// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful

// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful

// Copyright (c) 2015-2023 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful

// Copyright (c) 2015-2023 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful

      --disable-libunwind-exceptions \
      --disable-lto \
      --disable-multilib \
      --enable-__cxa_atexit \
      --enable-gnu-indirect-function \
      --enable-gnu-unique-object \
      --enable-initfini-array \
      --enable-languages="c,c++" \
      --enable-linker-build-id \
      --enable-plugin \
      --enable-shared \
      --enable-threads=posix \

クエリパラメータの宣言と同様に、モデル属性がデフォルト値を持つ場合は必須ではありません。そうでなければ必須です。単にオプションにするには `None` を使用してください。

例えば、上記のモデルは次のようなJSON「`object`」（またはPythonの `dict`）を宣言します:

```JSON
{
    "name": "Foo",
    "description": "An optional description",
    "price": 45.2,
    "tax": 3.5
}
```

...`description` と `tax` はオプション（デフォルト値が `None`）なので、このJSON「`object`」も有効です:

```JSON
{
    "name": "Foo",
    "price": 45.2
}
```

## Pydantic 기능 { #pydantic-features }

**FastAPI**는 [**Pydantic**](https://docs.pydantic.dev/)과 완벽하게 호환되며(또한 이를 기반으로 합니다). 따라서 추가로 가지고 있는 Pydantic 코드도 모두 동작합니다.

데이터베이스를 위한 <abbr title="Object-Relational Mapper - 객체-관계 매퍼">ORM</abbr>, <abbr title="Object-Document Mapper - 객체-문서 매퍼">ODM</abbr>과 같은, Pydantic을 기반으로 하는 외부 라이브러리도 포함합니다.

이는 모든 것이 자동으로 검증되기 때문에, 많은 경우 요청에서 얻은 동일한 객체를 **직접 데이터베이스로** 넘겨줄 수 있다는 의미이기도 합니다.

					}
					this._values[id] = v;
					this._goRefCounts[id] = 0;
					this._ids.set(v, id);
				}
				this._goRefCounts[id]++;
				let typeFlag = 0;
				switch (typeof v) {
					case "object":
						if (v !== null) {
							typeFlag = 1;
						}
						break;
					case "string":
						typeFlag = 2;
						break;
					case "symbol":
						typeFlag = 3;
						break;

**FastAPI** sait quoi faire dans chaque cas et comment réutiliser le même objet, afin que toutes les tâches d'arrière-plan soient fusionnées et que les tâches soient ensuite exécutées en arrière-plan :

{* ../../docs_src/background_tasks/tutorial002_an_py310.py hl[13,15,22,25] *}

     * Creates an EditBody from a StemmerOverrideItem entity for API responses.
     *
     * @param entity the StemmerOverrideItem entity to convert
     * @param dictId the dictionary ID
     * @return the converted EditBody object
     */
    protected EditBody createEditBody(final StemmerOverrideItem entity, final String dictId) {
        final EditBody body = new EditBody();
        body.id = entity.getId();
        body.dictId = dictId;