php - 使用 Symfony Validator 验证 Doctrine 实体

Question

我很难将 Symfony 验证器组件与 Doctrine 集成(独立的，不使用完整的 Symfony 框架)。到目前为止，我已经成功地在 Doctrine 的 AnnotationRegistry 中注册了注释约束并 Hook 到生命周期回调中，但是我如何实际检索验证器并解析生命周期方法中的注释？

我的实体看起来像这样:

<?php
namespace App\Model;

use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Constraints as Assert;

/**
 * User
 *
 * @ORM\HasLifecycleCallbacks
 * @ORM\Table(name="users", uniqueConstraints={@ORM\UniqueConstraint(name="id_UNIQUE", columns={"id"}), @ORM\UniqueConstraint(name="username_UNIQUE", columns={"username"})})
 * @ORM\Entity(repositoryClass="App\Repository\UserRepository")
 */
class User extends AbstractEntity
{
    /**
     * @ORM\PreUpdate
     * @ORM\PrePersist
     */
    public function validate()
    {
        // how do I retrieve the validator?

        // $validator->validate($this);
    }

    /**
     * @var string
     *
     * @ORM\Column(name="username", type="string", length=45, nullable=false)
     * @Assert\Length(min=3, max=45)
     */
    protected $username;

    /** ... */
}

Answer 1

因为你没有使用 symfony fullstack，你应该手动创建一个验证器服务来使用它。

参见 Usage Section of Validator component readme

use Symfony\Component\Validator\Validation;
use Symfony\Component\Validator\Constraints as Assert;

class User
{
    /**
     * @Assert\Length(min = 3)
     * @Assert\NotBlank
     */
    private $name;

    /**
     * @Assert\Email
     * @Assert\NotBlank
     */
    private $email;

    public function __construct($name, $email)
    {
        $this->name = $name;
        $this->email = $email;
    }

    /**
     * @Assert\True(message = "The user should have a Google Mail account")
     */
    public function isGmailUser()
    {
        return false !== strpos($this->email, '@gmail.com');
    }
}

验证器

$validator = Validation::createValidatorBuilder()
    ->enableAnnotationMapping()
    ->getValidator();

$user = new User('John Doe', 'john@example.com');

$violations = $validator->validate($user);