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JSON:API: `JsonApiCollectionBaseSchemaNoPagination` declares `data` as `type: array` without `items`

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2/5
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新手友好度
82/100
Issue 类型
缺陷
描述清晰度
描述清楚
活跃度
活跃
技术栈
openapi, php
领域
api

调研方向

从 JsonApi\JsonSchema\SchemaFactory::buildSchema() 开始,找到 COLLECTION_BASE_SCHEMA_NAME_NO_PAGINATION 的定义,其中 data 被声明为 type: array 且没有 items。使用 Book 示例运行 bin/console api:openapi:export 复现问题,并用 OpenAPI 3.0 验证器检查输出。当 data 具有 items 模式(例如 {"type": "object"})、3.0 文档通过验证且现有的 JSON:API 模式测试仍然通过时,即完成。

由索引模型根据 Issue 内容生成。

描述

API Platform version(s) affected

4.4.4

Description

When pagination is disabled on a GetCollection operation, the JSON:API collection response refers to JsonApiCollectionBaseSchemaNoPagination. In that schema, data is {"type": "array"} with no items.

OpenAPI 3.0 requires items when type is array, so 3.0 validators and some code generators reject the document. In 3.1 and 3.2 the schema is valid, but it says nothing about the members.

How to reproduce
#[ApiResource(operations: [
    new Get(provider: [self::class, 'provide']),
    new GetCollection(paginationEnabled: false, provider: [self::class, 'provideAll']),
])]
final class Book
{
    public function __construct(public int $id = 1, public string $title = 'Dune') {}
    public static function provide(): self { return new self(); }
    /** @return list<self> */
    public static function provideAll(): array { return [new self()]; }
}

Generated schema (shortened):

"JsonApiCollectionBaseSchemaNoPagination": {
  "type": "object",
  "properties": {
    "links": { "...": "..." },
    "meta": { "...": "..." },
    "data": { "type": "array" }
  },
  "required": ["data"]
}

Expected: data has an items schema, for example {"type": "object"}. The concrete collection schema can still narrow it with allOf.

Possible Solution

Add 'items' => ['type' => 'object'] to data in the COLLECTION_BASE_SCHEMA_NAME_NO_PAGINATION definition in JsonApi\JsonSchema\SchemaFactory::buildSchema().

Additional Context

Checked on api-platform/core v4.4.4, Symfony 7.4, PHP 8.5, in an empty Symfony app. The code of JsonApi\JsonSchema\SchemaFactory on main is the same as in v4.4.4.

The app has only FrameworkBundle, TwigBundle and ApiPlatformBundle, with this config:

$c->extension('api_platform', [
    'mapping' => ['paths' => ['%kernel.project_dir%/src/ApiResource']],
    'formats' => ['jsonapi' => ['application/vnd.api+json']],
    'docs_formats' => ['jsonopenapi' => ['application/vnd.openapi+json']],
    'doctrine' => ['enabled' => false],
]);

The spec comes from bin/console api:openapi:export.

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