/// tip | Dica

Observe que, assim como [dependências em *decoradores de operação de rota*](dependencies/dependencies-in-path-operation-decorators.md){.internal-link target=_blank}, nenhum valor será passado para sua *função de operação de rota*.

///

O resultado final é que os caminhos dos itens agora são:

    * Zuerst werden die Router-Abhängigkeiten ausgeführt, dann die [`dependencies` im Dekorator](dependencies/dependencies-in-path-operation-decorators.md){.internal-link target=_blank} und dann die normalen Parameterabhängigkeiten.

## Additional Response with `model` { #additional-response-with-model }

You can pass to your *path operation decorators* a parameter `responses`.

It receives a `dict`: the keys are status codes for each response (like `200`), and the values are other `dict`s with the information for each of them.

## `Security` en `dependencies` del decorador { #security-in-decorator-dependencies }

/// tip | Подсказка

Обратите внимание, что также, как и в случае с зависимостями в декораторах *эндпоинтов* ([зависимости в декораторах операций пути](dependencies/dependencies-in-path-operation-decorators.md){.internal-link target=_blank}), никакого значения в *функцию эндпоинта* передано не будет.

///

В результате мы получим следующие эндпоинты:

* `/items/`
* `/items/{item_id}`

我们还可以添加一个 `tags` 列表和额外的 `responses` 列表，这些参数将应用于此路由器中包含的所有*路径操作*。

我们可以添加一个 `dependencies` 列表，这些依赖项将被添加到路由器中的所有*路径操作*中，并将针对向它们发起的每个请求执行/解决。

/// tip

请注意，和[*路径操作装饰器*中的依赖项](dependencies/dependencies-in-path-operation-decorators.md){.internal-link target=_blank}很类似，没有值会被传递给你的*路径操作函数*。

///

最终结果是项目相关的路径现在为：

* `/items/`
* `/items/{item_id}`

...如我们所愿。

* 它们将被标记为仅包含单个字符串 `"items"` 的标签列表。

You put it on top of a function. Like a pretty decorative hat (I guess that's where the term came from).

A "decorator" takes the function below and does something with it.

In our case, this decorator tells **FastAPI** that the function below corresponds to the **path** `/` with an **operation** `get`.

It is the "**path operation decorator**".

///

You can also use the other operations:

## `Security` in Dekorator-`dependencies` { #security-in-decorator-dependencies }

## `Security` в параметре `dependencies` декоратора { #security-in-decorator-dependencies }

compilation to JavaScript, it cannot rely on the types to define validation, serialization and documentation at the same time. Due to this and some design decisions, to get validation, serialization and automatic schema generation, it's needed to add decorators in many places. So, it becomes quite verbose.

It can't handle nested models very well. So, if the JSON body in the request is a JSON object that has inner fields that in turn are nested JSON objects, it cannot be properly documented and...