如何在传统的PHP项目中使用symfony2验证器组件？

问题描述

我有一个不是symfony2项目的遗留项目，但是有symfony2组件可用。

I have a legacy project that is not a symfony2 project, yet has the symfony2 components available.

我有Doctrine实体，我想要能够断言他们通过注释。我没有容器，不能打电话：

I have Doctrine entities, and I want to be able to assert them via annotations. I do not have a container and cannot just call:

$container->get('validator')->validate($entity);

推荐答案

您可以通过以下方式初始化验证器：

You can initialize the Validator via:

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

您通过以下方式验证一个实体：

And you validate an entity via:

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

如果 $ violation 是一个空数组，该实体已验证，否则您将获得违规行为，并可以：

If $violations is an empty array, the entity was validated, otherwise you will get the violations and can:

if (count($violations) > 0)
    foreach($violations as $violation) {
         $this->getLogger()->warning($violation->getMessage());
    }
}

您断言您的实体，并确保所有注释被使用。我使用的遗留项目没有包含 @Entity 注释，虽然没有打扰Doctrine，但确实扰乱了验证过程。

You assert your entity and make sure that all the annotations are used. The legacy project I was using e.g. did not include the @Entity annotation, and while it didn't bother Doctrine, it did bother the validation process.

<?php
namespace Hive\Model\YourEntity;

use Doctrine\ORM\Mapping\Column;
use Doctrine\ORM\Mapping\Entity;
use Doctrine\ORM\Mapping\Id;
use Doctrine\ORM\Mapping\ManyToOne;
use Doctrine\ORM\Mapping\Table;
use Symfony\Component\Validator\Constraints\NotNull;

/**
 * Class AdGroupAd
 * @Entity(repositoryClass="YourEntityRepository")
 * @Table(name="your_entity_table_name")
 */
class AdGroupAd
{
     ...

    /**
     * @Column(type="string")
     * @var string
     * @NotNull()
     */
    protected $status;

    ...

最后，您必须自行加载注释。 Doctrine不会使用默认的自动装载机，您必须具体使用 Doctrine\Common\Annotations\AnnotationRegistry

And finally, you must autload the annotations. Doctrine will not use the default autoloader, you have to specifically use the Doctrine\Common\Annotations\AnnotationRegistry

您可以通过以下方式执行：

You can do it via:

AnnotationRegistry::registerAutoloadNamespace(
    "Symfony",
    PATH_TO_YOUR_WEB_ROOT . "/vendor/symfony/symfony/src"
);

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