## Пользовательский класс `APIRoute` в роутере { #custom-apiroute-class-in-a-router }

Вы также можете задать параметр `route_class` у `APIRouter`:

{* ../../docs_src/custom_request_and_route/tutorial003_py310.py hl[26] *}

## Classe `APIRoute` personalizada em um router { #custom-apiroute-class-in-a-router }

Você também pode definir o parâmetro `route_class` de uma `APIRouter`:

{* ../../docs_src/custom_request_and_route/tutorial003_py310.py hl[26] *}

## Clase personalizada `APIRoute` en un router { #custom-apiroute-class-in-a-router }

También puedes establecer el parámetro `route_class` de un `APIRouter`:

{* ../../docs_src/custom_request_and_route/tutorial003_py310.py hl[26] *}

## Custom `APIRoute` class in a router { #custom-apiroute-class-in-a-router }

You can also set the `route_class` parameter of an `APIRouter`:

{* ../../docs_src/custom_request_and_route/tutorial003_py310.py hl[26] *}

**FastAPI** stellt dasselbe `starlette.staticfiles` auch via `fastapi.staticfiles` bereit, als Annehmlichkeit für Sie, den Entwickler. Es kommt aber tatsächlich direkt von Starlette.

///

### Was ist „Mounten“ { #what-is-mounting }

„Mounten“ bedeutet das Hinzufügen einer vollständigen „unabhängigen“ Anwendung an einem bestimmten Pfad, die sich dann um die Handhabung aller Unterpfade kümmert.

///

### Add the callback router { #add-the-callback-router }

At this point you have the *callback path operation(s)* needed (the one(s) that the *external developer*  should implement in the *external API*) in the callback router you created above.

Now use the parameter `callbacks` in *your API's path operation decorator* to pass the attribute `.routes` (that's actually just a `list` of routes/*path operations*) from that callback router:

        if responses is None:
            responses = {}
        for route in router.routes:
            if isinstance(route, APIRoute):
                combined_responses = {**responses, **route.responses}
                use_response_class = get_value_or_default(
                    route.response_class,
                    router.default_response_class,
                    default_response_class,

///

### Подключите маршрутизатор обратного вызова { #add-the-callback-router }

К этому моменту у вас есть необходимые *операции пути* обратного вызова (те, которые *внешний разработчик* должен реализовать во *внешнем API*) в созданном выше маршрутизаторе обратных вызовов.

from fastapi.testclient import TestClient
from pydantic import BaseModel


def custom_generate_unique_id(route: APIRoute):
    return f"foo_{route.name}"


def custom_generate_unique_id2(route: APIRoute):
    return f"bar_{route.name}"


def custom_generate_unique_id3(route: APIRoute):
    return f"baz_{route.name}"


class Item(BaseModel):
    name: str
    price: float


class Message(BaseModel):

We are importing the submodule `items` directly, instead of importing just its variable `router`.

This is because we also have another variable named `router` in the submodule `users`.

If we had imported one after the other, like:

```Python
from .routers.items import router
from .routers.users import router
```