# Body - Fields { #body-fields }

The same way you can declare additional validation and metadata in *path operation function* parameters with `Query`, `Path` and `Body`, you can declare validation and metadata inside of Pydantic models using Pydantic's `Field`.

## Import `Field` { #import-field }

First, you have to import it:

{* ../../docs_src/body_fields/tutorial001_an_py310.py hl[4] *}


/// warning

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## Notas { #notes }

Cuando devuelves una `Response` directamente, sus datos no son validados, convertidos (serializados), ni documentados automáticamente.

Pero aún puedes documentarlo como se describe en [Additional Responses in OpenAPI](additional-responses.md).

Sie wird nicht in der Dokumentation angezeigt, aber andere Tools (wie z. B. Sphinx) können den Rest verwenden.

{* ../../docs_src/path_operation_advanced_configuration/tutorial004_py310.py hl[17:27] *}

## Zusätzliche Responses { #additional-responses }

Sie haben wahrscheinlich gesehen, wie man das `response_model` und den `status_code` für eine *Pfadoperation* deklariert.

Dokümantasyonda görünmez, ancak diğer araçlar (Sphinx gibi) geri kalan kısmı kullanabilir.

{* ../../docs_src/path_operation_advanced_configuration/tutorial004_py310.py hl[17:27] *}

## Ek Responses { #additional-responses }

Muhtemelen bir *path operation* için `response_model` ve `status_code` tanımlamayı görmüşsünüzdür.

Bu, bir *path operation*’ın ana response’u ile ilgili metadata’yı tanımlar.

# Resources { #resources }

    /** List of search result documents. */
    protected List<Map<String, Object>> documentItems;

    /** Facet response containing aggregated search facets. */
    protected FacetResponse facetResponse;

    /** Additional highlight parameters to append to URLs. */
    protected String appendHighlightParams;

    /** Formatted execution time for the search request. */
    protected String execTime;

    /** Number of results per page. */

Cela n’apparaîtra pas dans la documentation, mais d’autres outils (comme Sphinx) pourront utiliser le reste.

{* ../../docs_src/path_operation_advanced_configuration/tutorial004_py310.py hl[17:27] *}

## Réponses supplémentaires { #additional-responses }

Vous avez probablement vu comment déclarer le `response_model` et le `status_code` pour un chemin d’accès.

Cela définit les métadonnées sur la réponse principale d’un chemin d’accès.

# Расширенное руководство пользователя { #advanced-user-guide }

## Дополнительные возможности { #additional-features }

Основное [Учебник - Руководство пользователя](../tutorial/index.md) должно быть достаточно, чтобы познакомить вас со всеми основными функциями **FastAPI**.

В следующих разделах вы увидите другие варианты, конфигурации и дополнительные возможности.

/// tip | Совет

Следующие разделы **не обязательно являются "продвинутыми"**.

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