И если вы посмотрите на итоговый OpenAPI (по адресу `/openapi.json` вашего API), вы также увидите своё расширение в составе описания соответствующей *операции пути*:

```JSON hl_lines="22"
{
    "openapi": "3.1.0",
    "info": {
        "title": "FastAPI",
        "version": "0.1.0"
    },
    "paths": {
        "/items/": {
            "get": {

   * </ul>
   *
   * <p>This escaper is suitable for escaping parameter names and values even when <a
   * href="https://www.w3.org/TR/html401/appendix/notes.html#h-B.2.2">using the non-standard
   * semicolon</a>, rather than the ampersand, as a parameter delimiter. Nevertheless, we recommend
   * using the ampersand unless you must interoperate with systems that require semicolons.
   *

                      rangeMap.put(entry.getKey(), entry.getValue());
                    }
                    return rangeMap.subRangeMap(Range.atMost(22)).asMapOfRanges();
                  }

                  @SuppressWarnings("unchecked")
                  @Override
                  public Entry<Range<Integer>, String>[] createArray(int length) {

{* ../../docs_src/response_model/tutorial003_py310.py hl[24] *}

...hemos declarado el `response_model` para ser nuestro modelo `UserOut`, que no incluye la contraseña:

{* ../../docs_src/response_model/tutorial003_py310.py hl[22] *}

Entonces, **FastAPI** se encargará de filtrar todos los datos que no estén declarados en el modelo de salida (usando Pydantic).

### `response_model` o Tipo de Retorno { #response-model-or-return-type }

            assertThrows(CIFSException.class, () -> ctx.initSecContext(buf, 3, 1));
            assertThrows(CIFSException.class, () -> ctx.initSecContext(buf, 2, 2));
        }

        @Test
        @DisplayName("initSecContext null token edge cases")
        void testInitSecContextNullToken() throws Exception {

여기서 *경로 작동 함수*가 비밀번호를 포함하는 동일한 입력 사용자를 반환할지라도:

{* ../../docs_src/response_model/tutorial003.py hl[24] *}

...`response_model`을 `UserOut` 모델로 선언했기 때문에 비밀번호를 포함하지 않습니다:

{* ../../docs_src/response_model/tutorial003.py hl[22] *}

따라서 **FastAPI**는 출력 모델에서 선언하지 않은 모든 데이터를 (Pydantic을 사용하여) 필터링합니다.

## 문서에서 보기

자동 생성 문서를 보면 입력 모델과 출력 모델이 각자의 JSON 스키마를 가지고 있음을 확인할 수 있습니다:

<img src="/img/tutorial/response-model/image01.png">

pkg debug/dwarf, const AttrDefaultValue = 30
pkg debug/dwarf, const AttrDescription = 90
pkg debug/dwarf, const AttrDiscr = 21
pkg debug/dwarf, const AttrDiscrList = 61
pkg debug/dwarf, const AttrDiscrValue = 22
pkg debug/dwarf, const AttrEncoding = 62
pkg debug/dwarf, const AttrEntrypc = 82
pkg debug/dwarf, const AttrExtension = 84
pkg debug/dwarf, const AttrExternal = 63
pkg debug/dwarf, const AttrFrameBase = 64

	// updates
	user = &User{Name: "bar", Age: 22}
	user.CreatedAt = date
	user.UpdatedAt = date
	sql = DB.ToSQL(func(tx *gorm.DB) *gorm.DB {
		return tx.Model(&User{}).Where("id = ?", 100).Updates(user)
	})
	assertEqualSQL(t, `UPDATE "users" SET "created_at"='2021-10-18 00:00:00',"updated_at"='2021-10-18 19:50:09.438',"name"='bar',"age"=22 WHERE id = 100 AND "users"."deleted_at" IS NULL`, sql)

	// update

      |Content-Type: text/plain; charset=utf-8
      |
      |okay
      |--AaB03x
      |Content-Disposition: form-data; name="field with %22"
      |
      |"
      |--AaB03x
      |Content-Disposition: form-data; name="field with %22"
      |
      |%22
      |--AaB03x
      |Content-Disposition: form-data; name="field with ~"
      |

Auf diese Weise können wir nur die Unterschiede zwischen den Modellen (mit Klartext-`password`, mit `hashed_password` und ohne Passwort) deklarieren:

{* ../../docs_src/extra_models/tutorial002_py310.py hl[7,13:14,17:18,21:22] *}

## `Union` oder `anyOf` { #union-or-anyof }