在 Pydantic 模型中宣告你需要的標頭參數，然後將參數宣告為 `Header`：

{* ../../docs_src/header_param_models/tutorial001_an_py310.py hl[9:14,18] *}

FastAPI 會從請求的標頭為每個欄位擷取資料，並交給你已定義的 Pydantic 模型實例。

## 檢視文件 { #check-the-docs }

你可以在 `/docs` 的文件介面看到所需的標頭：

<div class="screenshot">
<img src="/img/tutorial/header-param-models/image01.png">
</div>

## 禁止額外標頭 { #forbid-extra-headers }

在某些特殊情境（可能不常見）下，你可能想限制允許接收的標頭。

# https://docs.github.com/en/communities/using-templates-to-encourage-useful-issues-and-pull-requests/configuring-issue-templates-for-your-repository#creating-issue-forms
# https://docs.github.com/en/communities/using-templates-to-encourage-useful-issues-and-pull-requests/syntax-for-githubs-form-schema
name: Bugs
description: The go command, standard library, or anything else
title: "import/path: issue title"

body:
  - type: markdown
    attributes:

///

## Check the automatic API docs { #check-the-automatic-api-docs }

Now, run your app:

<div class="termy">

```console
$ fastapi dev

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

And open the docs at [http://127.0.0.1:8000/docs](http://127.0.0.1:8000/docs).

## ドキュメントの確認 { #check-the-docs }

対話的APIドキュメントUI `/docs` で、定義されているクッキーを確認できます:

<div class="screenshot">
<img src="/img/tutorial/cookie-param-models/image01.png">
</div>

/// info | 情報

**ブラウザがクッキーを処理し**ていますが、特別な方法で内部的に処理を行っているために、**JavaScript**からは簡単に操作**できない**ことに留意してください。

**APIドキュメントUI** `/docs` にアクセスすれば、*path operation*に関するクッキーの**ドキュメンテーション**を確認できます。

   * `Synchronized` doesn't guarantee that it will hold the mutex for those calls because callers
   * are responsible for taking the mutex themselves:
   * https://docs.oracle.com/en/java/javase/22/docs/api/java.base/java/util/Collections.html#synchronizedCollection(java.util.Collection)
   *
   * Similarly, we avoid having those methods *implemented* in terms of *other* TestSet methods

{* ../../docs_src/middleware/tutorial001_py310.py hl[8:9,11,14] *}

/// tip | Dica

Tenha em mente que cabeçalhos proprietários personalizados podem ser adicionados [usando o prefixo `X-`](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers).

pid=$!

./mc ready myminio

./mc admin user add myminio/ minio123 minio123
./mc admin user add myminio/ minio12345 minio12345

./mc admin policy create myminio/ rw ./docs/distributed/rw.json
./mc admin policy create myminio/ lake ./docs/distributed/rw.json

./mc admin policy attach myminio/ rw --user=minio123
./mc admin policy attach myminio/ lake --user=minio12345

./mc mb -l myminio/versioned

updateStrategy: RollingUpdate ## Pod priority settings ## ref: https://kubernetes.io/docs/concepts/configuration/pod-priority-preemption/ ## priorityClassName: "" ## Pod runtime class name ## ref https://kubernetes.io/docs/concepts/containers/runtime-class/ ## runtimeClassName: "" ## Set default rootUser, rootPassword ## AccessKey and secretKey is generated when not set ## Distributed MinIO ref: https://min.io/docs/minio/linux/operations/install-deploy-manage/deploy-minio-multi-node-multi-drive.html...

* They are not synced with the code to reflect the eventual solution that is committed
* Google Docs is not a "code-oriented" tool, like Markdown can be
* Review in Google Docs is not as simple as a PR code review in GitHub

## Decision

The *Build Tool Team* has decided to use Architectural Decision Records (aka ADR) to track decisions we want to follow.

    * 在請求與回應中會以 ISO 8601 格式的 `str` 表示，例如：`14:23:55.003`。
* `datetime.timedelta`：
    * Python 的 `datetime.timedelta`。
    * 在請求與回應中會以總秒數的 `float` 表示。
    * Pydantic 也允許用「ISO 8601 time diff encoding」來表示，[詳情見文件](https://docs.pydantic.dev/latest/concepts/serialization/#custom-serializers)。
* `frozenset`：
    * 在請求與回應中與 `set` 相同處理：
        * 在請求中，會讀取一個 list，去除重複並轉為 `set`。
        * 在回應中，`set` 會被轉為 `list`。