`id`* (`id=None`), предполагая, что база данных *сгенерирует его при сохранении*. SQLModel понимает, что база данных предоставит `id`, и *определяет столбец как `INTEGER` (не `NULL`)* в схеме базы данных. См. <a href="https://sqlmodel.tiangolo.com/tutorial/create-db-and-table/#primary-key-id" class="external-link" target="_blank">документацию SQLModel о первичных ключах</a> для подробностей.

* `Field(index=True)` сообщает SQLModel, что нужно создать **SQL индекс** для этого столбца, что позволит...

<img src="https://fastapi.tiangolo.com//img/tutorial/sub-applications/image01.png">

다음으로, <a href="http://127.0.0.1:8000/subapi/docs" class="external-link" target="_blank">http://127.0.0.1:8000/subapi/docs</a>에서 하위 응용프로그램의 문서를 여십시오.

하위 경로 접두사 `/subapi` 아래에 선언된 *경로 동작* 을 포함하는, 하위 응용프로그램에 대한 자동 API 문서를 확인할 수 있습니다:

<img src="https://fastapi.tiangolo.com//img/tutorial/sub-applications/image02.png">

# Response - Change Status Code { #response-change-status-code }

You probably read before that you can set a default [Response Status Code](../tutorial/response-status-code.md){.internal-link target=_blank}.

But in some cases you need to return a different status code than the default.

## Use case { #use-case }

For example, imagine that you want to return an HTTP status code of "OK" `200` by default.

///

**FastAPI** tamamen Pydantic'e dayanmaktadır.

Daha fazlasini görmek için [Tutorial - User Guide](tutorial/index.md){.internal-link target=_blank}.

##  **FastAPI** tip belirteçleri

**FastAPI** birkaç şey yapmak için bu tür tip belirteçlerinden faydalanır.

Wenn Sie die Seite <a href="http://127.0.0.1:8000/docs" class="external-link" target="_blank">http://127.0.0.1:8000/docs</a> in Ihrem Browser öffnen, sehen Sie eine automatische, interaktive API-Dokumentation:

<img src="/img/tutorial/path-params/image01.png">

/// check | Testen

Wiederum, mit dieser gleichen Python-Typdeklaration gibt Ihnen **FastAPI** eine automatische, interaktive Dokumentation (verwendet die Swagger-Benutzeroberfläche).

## Check it { #check-it }

Go to the interactive docs at: <a href="http://127.0.0.1:8000/docs" class="external-link" target="_blank">http://127.0.0.1:8000/docs</a>.

You will see something like this:

<img src="/img/tutorial/security/image01.png">

/// check | Authorize button!

You already have a shiny new "Authorize" button.

And your *path operation* has a little lock in the top-right corner that you can click.

///

## Dependencias para grupos de *path operations* { #dependencies-for-groups-of-path-operations }

# Retorno - Altere o Código de Status { #response-change-status-code }

Você provavelmente leu anteriormente que você pode definir um [Código de Status do Retorno](../tutorial/response-status-code.md){.internal-link target=_blank} padrão.

Porém em alguns casos você precisa retornar um código de status diferente do padrão.

## Caso de uso { #use-case }

Por exemplo, imagine que você deseja retornar um código de status HTTP de "OK" `200` por padrão.

    page.get_by_text("POST/items/Create Item").click()
    page.get_by_role("tab", name="Schema").first.click()
    # Manually add the screenshot
    page.screenshot(
        path="docs/en/docs/img/tutorial/separate-openapi-schemas/image01.png"
    )

    # ---------------------
    context.close()
    browser.close()


process = subprocess.Popen(

///

它可以：

* 在响应中返回状态码
* 在 OpenAPI 概图（及用户界面）中存档：

<img src="/img/tutorial/response-status-code/image01.png">

/// note | 笔记

某些响应状态码表示响应没有响应体（参阅下一章）。

FastAPI 可以进行识别，并生成表明无响应体的 OpenAPI 文档。

///

## 关于 HTTP 状态码

/// note | 笔记

如果已经了解 HTTP 状态码，请跳到下一章。

///