你会看到另一个自动生成的文档（由 <a href="https://github.com/Rebilly/ReDoc" class="external-link" target="_blank">ReDoc</a> 生成）：

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

## 示例升级

现在修改 `main.py` 文件来从 `PUT` 请求中接收请求体。

我们借助 Pydantic 来使用标准的 Python 类型声明请求体。

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

from fastapi import FastAPI

Zobaczysz alternatywną, lecz wciąż automatyczną dokumentację (wygenerowaną z pomocą <a href="https://github.com/Rebilly/ReDoc" class="external-link" target="_blank">ReDoc</a>):

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

## Aktualizacja przykładu

Zmodyfikuj teraz plik `main.py`, aby otrzmywał treść (body) żądania `PUT`.

Zadeklaruj treść żądania, używając standardowych typów w Pythonie dzięki Pydantic.

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-03-swagger-02.png)

* Альтернативная документация API в <a href="https://github.com/Rebilly/ReDoc" class="external-link" target="_blank"><strong>ReDoc</strong></a>.

![ReDoc](https://fastapi.tiangolo.com/img/index/index-06-redoc-02.png)

### Только современный Python

	for _, user := range users {
		userIDs = append(userIDs, user.ID)
	}

	var users2 []User
	DB.Preload("Pets.Toy", "name like ?", `%preload_3`).Find(&users2, "id IN ?", userIDs)

	for idx, user := range users2[0:2] {
		for _, pet := range user.Pets {
			if pet.Toy.Name != "" {
				t.Errorf("No toy should for user %v's pet %v but got %v", idx+1, pet.Name, pet.Toy.Name)
			}
		}
	}

	if len(users2[2].Pets) != 3 {

- github.com/lestrrat-go/blackmagic: [v1.0.2](https://github.com/lestrrat-go/blackmagic/tree/v1.0.2)
- github.com/lestrrat-go/httpcc: [v1.0.1](https://github.com/lestrrat-go/httpcc/tree/v1.0.1)
- github.com/lestrrat-go/iter: [v1.0.2](https://github.com/lestrrat-go/iter/tree/v1.0.2)
- github.com/lestrrat-go/jwx: [v1.2.28](https://github.com/lestrrat-go/jwx/tree/v1.2.28)

        squashBytesToInts( clearText, clearOff, tempInts, 0, 2 );
        des( tempInts, tempInts, encryptKeys );
        spreadIntsToBytes( tempInts, 0, cipherText, cipherOff, 2 );
    }

    /// Decrypt a block of eight bytes.
    private void decrypt( byte[] cipherText, int cipherOff, byte[] clearText, int clearOff ) {

        squashBytesToInts( cipherText, cipherOff, tempInts, 0, 2 );
        des( tempInts, tempInts, decryptKeys );

Вы увидите альтернативную автоматическую документацию (предоставленную <a href="https://github.com/Rebilly/ReDoc" class="external-link" target="_blank">ReDoc</a>):

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

## Пример обновления

Теперь измените файл `main.py`, чтобы получить тело ответа из `PUT` запроса.

Объявите тело, используя стандартную типизацию Python, спасибо Pydantic.

	}
	if len(data) <= 4 {
		return b, fmt.Errorf("loadBucketMetadata: no data")
	}
	// Read header
	switch binary.LittleEndian.Uint16(data[0:2]) {
	case bucketMetadataFormat:
	default:
		return b, fmt.Errorf("loadBucketMetadata: unknown format: %d", binary.LittleEndian.Uint16(data[0:2]))
	}
	switch binary.LittleEndian.Uint16(data[2:4]) {
	case bucketMetadataVersion:
	default:

Sie sehen die alternative automatische Dokumentation (bereitgestellt von <a href="https://github.com/Rebilly/ReDoc" class="external-link" target="_blank">ReDoc</a>):

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

## Beispiel Aktualisierung

Vedrai la documentazione interattiva dell'API (offerta da <a href="https://github.com/Rebilly/ReDoc" class="external-link" target="_blank">ReDoc</a>):

![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.