Esto sería útil, por ejemplo, para manejar correctamente redirecciones.

/// tip | Consejo

Puedes aprender más sobre esto en la documentación de [Detrás de un proxy - Habilitar headers reenviados por el proxy](../advanced/behind-a-proxy.md#enable-proxy-forwarded-headers){.internal-link target=_blank}

///

## Resumen { #recap }

相対URLを使っているので、APIが`https://example.com/`にある場合、`https://example.com/token`を参照します。しかし、APIが`https://example.com/api/v1/`にある場合は`https://example.com/api/v1/token`を参照することになります。

相対 URL を使うことは、[プロキシと接続](../../advanced/behind-a-proxy.md){.internal-link target=_blank}のような高度なユースケースでもアプリケーションを動作させ続けるために重要です。

///

///

This is a very simple and short tutorial, if you want to learn about databases in general, about SQL, or more advanced features, go to the <a href="https://sqlmodel.tiangolo.com/" class="external-link" target="_blank">SQLModel docs</a>.

## Install `SQLModel` { #install-sqlmodel }

This is because FastAPI uses this `root_path` to create the default `server` in OpenAPI with the URL provided by `root_path`.

## Additional servers { #additional-servers }

/// warning

This is a more advanced use case. Feel free to skip it.

///

By default, **FastAPI** will create a `server` in the OpenAPI schema with the URL for the `root_path`.

#### Newer versions of Python { #newer-versions-of-python }

The syntax using `typing` is **compatible** with all versions, from Python 3.6 to the latest ones, including Python 3.9, Python 3.10, etc.

As Python advances, **newer versions** come with improved support for these type annotations and in many cases you won't even need to import and use the `typing` module to declare the type annotations.

* Advanced auditing is the default auditing mechanism at `v1beta1`. The new version introduces the following changes:

  * The `--audit-policy-file` option is required if the `AdvancedAuditing` feature is not explicitly turned off (`--feature-gates=AdvancedAuditing=false`) on the API server.
  * The audit log file defaults to JSON encoding when using the advanced auditing feature gate.

  * También puedes agregar [dependencias de `Security` con `scopes`](../advanced/security/oauth2-scopes.md){.internal-link target=_blank}.

/// tip | Consejo

    * Você também pode adicionar [dependências de `Segurança` com `scopes`](../advanced/security/oauth2-scopes.md){.internal-link target=_blank}.

/// tip | Dica

    * Sie können auch [`Security`-Abhängigkeiten mit `scopes`](../advanced/security/oauth2-scopes.md){.internal-link target=_blank} hinzufügen.

/// tip | Tipp

### Devolver un Response Directamente { #return-a-response-directly }

El caso más común sería [devolver un Response directamente como se explica más adelante en la documentación avanzada](../advanced/response-directly.md){.internal-link target=_blank}.

{* ../../docs_src/response_model/tutorial003_02_py39.py hl[8,10:11] *}