*/
    public boolean signaturesEnabled;
    /**
     * Whether message signing is required.
     */
    public boolean signaturesRequired;
    /**
     * Maximum number of virtual circuits.
     */
    public int maxNumberVcs;
    /**
     * Maximum raw buffer size for raw read/write operations.
     */
    public int maxRawSize;
    /**
     * Server's system time.
     */

# 表單模型 { #form-models }

你可以使用 **Pydantic 模型** 在 FastAPI 中宣告 **表單欄位**。

/// info | 說明

要使用表單，首先安裝 [`python-multipart`](https://github.com/Kludex/python-multipart)。

請先建立[虛擬環境](../virtual-environments.md)、啟用後再安裝，例如：

```console
$ pip install python-multipart
```

///

/// note | 注意

此功能自 FastAPI 版本 `0.113.0` 起支援。🤓

///

## 針對表單的 Pydantic 模型 { #pydantic-models-for-forms }

        return deleteByQueryBuilder(searchEngineClient, index, queryBuilder);
    }

    /**
     * Deletes all documents associated with the specified virtual host.
     *
     * @param virtualHost the virtual host to delete documents for
     * @return the number of documents that were deleted
     */
    public long deleteByVirtualHost(final String virtualHost) {

# 폼 모델 { #form-models }

FastAPI에서 **Pydantic 모델**을 이용하여 **폼 필드**를 선언할 수 있습니다.

/// info | 정보

폼을 사용하려면, 먼저 [`python-multipart`](https://github.com/Kludex/python-multipart)를 설치하세요.

[가상 환경](../virtual-environments.md)을 생성하고 활성화한 다음, 예를 들어 아래와 같이 설치하세요:

```console
$ pip install python-multipart
```

///

/// note | 참고

이 기능은 FastAPI 버전 `0.113.0` 이후부터 지원됩니다. 🤓

///

    @Size(max = 5)
    public String available;

    /** Access permissions for documents from this data source */
    @CustomSize(maxKey = "form.admin.max.input.size")
    public String permissions;

    /** Virtual hosts where this configuration applies */
    @CustomSize(maxKey = "form.admin.max.input.size")
    public String virtualHosts;

    /** Sort order for displaying configurations */
    @Required
    @Min(value = 0)

# 表单模型 { #form-models }

你可以在 FastAPI 中使用 **Pydantic 模型**声明**表单字段**。

/// info | 信息

要使用表单，首先安装 [`python-multipart`](https://github.com/Kludex/python-multipart)。

确保你创建一个[虚拟环境](../virtual-environments.md)，激活它，然后再安装，例如：

```console
$ pip install python-multipart
```

///

/// note | 注意

自 FastAPI 版本 `0.113.0` 起支持此功能。🤓

///

## 表单的 Pydantic 模型 { #pydantic-models-for-forms }

In the end, the ultimate objective is to be able to **serve your API clients** in a way that is **secure**, to **avoid disruptions**, and to use the **compute resources** (for example remote servers/virtual machines) as efficiently as possible. 🚀

/// info | Información

Para recibir archivos subidos, primero instala [`python-multipart`](https://github.com/Kludex/python-multipart).

Asegúrate de crear un [entorno virtual](../virtual-environments.md), activarlo y luego instalarlo, por ejemplo:

```console
$ pip install python-multipart
```

Esto es porque los archivos subidos se envían como "form data".

///

Ancak `pip install fastapi` komutunu kullanırsanız, `python-multipart` paketi varsayılan olarak dahil edilmez.

Elle kurmak için bir [virtual environment](../../virtual-environments.md) oluşturduğunuzdan, onu aktive ettiğinizden emin olun ve ardından şununla kurun:

```console
$ pip install python-multipart
```

<div class="termy">

```console
$ C:\opt\custompython\bin\python
```

</div>

////

Эта информация будет полезна при изучении [Виртуальных окружений](virtual-environments.md).

## Вывод { #conclusion }

Благодаря этому вы должны иметь базовое представление о том, что такое **переменные окружения** и как использовать их в Python.