checker(q="somequery")
```

...and pass whatever that returns as the value of the dependency in our *path operation function* as the parameter `fixed_content_included`:

{* ../../docs_src/dependencies/tutorial011_an_py39.py hl[22] *}

/// tip

All this might seem contrived. And it might not be very clear how is it useful yet.

These examples are intentionally simple, but show how it all works.

这样，即便我们的*路径操作函数*将会返回包含密码的相同输入用户：

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

...我们已经将 `response_model` 声明为了不包含密码的 `UserOut` 模型：

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

因此，**FastAPI** 将会负责过滤掉未在输出模型中声明的所有数据（使用 Pydantic）。

## 在文档中查看

当你查看自动化文档时，你可以检查输入模型和输出模型是否都具有自己的 JSON Schema：

<img src="https://fastapi.tiangolo.com/img/tutorial/response-model/image01.png">

{
    "name": "Foo",
    "description": "The pretender",
    "price": 42.0,
    "tax": 3.2
}
```

하지만, 다중 본문 매개변수 역시 선언할 수 있습니다. 예. `item`과 `user`:

{* ../../docs_src/body_multiple_params/tutorial002.py hl[22] *}

이 경우에, **FastAPI**는 이 함수 안에 한 개 이상의 본문 매개변수(Pydantic 모델인 두 매개변수)가 있다고 알 것입니다.

그래서, 본문의 매개변수 이름을 키(필드 명)로 사용할 수 있고, 다음과 같은 본문을 예측합니다:

```JSON
{
    "item": {
        "name": "Foo",

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

    // Check with modifiable copies of the list
    new PeekingIteratorTester<T>(list).test();

    // Check with unmodifiable lists
    new IteratorTester<T>(
        list.size() * 2 + 2, UNMODIFIABLE, list, IteratorTester.KnownOrder.KNOWN_ORDER) {
      @Override
      protected Iterator<T> newTargetIterator() {
        Iterator<T> iterator = unmodifiableList(list).iterator();

   * </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.
   *

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.
   *

checker(q="somequery")
```

...y pasará lo que eso retorne como el valor de la dependencia en nuestra *path operation function* como el parámetro `fixed_content_included`:

{* ../../docs_src/dependencies/tutorial011_an_py39.py hl[22] *}

/// tip | Consejo

Todo esto podría parecer complicado. Y puede que no esté muy claro cómo es útil aún.

Estos ejemplos son intencionalmente simples, pero muestran cómo funciona todo.

	// 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