🔨 👉, 👆 `GzipRequest` 🔜 ✊ 💅 🗜 📊 (🚥 💪) ⏭ 🚶‍♀️ ⚫️ 👆 *➡ 🛠️*.

⏮️ 👈, 🌐 🏭 ⚛ 🎏.

✋️ ↩️ 👆 🔀 `GzipRequest.body`, 📨 💪 🔜 🔁 🗜 🕐❔ ⚫️ 📐 **FastAPI** 🕐❔ 💪.

## 🔐 📨 💪 ⚠ 🐕‍🦺

!!! tip
    ❎ 👉 🎏 ⚠, ⚫️ 🎲 📚 ⏩ ⚙️ `body` 🛃 🐕‍🦺 `RequestValidationError` ([🚚 ❌](../tutorial/handling-errors.md#requestvalidationerror){.internal-link target=_blank}).

    ✋️ 👉 🖼 ☑ & ⚫️ 🎦 ❔ 🔗 ⏮️ 🔗 🦲.

### 使用 `RequestValidationError` 的请求体

`RequestValidationError` 包含其接收到的无效数据请求的 `body` 。

开发时，可以用这个请求体生成日志、调试错误，并返回给用户。

```Python hl_lines="14"
{!../../../docs_src/handling_errors/tutorial005.py!}

```

现在试着发送一个无效的 `item`，例如：

```JSON
{
  "title": "towel",
  "size": "XL"
}

```

收到的响应包含 `body` 信息，并说明数据是无效的：

```JSON hl_lines="12-15"
{
  "detail": [
    {

* Documentación automática del modelo de datos con <a href="https://json-schema.org/" class="external-link" target="_blank"><strong>JSON Schema</strong></a> (dado que OpenAPI mismo está basado en JSON Schema).

![ReDoc](https://fastapi.tiangolo.com/img/index/index-02-redoc-simple.png)

## Example upgrade

Now modify the file `main.py` to receive a body from a `PUT` request.

Declare the body using standard Python types, thanks to Pydantic.

```Python hl_lines="4  9-12  25-27"
from typing import Union

from fastapi import FastAPI
from pydantic import BaseModel

```

In this example, we didn't declare any Pydantic model. In fact, the request body is not even <abbr title="converted from some plain format, like bytes, into Python objects">parsed</abbr> as JSON, it is read directly as `bytes`, and the function `magic_data_reader()` would be in charge of parsing it in some way.

Nevertheless, we can declare the expected schema for the request body.

### Custom OpenAPI content type

        callableSymbol: KtFirSymbol<*>,
        crossinline process: (FirTypeScope, FirDeclaration) -> Unit
    ) {
        containingDeclaration.firSymbol.lazyResolveToPhase(FirResolvePhase.IMPLICIT_TYPES_BODY_RESOLVE)
        val firContainer = containingDeclaration.firSymbol.fir
        val firCallableDeclaration = callableSymbol.firSymbol.fir

        val firSession = callableSymbol.analysisSession.useSiteSession

## Beispiel Aktualisierung

Ändern Sie jetzt die Datei `main.py`, um den <abbr title="Body – Körper, Inhalt: Der eigentliche Inhalt einer Nachricht, nicht die Metadaten">Body</abbr> einer `PUT`-Anfrage zu empfangen.

Deklarieren Sie den Body mithilfe von Standard-Python-Typen, dank Pydantic.

```Python hl_lines="4  9-12  25-27"
from typing import Union

from fastapi import FastAPI

![ReDoc](https://fastapi.tiangolo.com/img/index/index-02-redoc-simple.png)

## Esempio più avanzato

Adesso modifica il file `main.py` per ricevere un _body_ da una richiesta `PUT`.

Dichiara il _body_ usando le annotazioni di tipo standard di Python, grazie a Pydantic.

```Python hl_lines="2  7-10  23-25"
from fastapi import FastAPI
from pydantic import BaseModel
from typing import Optional

        )
    }
    add(FirErrors.ABSTRACT_FUNCTION_WITH_BODY) { firDiagnostic ->
        AbstractFunctionWithBodyImpl(
            firSymbolBuilder.callableBuilder.buildCallableSymbol(firDiagnostic.a),
            firDiagnostic as KtPsiDiagnostic,
            token,
        )
    }
    add(FirErrors.NON_ABSTRACT_FUNCTION_WITH_NO_BODY) { firDiagnostic ->
        NonAbstractFunctionWithNoBodyImpl(

    * Puisque le paramètre `q` est déclaré avec `= None`, il est facultatif.
    * Sans le `None`, il serait nécessaire (comme l'est <abbr title="en anglais : body">le corps</abbr> de la requête dans le cas du `PUT`).
* Pour les requêtes `PUT` vers `/items/{item_id}`, de lire <abbr title="en anglais : body">le corps</abbr>  en <abbr title="JavaScript Object Notation">JSON</abbr> :
    * Vérifier qu'il a un attribut obligatoire `name` qui devrait être un `str`.