* Генерирует декларативное описание модели в виде <a href="https://json-schema.org" class="external-link" target="_blank">JSON Schema</a>, так что вы можете его использовать где угодно, если это имеет значение для вашего проекта.

_site_packages_dirs += [p for p in _sys.path if "site-packages" in p]
if "getsitepackages" in dir(_site):
  _site_packages_dirs += _site.getsitepackages()

for _scheme in sysconfig.get_scheme_names():
  for _name in ["purelib", "platlib"]:
    _site_packages_dirs += [sysconfig.get_path(_name, _scheme)]

_site_packages_dirs = list(set(_site_packages_dirs))

# Find the location of this exact file.

 * As policy, implementations of this interface are responsible for selecting which cookies to
 * accept and which to reject. A reasonable policy is to reject all cookies, though that may
 * interfere with session-based authentication schemes that require cookies.
 *
 * As persistence, implementations of this interface must also provide storage of cookies. Simple
 * implementations may store cookies in memory; sophisticated ones may use the file system or

///

## Documents OpenAPI et API

Si vous renvoyez directement des codes HTTP et des réponses supplémentaires, ils ne seront pas inclus dans le schéma OpenAPI (la documentation de l'API), car FastAPI n'a aucun moyen de savoir à l'avance ce que vous allez renvoyer.

package schema

import (
	"gorm.io/gorm/clause"
)

// ConstraintInterface database constraint interface
type ConstraintInterface interface {
	GetName() string
	Build() (sql string, vars []interface{})
}

// GormDataTypeInterface gorm data type interface
type GormDataTypeInterface interface {
	GormDataType() string
}

// FieldNewValuePool field new scan value pool
type FieldNewValuePool interface {
	Get() interface{}

* 使用 <a href="https://json-schema.org/" class="external-link" target="_blank"><strong>JSON Schema</strong></a>（因為 OpenAPI 本身就是基於 JSON Schema）自動生成資料模型文件。
* 經過縝密的研究後圍繞這些標準進行設計，而不是事後在已有系統上附加的一層功能。
* 這也讓我們在多種語言中可以使用自動**用戶端程式碼生成**。

### 能夠自動生成文件

///

FastAPI will now:

* **Validate** the data making sure that the max length is 50 characters
* Show a **clear error** for the client when the data is not valid
* **Document** the parameter in the OpenAPI schema *path operation* (so it will show up in the **automatic docs UI**)

## Alternative (old): `Query` as the default value { #alternative-old-query-as-the-default-value }

* Add a **JSON Schema** for the response, in the OpenAPI *path operation*.
    * This will be used by the **automatic docs**.
    * It will also be used by automatic client code generation tools.

But most importantly:

Тогда, подразумеваются атрибуты JSON, их типы данных и т.п.

#### OpenAPI и JSON Schema

OpenAPI описывает схему API. Эта схема содержит определения (или "схемы") данных, отправляемых и получаемых API. Для описания структуры данных в JSON используется стандарт **JSON Schema**.

#### Рассмотрим `openapi.json`

## OpenAPI-Metadaten – Dokumentation

Um Metadaten zu Ihrem OpenAPI-Schema hinzuzufügen, einschließlich einer Lizenz, Version, Kontakt, usw., lesen Sie die Dokumentation unter [Tutorial – Metadaten und URLs der Dokumentationen](../tutorial/metadata.md){.internal-link target=_blank}.