All the initialization parameters are extracted from the request.

    Read more about it in the
    [FastAPI docs for Simple OAuth2 with Password and Bearer](https://fastapi.tiangolo.com/tutorial/security/simple-oauth2/).

    ## Example

    ```python
    from typing import Annotated

    from fastapi import Depends, FastAPI
    from fastapi.security import OAuth2PasswordRequestForm

It will be clearly marked as deprecated in the interactive docs:

<img src="/img/tutorial/path-operation-configuration/image04.png">

Check how deprecated and non-deprecated *path operations* look like:

<img src="/img/tutorial/path-operation-configuration/image05.png">

## Recap { #recap }

## さらなる機能 { #additional-features }

メインの[チュートリアル - ユーザーガイド](../tutorial/index.md)だけで、**FastAPI**の主要な機能を一通り把握するには十分なはずです。

以降のセクションでは、その他のオプション、設定、追加機能を見ていきます。

/// tip | 豆知識

以降のセクションは、**必ずしも「高度」ではありません**。

また、あなたのユースケースに対する解決策が、その中のどれかにある可能性もあります。

///

## 先にチュートリアルを読む { #read-the-tutorial-first }

メインの[チュートリアル - ユーザーガイド](../tutorial/index.md)で得た知識があれば、**FastAPI**の機能の多くは引き続き利用できます。

Now you can import and use the client code. It could look like this, notice that you get autocompletion for the methods:

<img src="/img/tutorial/generate-clients/image02.png">

You will also get autocompletion for the payload to send:

<img src="/img/tutorial/generate-clients/image03.png">

/// tip

Notice the autocompletion for `name` and `price`, that was defined in the FastAPI application, in the `Item` model.

因此，如果你未提供，**FastAPI** 會自動產生 "Successful response"。

///

<img src="/img/tutorial/path-operation-configuration/image03.png">

## 將「路徑操作」標記為已棄用 { #deprecate-a-path-operation }

若需要將「路徑操作」標記為 <dfn title="已過時，建議不要再使用">已棄用</dfn>，但不移除它，請傳入參數 `deprecated`：

{* ../../docs_src/path_operation_configuration/tutorial006_py310.py hl[16] *}

在互動式文件中，它會被清楚標示為已棄用：

<img src="/img/tutorial/path-operation-configuration/image04.png">

///

## Documentation { #documentation }

And when you open your browser at [http://127.0.0.1:8000/docs](http://127.0.0.1:8000/docs), you will see an automatic, interactive, API documentation like:

<img src="/img/tutorial/path-params/image01.png">

/// check

Again, just with that same Python type declaration, **FastAPI** gives you automatic, interactive documentation (integrating Swagger UI).

# Advanced Middleware { #advanced-middleware }

In the main tutorial you read how to add [Custom Middleware](../tutorial/middleware.md) to your application.

And then you also read how to handle [CORS with the `CORSMiddleware`](../tutorial/cors.md).

In this section we'll see how to use other middlewares.

## Adding ASGI middlewares { #adding-asgi-middlewares }

<img src="/img/tutorial/body/image01.png">

并且，还会用于需要它们的每个*路径操作*的 API 文档中：

<img src="/img/tutorial/body/image02.png">

## 编辑器支持 { #editor-support }

在编辑器中，函数内部你会在各处得到类型提示与补全（如果接收的不是 Pydantic 模型，而是 `dict`，就不会有这样的支持）：

<img src="/img/tutorial/body/image03.png">

还支持检查错误的类型操作：

<img src="/img/tutorial/body/image04.png">

这并非偶然，整个框架都是围绕这种设计构建的。

If you declare a [Response Model](../tutorial/response-model.md) FastAPI will use it to serialize the data to JSON, using Pydantic.

If you don't declare a response model, FastAPI will use the `jsonable_encoder` explained in [JSON Compatible Encoder](../tutorial/encoder.md) and put it in a `JSONResponse`.

You could also create a `JSONResponse` directly and return it.

/// tip

all the FastAPI parts you can use in your applications.

If you want to **learn FastAPI** you are much better off reading the