学说删除拥有方多对多关系

Question

我在 Symfony 3 中的 2 个实体之间有这种关系：

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

    /**
    * @var ArrayCollection
    *
    * @ORM\ManyToMany(targetEntity="Neighborhood", inversedBy="projects")
    * @ORM\JoinTable(name="neighborhood_project")
    */
    private $neighborhoods;

    public function __construct() {
        $this->neighborhoods = new ArrayCollection;
    }

    public function getNeighborhoods()
    {...}

    public function setNeighborhoods(array $entities)
    {...}

    public function addNeighborhood(Neighborhood $entity)
    {...}

    public function removeNeighborhood(Neighborhood $entity)
    {...}
}

class Neighborhood
{
    /**
     * @var int
     *
     * @ORM\Id
     * @ORM\Column(name="id", type="integer", nullable=false, unique=true)
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    public $id;

    /**
     * @var ArrayCollection
     *
     * @ORM\ManyToMany(targetEntity="Project", mappedBy="neighborhoods")
     */
    private $projects;

    public function __construct() {
        $this->projects = new ArrayCollection;
    }

    public function getProjects()
    {...}

    public function setProjects(array $entities)
    {...}

    public function addProject(Project $entity)
    {...}

    public function removeProject(Project $entity)
    {...}
}

这很好用。但是我遇到的问题是删除关系。

$em->remove($neighborhood); 删除 table 'neighborhood' 中的邻域和所有table'neighborhood_project'.

中的关系

$em->remove($project);删除table'project'中的项目和不删除table'neighborhood_project'中的关系。

我尝试了很多方法来删除拥有方的关系，但没有找到任何解决方案。如何删除删除拥有方的关系？

已添加：

级联：

@ORM\ManyToMany(targetEntity="Neighborhood", inversedBy="projects", cascade={"remove"})

无济于事。这将删除实体、关系和相关实体。我需要相同的功能，例如 $em->remove($neighborhood);

Answer 1

我有，我的错。我应该只更新数据库中的架构 (doctrine:schema:update)。

学说删除拥有方多对多关系

Doctrine remove owning side Many To Many relation

php

doctrine

many-to-many

relation

symfony