使用 DTO 会抛出 500 验证异常

Question

按照文档 How to Use a DTO for Writing，我收到 500 验证错误：

{
    "@context": "/api/contexts/Error",
    "@type": "hydra:Error",
    "hydra:title": "An error occurred",
    "hydra:description": "Cannot validate values of type \"NULL\" automatically. Please provide a constraint.",
    ...

DTO 与记录的相同（注意特定的命名空间）：

namespace Acme\Infrastructure\Dto;

use ApiPlatform\Core\Annotation\ApiResource;
use Symfony\Component\Validator\Constraints as Assert;

/**
 * @ApiResource(
 *      collectionOperations={
 *          "post"={
 *              "path"="/do-something",
 *          },
 *      },
 *      itemOperations={},
 * )
 */
final class DoSomethingRequest
{
    /**
     * @Assert\NotBlank
     * @Assert\Email
     */
    public $email;
}

配置如下：

# api_platform.yaml
api_platform:
    mapping:
        paths:
            - '%kernel.project_dir%/src/Infrastructure/Dto'

Answer 1

实际上，我正在调用端点发送 FormData 编码的有效负载。原来是"API Platform only supports raw documents as request input" (cf. https://api-platform.com/docs/core/form-data/).

尽管如此，我认为在这种情况下抛出一个更明确的异常比让 Symfony 的 RecursiveContextualValidator 处理带有模糊消息的情况更好。

使用 DTO 会抛出 500 验证异常

Using a DTO throws a 500 validation exception

php

symfony

api-platform.com