Also, the best approach was to use already existing standards.

So, before even starting to code **FastAPI**, I spent several months studying the specs for OpenAPI, JSON Schema, OAuth2, etc. Understanding their relationship, overlap, and differences.

## Design { #design }

Then I spent some time designing the developer "API" I wanted to have as a user (as a developer using FastAPI).

Ayrıca, en iyi yaklaşım zaten mevcut olan standartları kullanmaktı.

Sonuç olarak, **FastAPI**'ı kodlamaya başlamadan önce, birkaç ay boyunca OpenAPI, JSON Schema, OAuth2 ve benzerlerinin tanımlamalarını inceledim. İlişkilerini, örtüştükleri noktaları ve farklılıklarını anlamaya çalıştım.

## Tasarım

{* ../../docs_src/body_nested_models/tutorial005_py310.py hl[2,8] *}

Es wird getestet, ob der String eine gültige URL ist, und als solche wird er in JSON Schema / OpenAPI dokumentiert.

## Attribute mit Listen von Kindmodellen

Sie können Pydantic-Modelle auch als Typen innerhalb von `list`, `set`, usw. verwenden:

/src/main/webapp/WEB-INF/logs/fess*
/.settings/
.project
.classpath
*.iml
.idea
.vscode
.DS_Store
/plugins/
/modules/
/tomcat.8080/
dbflute_fess/output/doc/lastadoc-fess.html
dbflute_fess/schema/project-lastadoc-fess.json
src/main/resources/fess_indices/fess_config.access_token/access_token.bulk
src/main/resources/ga_client_secrets.p12
src/main/webapp/WEB-INF/project.properties
/.apt_generated/
/.apt_generated_tests/

<?xml version="1.0" encoding="UTF-8" ?>
<eef>
	<config Schema="2.0" EnterpriseVersion="'7.6.50'">
		<collections Count="3">
			<collection Name="fess">
				<bad_urls><![CDATA[
https://fess.codelibs.org/images/
              ]]></bad_urls>
				<good_urls><![CDATA[
https://fess.codelibs.org/
https://www.codelibs.org/
              ]]></good_urls>
				<prerequisite_results><![CDATA[
20
              ]]></prerequisite_results>

<div class="screenshot">
<img src="/img/tutorial/separate-openapi-schemas/image03.png">
</div>

### Modelo para Entrada y Salida en la Documentación

Y si revisas todos los esquemas disponibles (JSON Schemas) en OpenAPI, verás que hay dos, uno `Item-Input` y uno `Item-Output`.

Para `Item-Input`, `description` **no es requerido**, no tiene un asterisco rojo.

* Eine <a href="https://json-schema.org" class="external-link" target="_blank">JSON Schema</a> Definition für Ihr Modell generieren, welche Sie überall sonst verwenden können, wenn es für Ihr Projekt Sinn macht.
* Diese Schemas werden Teil des generierten OpenAPI-Schemas und werden von den <abbr title="User Interface – Benutzeroberfläche">UIs</abbr> der automatischen Dokumentation verwendet.

#  limitations under the License.
#

# https://docs.github.com/en/communities/using-templates-to-encourage-useful-issues-and-pull-requests/syntax-for-githubs-form-schema

name: Feature request
description: File a proposal for new feature, improvement
labels: ["enhancement"]

body:
  - type: markdown
    attributes:
      value: |

    * <a href="https://fastapi.tiangolo.com/features/" class="external-link" target="_blank">**Et bien d'autres fonctionnalités**</a> comme la validation automatique, la sérialisation, l'authentification avec OAuth2...

Il effectue également la validation des données (même imbriquées les unes dans les autres), et permet de les documenter correctement (schéma OpenAPI et documentation auto-générée).

## Valeurs scalaires dans le body