El usuario de tu API (un desarrollador externo) creará una factura en tu API con un request POST.

Luego tu API (imaginemos):

* Enviará la factura a algún cliente del desarrollador externo.
* Recogerá el dinero.
* Enviará una notificación de vuelta al usuario de la API (el desarrollador externo).

Mas é possível personalizá-los, você pode definir um CDN específico ou providenciar os arquivos você mesmo.

## CDN Personalizado para JavaScript e CSS { #custom-cdn-for-javascript-and-css }

But there are specific cases where it's useful to get the `Request` object.

## Use the `Request` object directly { #use-the-request-object-directly }

Let's imagine you want to get the client's IP address/host inside of your *path operation function*.

For that you need to access the request directly.

{* ../../docs_src/using_request_directly/tutorial001_py39.py hl[1,7:8] *}

/// tip

Keep in mind that JSON only supports `str` as keys.

But Pydantic has automatic data conversion.

This means that, even though your API clients can only send strings as keys, as long as those strings contain pure integers, Pydantic will convert them and validate them.

And the `dict` you receive as `weights` will actually have `int` keys and `float` values.

///

            * **FastAPI** adds a reference here to the global JSON Schemas in another place in your OpenAPI instead of including it directly. This way, other applications and clients can use those JSON Schemas directly, provide better code generation tools, etc.

///

The generated responses in the OpenAPI for this *path operation* will be:

```JSON hl_lines="3-12"
{
    "responses": {

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.cling.invoker.mvnup.goals;

import java.util.ArrayList;
import java.util.List;

import eu.maveniverse.domtrip.Document;
import eu.maveniverse.domtrip.Editor;

/**
 * Builder for creating test POM documents with fluent API.
 */
public class PomBuilder {

    private String modelVersion = "4.0.0";

# Archivos de Request { #request-files }

Puedes definir archivos que serán subidos por el cliente utilizando `File`.

/// info | Información

Para recibir archivos subidos, primero instala <a href="https://github.com/Kludex/python-multipart" class="external-link" target="_blank">`python-multipart`</a>.

Asegúrate de crear un [entorno virtual](../virtual-environments.md){.internal-link target=_blank}, activarlo y luego instalarlo, por ejemplo:

```console

            * **FastAPI** ajoute ici une référence aux schémas JSON globaux à un autre endroit de votre OpenAPI au lieu de l'inclure directement. De cette façon, d'autres applications et clients peuvent utiliser ces schémas JSON directement, fournir de meilleurs outils de génération de code, etc.

///

Les réponses générées au format OpenAPI pour cette *opération de chemin* seront :

```JSON hl_lines="3-12"
{

		addressURL = scheme + "://" + n.Token + "@" + n.Address.String()
	} else {
		addressURL = scheme + "://" + n.Address.String()
	}

	u, err := uuid.NewRandom()
	if err != nil {
		return nil, err
	}
	clientID := u.String()

	connOpts := []stan.Option{stan.NatsURL(addressURL)}
	if n.Streaming.MaxPubAcksInflight > 0 {
		connOpts = append(connOpts, stan.MaxPubAcksInflight(n.Streaming.MaxPubAcksInflight))
	}

    - advanced/testing-dependencies.md
    - advanced/async-tests.md
    - advanced/settings.md
    - advanced/openapi-callbacks.md
    - advanced/openapi-webhooks.md
    - advanced/wsgi.md
    - advanced/generate-clients.md
  - fastapi-cli.md
  - Deployment:
    - deployment/index.md
    - deployment/versions.md
    - deployment/fastapicloud.md
    - deployment/https.md
    - deployment/manually.md