Doctrine2 关系（多对多）在 ZF3 中不起作用

Question

我花了 2 天时间解决这个问题，但我仍然找不到它不起作用的解决方案。我使用 this tutorial to implement Doctrine in Zend Framework 3. On this 站点是实体中 ManyToMany 关系的实现。我在我的项目（用户角色）中使用了它 1:1 但它不起作用。每次我想为用户 ($user->getRoles()) 获取所有角色时，我都会得到 NULL

用户实体

<?php

namespace User\Entity;

use Doctrine\ORM\Mapping as ORM;
use Development\Entity\AbstractEntity;
use Development\Entity\Traits\EntityId;
use Development\Exception\EntityException;
use Doctrine\Common\Collections\ArrayCollection;
use Utils\StringUtils;

/**
 * @ORM\Entity(repositoryClass="User\Repository\UserRepository")
 * @ORM\Table(name="user")
 */
class User extends AbstractEntity
{
use EntityId;

/**
 * @ORM\Column(name="name")
 */
protected $name;

/**
 * @ORM\Column(name="surname")
 */
protected $surname;

/**
 * @ORM\Column(name="position")
 */
protected $position;

/**
 * @ORM\Column(name="phone")
 */
protected $phone;

/**
 * @ORM\Column(name="login")
 */
protected $login;

/**
 * @ORM\Column(name="password")
 */
protected $password;

/**
 * @ORM\ManyToMany(targetEntity="User\Entity\Role")
 * @ORM\JoinTable(name="user_role",
 *      joinColumns={@ORM\JoinColumn(name="user_id", referencedColumnName="id")},
 *      inverseJoinColumns={@ORM\JoinColumn(name="role_id", referencedColumnName="id")}
 *      )
 */
private $roles;

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

public function __toString()
{
    return $this->getFullName();
}

public function addRole($role)
{
    $this->roles[] = $role;
}

public function getRoles()
{
    return $this->roles;
}

public function removeRole($role)
{
    $this->roles->removeElement($role);
}

/**
 * @param integer $mbCase
 *
 * @return string
 *
 */
public function getFullName($mbCase = MB_CASE_TITLE)
{
    if (!StringUtils::isEmpty($this->surname)) {
        $fullName = mb_convert_case($this->name . ' ' . $this->surname, $mbCase, "UTF-8");
    } else {
        $fullName = mb_convert_case($this->name, $mbCase, "UTF-8");
    }

    return trim($fullName);
}

/**
 * @return string
 *
 */
public function getLogin()
{
    return $this->login;
}

/**
 * @return string
 *
 */
public function getPassword()
{
    return $this->password;
}

/**
 * @param mixed $login
 */
public function setLogin($login)
{
    $this->login = StringUtils::toLower($login);
}
}

角色实体

<?php

namespace User\Entity;

use Development\Entity\AbstractEntity;
use Development\Entity\Traits\EntityId;
use Doctrine\ORM\Mapping as ORM;
use Doctrine\Common\Collections\ArrayCollection;

/**
 * This class represents a role.
 * @ORM\Entity()
 * @ORM\Table(name="role")
 */
class Role extends AbstractEntity
{
use EntityId;

/**
 * @ORM\Column(name="name")
 */
protected $name;

/**
 * @ORM\Column(name="description")
 */
protected $description;

/**
 * @ORM\Column(name="date_created")
 */
protected $dateCreated;

/**
 * @var Role[]
 *
 * @ORM\ManyToMany(targetEntity="User\Entity\Role")
 * @ORM\JoinTable(name="role_hierarchy",
 *      joinColumns={@ORM\JoinColumn(name="child_role_id", referencedColumnName="id")},
 *      inverseJoinColumns={@ORM\JoinColumn(name="parent_role_id", referencedColumnName="id")}
 *      )
 */
private $parentRoles;

/**
 * @var Role[]
 *
 * @ORM\ManyToMany(targetEntity="User\Entity\Role")
 * @ORM\JoinTable(name="role_hierarchy",
 *      joinColumns={@ORM\JoinColumn(name="parent_role_id", referencedColumnName="id")},
 *      inverseJoinColumns={@ORM\JoinColumn(name="child_role_id", referencedColumnName="id")}
 *      )
 */
protected $childRoles;

/**
 * @var Permission[]
 *
 * @ORM\ManyToMany(targetEntity="User\Entity\Permission")
 * @ORM\JoinTable(name="role_permission",
 *      joinColumns={@ORM\JoinColumn(name="role_id", referencedColumnName="id")},
 *      inverseJoinColumns={@ORM\JoinColumn(name="permission_id", referencedColumnName="id")}
 *      )
 */
private $permissions;

/**
 * Constructor.
 */
public function __construct()
{
    $this->parentRoles = new ArrayCollection();
    $this->childRoles = new ArrayCollection();
    $this->permissions = new ArrayCollection();
}

public function getName()
{
    return $this->name;
}

public function setName($name)
{
    $this->name = $name;
}

public function getDescription()
{
    return $this->description;
}

public function setDescription($description)
{
    $this->description = $description;
}

public function getDateCreated()
{
    return $this->dateCreated;
}

public function setDateCreated($dateCreated)
{
    $this->dateCreated = $dateCreated;
}

public function getParentRoles()
{
    return $this->parentRoles;
}

public function getChildRoles()
{
    return $this->childRoles;
}

public function getPermissions()
{
    return $this->permissions;
}
}

我正在使用最新的 Doctrine ORM 模块和 Zend3。你知道我应该在哪里寻找解决方案吗？如果需要，我将在接下来的 8 小时内添加代码。在这种教义关系中，什么是重要的？其他关系正常。

Answer 1

您确定针对数据库中的用户保存了角色吗？我会先检查一下。

这可能有帮助：Symfony2-Doctrine: ManyToMany relation is not saved to database

Answer 2

我试过你的例子，它对我有用。一些你必须考虑的事情。在 Doctrine 中，关联默认被标记为 Lazy，这意味着关联的整个集合对象在第一次访问时被填充。因此，为了填充您的角色，您必须执行以下操作：

    foreach ($user->getRoles() as $role) {
        echo $role->getName();
    }

或者，您可以在关联注释中使用 fetch="EAGER"：

/**
 * @ORM\ManyToMany(targetEntity="User\Entity\Role", fetch="EAGER")
 * @ORM\JoinTable(name="user_role",
 *      joinColumns={@ORM\JoinColumn(name="user_id", referencedColumnName="id")},
 *      inverseJoinColumns={@ORM\JoinColumn(name="role_id", referencedColumnName="id")}
 *      )
 */
private $roles;

查看此 question 以了解 fetch="EAGER" 和 fetch="LAZY"

之间的区别

Answer 3

您确定角色实体是否正确：当我使用时：

./vendor/bin/doctrine-module orm:validate-schema

我收到以下错误

Mapping
-------
[OK] The mapping files are correct.                                                                                    

Database
--------
In SchemaException.php line 112:
The table with name 'bmv5.role_hierarchy' already exists.

当我尝试 orm:schema-tool:update --force

时也是如此

Doctrine2 关系（多对多）在 ZF3 中不起作用

Doctrine2 Relationships (ManyToMany) not working in ZF3

php

doctrine-orm

orm

zend-framework3