneById($submissionId);
$vote  = new Votes();
$vote->setId($submission->getId()); // <--- Are you sure that you need this? 
$vote->setFeedback($judgeComment);
$vote->setScore($judgeScore);
// $vote->setSubmission($submissionId); <--- ERROR!
$vote->setSubmission($submission) // <--- Check advice below
$submission->setVote($vote);
$em->persist($submission);
$em->flush();

如果我也可以在此处提出建议，请按以下步骤修改setVote

public function setVote(Votes $vote)
{
    if (!$this->vote->contains($vote)) {
      $this->vote->add($vote);
      $vote->setSubmission($this);
    }
    return $this;
  }

并且您永远不需要明确设置关联的双方

我还注意到您的班级名称是复数（应该是单数进入域名），而vote属性为submission是奇异的（应该是复数，因为它是一个集合;你有一个-to-Many注释。即使setter也应该是adder，因为你没有设置，只是添加一个Vote）

Answer 2

非常感谢格里。谢谢你，问题解决了。这是答案：

提交实体：

  /**
   * @ORM\OneToMany(targetEntity="AppBundle\Entity\Votes", mappedBy="submission",cascade={"persist", "remove" })
   * @ORM\JoinColumn(name="id", referencedColumnName="submission_id")
   */
  protected $vote;

  /**
   * @return mixed
   */
  public function getVote()
  {
    return $this->vote->toArray();
  }

  /**
   * @param Votes $vote
   * @return $this
   *
   */
  public function setVote(Votes $vote)
  {
    $this->vote[] = $vote;
    $vote->setSubmission($this);
    return $this;
  }

投票实体：

  /**
   * @ORM\ManyToOne(targetEntity="AppBundle\Entity\Submission", inversedBy="vote")
   * @ORM\JoinColumn(name="submission_id", referencedColumnName="id",onDelete="cascade", nullable=true)
   */
  protected $submission;

  /**
   * @return mixed
   */
  public function getSubmission()
  {
    return $this->submission;
  }

  /**
   * @param mixed $submission
   */
  public function setSubmission($submission)
  {
    $this->submission = $submission;
  }

现在，当我添加新的投票时，一切都很好：

$vote  = new Votes();
$vote->setFeedback($judgeComment);
$vote->setScore($judgeScore);
$submission->setVote($vote);
$em->persist($submission);
$em->flush();

result

Doctrine2一对多关系反面不保存拥有的边ID

2 个答案: