<div class="md-copyright__highlight">
        The FastAPI trademark is owned by <a href="https://tiangolo.com" target="_blank">@tiangolo</a> and is registered in the US and across other regions
    </div>
    {% if not config.extra.generator == false %}
    Made with
    <a href="https://squidfunk.github.io/mkdocs-material/" target="_blank" rel="noopener">
        Material for MkDocs
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    {% endif %}

対話的APIドキュメント `/docs` でクエリパラメータを確認できます:

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

## 余分なクエリパラメータを禁止する { #forbid-extra-query-parameters }

特定の（あまり一般的ではないかもしれない）ユースケースで、受け取りたいクエリパラメータを**制限**したい場合があります。

Pydanticのモデル設定を使って、あらゆる `extra` フィールドを `forbid` にできます。

{* ../../docs_src/query_param_models/tutorial002_an_py310.py hl[10] *}

もしクライアントが**クエリパラメータ**として**余分な**データを送ろうとすると、**エラー**レスポンスが返されます。

But in this case, if you could bring the 8 ex-cashier/cooks/now-cleaners, and each one of them (plus you) could take a zone of the house to clean it, you could do all the work in **parallel**, with the extra help, and finish much sooner.

In this scenario, each one of the cleaners (including you) would be a processor, doing their part of the job.

// to store the rest of the sparse map.
//
// The Header.Size does not reflect the size of any extended headers used.
// Thus, this function will read from the raw io.Reader to fetch extra headers.
// This method mutates blk in the process.
func (tr *Reader) readOldGNUSparseMap(hdr *Header, blk *block) (sparseDatas, error) {
	// Make sure that the input format is GNU.

Para distinguir entre los modelos con todos los valores opcionales para **actualizaciones** y modelos con valores requeridos para **creación**, puedes utilizar las ideas descritas en [Modelos Extra](extra-models.md).

	void _cgo_release_context(uintptr_t ctxt) { }
	char* _cgo_topofstack(void) { return (char*)0; }
	void _cgo_allocate(void *a, int c) { }
	void _cgo_panic(void *a, int c) { }
	void _cgo_reginit(void) { }

The extra functions here are stubs to satisfy the references in the C
code generated for gcc. The build process links this stub, along with
_cgo_export.c and *.cgo2.c, into a dynamic executable and then lets

///

## Zusätzliche Information hinzufügen { #add-extra-information }

Sie können zusätzliche Information in `Field`, `Query`, `Body`, usw. deklarieren. Und es wird im generierten JSON-Schema untergebracht.

Sie werden später in der Dokumentation mehr darüber lernen, wie man zusätzliche Information unterbringt, wenn Sie lernen, Beispiele zu deklarieren.

/// warning | Achtung

		has := int64(len(buf))
		if has >= n {
			return nil
		}
		if hasFull || n > size {
			return io.ErrUnexpectedEOF
		}
		extra := n - has
		if int64(cap(buf)) >= n {
			// Extend since we have enough space.
			buf = buf[:n]
		} else {
			buf = append(buf, make([]byte, extra)...)
		}
		_, err := io.ReadFull(r, buf[has:])
		if err != nil {
			if errors.Is(err, io.EOF) {
				// Returned if we read nothing.

					normKey, origKeys)
			}

			if len(origKeys[1:]) > 0 {
				// Log that extra DN mappings will not be imported.
				iamLogEvent(ctx, "import-ldap-normalize: extraneous DN mappings found for LDAP DN[%s]: %v will not be imported", origKeys[0], origKeys[1:])
			}

			// Policies mapped to the DN's are the same, so we remove the extra
			// ones from the map.
			for i := 1; i < len(origKeys); i++ {

Luego declara los parámetros de header usando la misma estructura que con `Path`, `Query` y `Cookie`.

Puedes definir el valor por defecto así como toda la validación extra o los parámetros de anotaciones:

{* ../../docs_src/header_params/tutorial001_an_py310.py hl[9] *}

/// note | Detalles Técnicos