**FastAPI** 将从请求中的**表单数据**中**提取**出**每个字段**的数据，并提供你定义的 Pydantic 模型。

## 检查文档 { #check-the-docs }

你可以在文档 UI 中验证它，地址为 `/docs`：

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

## 禁止额外的表单字段 { #forbid-extra-form-fields }

在某些特殊使用情况下（可能并不常见），你可能希望将表单字段**限制**为仅在 Pydantic 模型中声明过的字段，并**禁止**任何**额外**的字段。

/// note | 注意

自 FastAPI 版本 `0.114.0` 起支持此功能。🤓

    /**
     * Return the requested activation(s) of project(s) in this execution.
     * @return requested (de-)activation(s) of project(s) in this execution. Never {@code null}.
     */
    ProjectActivation getProjectActivation();

    /**
     * Return the requested activation(s) of profile(s) in this execution.
     * @return requested (de-)activation(s) of profile(s) in this execution. Never {@code null}.

	207, 151, 211, 146, // message crc.
}

// newErrorMessage - creates new Request Level Error Message. S3 sends this message if the request failed for any reason.
// It contains the error code and error message for the failure. If S3 sends a RequestLevelError message,
// it doesn't send an End message.
//
// Header specification:
// Request-level error messages contain three headers, as follows:

/// note | Technische Details

Ein `Request` hat ein `request.scope`-Attribut, welches einfach ein Python-<abbr title="Dictionary – Zuordnungstabelle: In anderen Sprachen auch Hash, Map, Objekt, Assoziatives Array genannt">`dict`</abbr> ist, welches die mit dem Request verbundenen Metadaten enthält.

Ein `Request` hat auch ein `request.receive`, welches eine Funktion ist, die den Body des Requests <abbr title="Englisch „receive“">empfängt</abbr>.

# Request Formları ve Dosyalar { #request-forms-and-files }

`File` ve `Form` kullanarak aynı anda hem dosyaları hem de form alanlarını tanımlayabilirsiniz.

/// info | Bilgi

Yüklenen dosyaları ve/veya form verisini almak için önce [`python-multipart`](https://github.com/Kludex/python-multipart) paketini kurun.

Bir [sanal ortam](../virtual-environments.md) oluşturduğunuzdan, onu aktive ettiğinizden ve ardından paketi kurduğunuzdan emin olun, örneğin:

/// note | Технічні деталі

У `Request` є атрибут `request.scope` - це просто Python `dict`, що містить метадані, пов'язані із запитом.

Також `Request` має `request.receive` - це функція для «отримання» тіла запиту.

`scope` `dict` і функція `receive` є частиною специфікації ASGI.

І саме ці дві сутності - `scope` та `receive` - потрібні для створення нового екземпляра `Request`.

  private fun assertConnectionReused(vararg requests: Request?) {
    for (i in requests.indices) {
      val response = client.newCall(requests[i]!!).execute()
      response.body.string() // Discard the response body.
      assertThat(server.takeRequest().exchangeIndex).isEqualTo(i)
    }
  }

  private fun assertConnectionNotReused(vararg requests: Request?) {
    for (request in requests) {

     * @param artifactId The artifact identifier of the POM, must not be {@code null}.
     * @param version The version of the POM, must not be {@code null}.
     * @return The source of the requested POM, never {@code null}.
     * @throws UnresolvableModelException If the POM could not be resolved from any configured repository.
     */

Örneğin, Pydantic ile FastAPI’nin otomatik özelliklerini kullanmadan request’i kendi kodunuzla okuyup doğrulamaya karar verebilirsiniz; ancak yine de OpenAPI şemasında request’i tanımlamak isteyebilirsiniz.

Bunu `openapi_extra` ile yapabilirsiniz:

{* ../../docs_src/path_operation_advanced_configuration/tutorial006_py310.py hl[19:36, 39:40] *}

    /**
     * Shortcut for {@code getService(ArtifactResolver.class).resolve(...)}.
     *
     * @param coordinates coordinates of the artifact to resolve
     * @return requested artifact together with the path to its file
     * @throws org.apache.maven.api.services.ArtifactResolverException if the artifact resolution failed
     *