///

## Déclarer des métadonnées

Vous pouvez déclarer les mêmes paramètres que pour `Query`.

Par exemple, pour déclarer une valeur de métadonnée `title` pour le paramètre de chemin `item_id`, vous pouvez écrire :

{* ../../docs_src/path_params_numeric_validations/tutorial001_an_py310.py hl[10] *}

/// note

///

## Declare metadados { #declare-metadata }

Você pode declarar todos os mesmos parâmetros que em `Query`.

Por exemplo, para declarar um valor de metadado `title` para o parâmetro de path `item_id` você pode digitar:

{* ../../docs_src/path_params_numeric_validations/tutorial001_an_py310.py hl[10] *}

/// note | Nota

from typing import Union

from fastapi import FastAPI


@dataclass
class Item:
    name: str
    price: float
    tags: list[str] = field(default_factory=list)
    description: Union[str, None] = None
    tax: Union[float, None] = None


app = FastAPI()


@app.get("/items/next", response_model=Item)
async def read_next_item():
    return {
        "name": "Island In The Moon",

Pythonのformat文字列と同様のシンタックスで「パスパラメータ」や「パス変数」を宣言できます:

{* ../../docs_src/path_params/tutorial001.py hl[6,7] *}

パスパラメータ `item_id` の値は、引数 `item_id` として関数に渡されます。

しがたって、この例を実行して <a href="http://127.0.0.1:8000/items/foo" class="external-link" target="_blank">http://127.0.0.1:8000/items/foo</a> にアクセスすると、次のレスポンスが表示されます。

```JSON
{"item_id":"foo"}
```

## パスパラメータと型

標準のPythonの型アノテーションを使用して、関数内のパスパラメータの型を宣言できます:

    url: HttpUrl
    name: str


class Item(BaseModel):
    name: str
    description: Union[str, None] = None
    price: float
    tax: Union[float, None] = None
    tags: set[str] = set()
    images: Union[list[Image], None] = None


class Offer(BaseModel):
    name: str
    description: Union[str, None] = None
    price: float
    items: list[Item]


@app.post("/offers/")

```JSON
{
  "item": "The Foo Wrestlers"
}
```

But if the client requests `http://example.com/items/bar` (a non-existent `item_id` `"bar"`), that client will receive an HTTP status code of 404 (the "not found" error), and a JSON response of:

```JSON
{
  "detail": "Item not found"
}
```

/// tip

When raising an `HTTPException`, you can pass any value that can be converted to JSON as the parameter `detail`, not only `str`.

Если клиент запросит `http://example.com/items/foo` (`item_id` `"foo"`), то он получит статус-код 200 и ответ в формате JSON:

```JSON
{
  "item": "The Foo Wrestlers"
}
```

Но если клиент запросит `http://example.com/items/bar` (несуществующий `item_id` `"bar"`), то он получит статус-код 404 (ошибка "не найдено") и JSON-ответ в виде:

```JSON
{
  "detail": "Item not found"
}
```

/// tip | Подсказка

	// the last result index sent to client
	lastSentResultIndex int64

	// Number of total items scanned against item type
	scannedItemsMap map[madmin.HealItemType]int64

	// Number of total items healed against item type
	healedItemsMap map[madmin.HealItemType]int64

	// Number of total items where healing failed against item type
	healFailedItemsMap map[madmin.HealItemType]int64

	// The time of the last scan/heal activity

    return x_key


app = FastAPI(dependencies=[Depends(verify_token), Depends(verify_key)])


@app.get("/items/")
async def read_items():
    return [{"item": "Portal Gun"}, {"item": "Plumbus"}]


@app.get("/users/")
async def read_users():

    client = TestClient(mod.app)
    access_token = get_access_token(client=client)
    response = client.get(
        "/users/me/items/", headers={"Authorization": f"Bearer {access_token}"}
    )
    assert response.status_code == 200, response.text
    assert response.json() == [{"item_id": "Foo", "owner": "johndoe"}]


def test_openapi_schema(mod: ModuleType):
    client = TestClient(mod.app)