# Модели Header-параметров { #header-parameter-models }

Если у вас есть группа связанных **header-параметров**, то вы можете объединить их в одну **Pydantic-модель**.

Это позволит вам **переиспользовать модель** в **разных местах**, а также задать валидацию и метаданные сразу для всех параметров. 😎

/// note | Заметка

Этот функционал доступен в FastAPI начиная с версии `0.115.0`. 🤓

///

                return markdown
        missing_translation_content = get_missing_translation_content(config.docs_dir)
        header = ""
        body = markdown
        if markdown.startswith("#"):
            header, _, body = markdown.partition("\n\n")
        return f"{header}\n\n{missing_translation_content}\n\n{body}"

<style>
.md-content .md-typeset h1 { display: none; }
</style>

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  <a href="https://fastapi.tiangolo.com/de"><img src="https://fastapi.tiangolo.com/img/logo-margin/logo-teal.png" alt="FastAPI"></a>
</p>
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    FastAPI-Framework, hohe Performanz, leicht zu lernen, schnell zu entwickeln, produktionsreif
</p>
<p align="center">

# Header Parameter Models { #header-parameter-models }

If you have a group of related **header parameters**, you can create a **Pydantic model** to declare them.

This would allow you to **re-use the model** in **multiple places** and also to declare validations and metadata for all the parameters at once. 😎

/// note

This is supported since FastAPI version `0.115.0`. 🤓

///

Você poderia criar uma classe `CustomORJSONResponse`. A principal coisa a ser feita é sobrecarregar o método render da classe Response, `Response.render(content)`, que retorna o conteúdo em bytes:

{* ../../docs_src/custom_response/tutorial009c_py39.py hl[9:14,17] *}

Agora em vez de retornar:

```json
{"message": "Hello World"}
```

	defer zipWriter.Close()
	rawDataFn := func(r io.Reader, filename string, sz int) error {
		header, zerr := zip.FileInfoHeader(dummyFileInfo{
			name:    filename,
			size:    int64(sz),
			mode:    0o600,
			modTime: time.Now(),
			isDir:   false,
			sys:     nil,
		})
		if zerr != nil {
			adminLogIf(ctx, zerr)
			return nil
		}
		header.Method = zip.Deflate

/// warning | Achtung

Sie können mehrere `File`- und `Form`-Parameter in einer *Pfadoperation* deklarieren, aber Sie können nicht auch `Body`-Felder deklarieren, die Sie als JSON erwarten, da der Body des <abbr title="Request – Anfrage: Daten, die der Client zum Server sendet">Request</abbr> mittels `multipart/form-data` statt `application/json` kodiert sein wird.

Das ist keine Limitation von **FastAPI**, sondern Teil des HTTP-Protokolls.

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  <picture>
    <source media="(prefers-color-scheme: dark)" srcset="images/gradle-white-primary.png" width="700px">
    <img alt="Gradle Logo" src="images/gradle-dark-green-primary.png" width="600px">
  </picture>
</div>

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  <a href="https://ge.gradle.org/scans">
    <img src="https://img.shields.io/badge/Revved%20up%20by-Develocity-06A0CE?logo=Gradle&labelColor=02303A" alt="Revved up by Develocity">
  </a>

from fastapi.responses import HTMLResponse, JSONResponse, PlainTextResponse
from fastapi.testclient import TestClient


class ORJSONResponse(JSONResponse):
    media_type = "application/x-orjson"

    def render(self, content: Any) -> bytes:
        return orjson.dumps(content)


class OverrideResponse(JSONResponse):
    media_type = "application/x-override"


app = FastAPI(default_response_class=ORJSONResponse)

}

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    content: 'bash';
    position: absolute;
    color: var(--color-text-subtle);
    top: 5px;
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