接下来，创建使用 `GzipRequest` 的 `fastapi.routing.APIRoute  ` 的自定义子类。

此时，这个自定义子类会覆盖 `APIRoute.get_route_handler()`。

`APIRoute.get_route_handler()` 方法返回的是函数，并且返回的函数接收请求并返回响应。

本例用它根据原始请求创建 `GzipRequest`。

```Python hl_lines="18-26"
{!../../../docs_src/custom_request_and_route/tutorial001.py!}
```

!!! note "技术细节"

    `Request` 的 `request.scope` 属性是包含关联请求元数据的字典。

    `Request` 的 `request.receive` 方法是**接收**请求体的函数。

=== "Python 3.10+"

    ```Python hl_lines="16"
    {!> ../../../docs_src/body/tutorial001_py310.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="18"
    {!> ../../../docs_src/body/tutorial001.py!}
    ```

...그리고 만들어낸 모델인 `Item`으로 타입을 선언합니다.

## 결과

위에서의 단순한 파이썬 타입 선언으로, **FastAPI**는 다음과 같이 동작합니다:

* 요청의 본문을 JSON으로 읽어 들입니다.

# 📨 🍪

## ⚙️ `Response` 🔢

👆 💪 📣 🔢 🆎 `Response` 👆 *➡ 🛠️ 🔢*.

& ⤴️ 👆 💪 ⚒ 🍪 👈 *🔀* 📨 🎚.

```Python hl_lines="1  8-9"
{!../../../docs_src/response_cookies/tutorial002.py!}
```

& ⤴️ 👆 💪 📨 🙆 🎚 👆 💪, 👆 🛎 🔜 ( `dict`, 💽 🏷, ♒️).

& 🚥 👆 📣 `response_model`, ⚫️ 🔜 ⚙️ ⛽ & 🗜 🎚 👆 📨.

**FastAPI** 🔜 ⚙️ 👈 *🔀* 📨 ⚗ 🍪 (🎚 & 👔 📟), & 🔜 🚮 👫 🏁 📨 👈 🔌 💲 👆 📨, ⛽ 🙆 `response_model`.

    ```

### Das Kindmodell als Typ verwenden

Und dann können wir es als Typ eines Attributes verwenden.

=== "Python 3.10+"

    ```Python hl_lines="18"
    {!> ../../../docs_src/body_nested_models/tutorial004_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="20"
    {!> ../../../docs_src/body_nested_models/tutorial004_py39.py!}
    ```

This method returns a function. And that function is what will receive a request and return a response.

Here we use it to create a `GzipRequest` from the original request.

```Python hl_lines="18-26"
{!../../../docs_src/custom_request_and_route/tutorial001.py!}
```

!!! note "Technical Details"
    A `Request` has a `request.scope` attribute, that's just a Python `dict` containing the metadata related to the request.

And you can also declare body parameters as optional, by setting the default to `None`:

=== "Python 3.10+"

    ```Python hl_lines="18-20"
    {!> ../../../docs_src/body_multiple_params/tutorial001_an_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="18-20"
    {!> ../../../docs_src/body_multiple_params/tutorial001_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="19-21"

👉 🕰, ⚫️ 🔜 📁 👩‍🔬 `APIRoute.get_route_handler()`.

👉 👩‍🔬 📨 🔢. & 👈 🔢 ⚫️❔ 🔜 📨 📨 & 📨 📨.

📥 👥 ⚙️ ⚫️ ✍ `GzipRequest` ⚪️➡️ ⏮️ 📨.

```Python hl_lines="18-26"
{!../../../docs_src/custom_request_and_route/tutorial001.py!}
```

!!! note "📡 ℹ"
     `Request` ✔️ `request.scope` 🔢, 👈 🐍 `dict` ⚗ 🗃 🔗 📨.

     `Request` ✔️ `request.receive`, 👈 🔢 "📨" 💪 📨.

**FastAPI** unterstützt diese genauso wie einfache Strings:

```Python hl_lines="1  8-10  13  18"
{!../../../docs_src/path_operation_configuration/tutorial002b.py!}
```

## Zusammenfassung und Beschreibung

Sie können eine Zusammenfassung (`summary`) und eine Beschreibung (`description`) hinzufügen:

=== "Python 3.10+"

    ```Python hl_lines="18-19"
    {!> ../../../docs_src/path_operation_configuration/tutorial003_py310.py!}

**FastAPI** поддерживает это так же, как и в случае с обычными строками:

```Python hl_lines="1  8-10  13  18"
{!../../../docs_src/path_operation_configuration/tutorial002b.py!}
```

## Краткое и развёрнутое содержание

Вы можете добавить параметры `summary` и `description`:

=== "Python 3.10+"

    ```Python hl_lines="18-19"
    {!> ../../../docs_src/path_operation_configuration/tutorial003_py310.py!}
    ```

`Depends()`로 된 `list`이어야합니다:

=== "Python 3.9+"

    ```Python hl_lines="19"
    {!> ../../../docs_src/dependencies/tutorial006_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="18"
    {!> ../../../docs_src/dependencies/tutorial006_an.py!}
    ```

=== "Python 3.8 Annotated가 없는 경우"

    !!! tip "팁"
        가능하다면 `Annotated`가 달린 버전을 권장합니다.

    ```Python hl_lines="17"