from typing import Literal

from fastapi import FastAPI, Query
from pydantic import BaseModel, Field

app = FastAPI()


class FilterParams(BaseModel):
    model_config = {"extra": "forbid"}

    limit: int = Field(100, gt=0, le=100)
    offset: int = Field(0, ge=0)
    order_by: Literal["created_at", "updated_at"] = "created_at"
    tags: list[str] = []


@app.get("/items/")

from typing import Union

from fastapi import Cookie, FastAPI
from pydantic import BaseModel

app = FastAPI()


class Cookies(BaseModel):
    model_config = {"extra": "forbid"}

    session_id: str
    fatebook_tracker: Union[str, None] = None
    googall_tracker: Union[str, None] = None


@app.get("/items/")
async def read_items(cookies: Cookies = Cookie()):

from typing import Literal

from fastapi import FastAPI, Query
from pydantic import BaseModel, Field

app = FastAPI()


class FilterParams(BaseModel):
    model_config = {"extra": "forbid"}

    limit: int = Field(100, gt=0, le=100)
    offset: int = Field(0, ge=0)
    order_by: Literal["created_at", "updated_at"] = "created_at"
    tags: list[str] = []


@app.get("/items/")

from fastapi import FastAPI, Header
from pydantic import BaseModel

app = FastAPI()


class CommonHeaders(BaseModel):
    model_config = {"extra": "forbid"}

    host: str
    save_data: bool
    if_modified_since: str | None = None
    traceparent: str | None = None
    x_tag: list[str] = []


@app.get("/items/")
async def read_items(headers: CommonHeaders = Header()):

이제 API는 자신의 <abbr title="농담입니다, 혹시나 해서요. 쿠키 동의와 관련해서 할 수 있는 것은 없지만, 이제 API조차도 잘못된 쿠키를 거부할 수 있다는 점이 재밌습니다. 쿠키 드세요. 🍪">쿠키 동의</abbr>를 제어할 수 있는 권한을 갖게 되었습니다. 🤪🍪

Pydantic의 모델 구성을 사용하여 추가(`extra`) 필드를 금지(`forbid`)할 수 있습니다:

{* ../../docs_src/cookie_param_models/tutorial002_an_py39.py hl[10] *}

클라이언트가 **추가 쿠키**를 보내려고 시도하면, **오류** 응답을 받게 됩니다.

from typing import Annotated

from fastapi import FastAPI, Header
from pydantic import BaseModel

app = FastAPI()


class CommonHeaders(BaseModel):
    model_config = {"extra": "forbid"}

    host: str
    save_data: bool
    if_modified_since: str | None = None
    traceparent: str | None = None
    x_tag: list[str] = []


@app.get("/items/")
async def read_items(headers: Annotated[CommonHeaders, Header()]):

from typing import Union

from fastapi import FastAPI, Header
from pydantic import BaseModel

app = FastAPI()


class CommonHeaders(BaseModel):
    model_config = {"extra": "forbid"}

    host: str
    save_data: bool
    if_modified_since: Union[str, None] = None
    traceparent: Union[str, None] = None
    x_tag: list[str] = []


@app.get("/items/")
async def read_items(headers: CommonHeaders = Header()):

<div class="screenshot">
<img src="/img/tutorial/query-param-models/image01.png">
</div>

## 余分なクエリパラメータを禁止する

特定の（あまり一般的ではないかもしれない）ケースで、受け付けるクエリパラメータを**制限**する必要があるかもしれません。

Pydanticのモデルの Configuration を利用して、 `extra` フィールドを `forbid` とすることができます。

{* ../../docs_src/query_param_models/tutorial002_an_py310.py hl[10] *}

もしクライアントが**クエリパラメータ**として**余分な**データを送ろうとすると、**エラー**レスポンスが返されます。

例えば、クライアントがクエリパラメータ `tool` に、値 `plumbus` を設定して送ろうとすると:

在某些特殊使用情况下（可能并不常见），您可能希望**限制**您想要接收的 cookie。

您的 API 现在可以控制自己的 <abbr title="顺带一提，这是一个笑话。它与 cookie 同意无关，但现在连API都能拒绝那些可怜的 cookie，真是太有意思了。来，吃块小饼干（cookie）吧。🍪">cookie 同意</abbr>。🤪🍪

您可以使用 Pydantic 的模型配置来禁止（ `forbid` ）任何额外（ `extra` ）字段：

{* ../../docs_src/cookie_param_models/tutorial002_an_py39.py hl[10] *}

如果客户尝试发送一些**额外的 cookie**，他们将收到**错误**响应。

可怜的 cookie 通知条，费尽心思为了获得您的同意，却被<abbr title="这又是一个笑话，别管我了，给您的小饼干（cookie）配上点咖啡吧。☕">API 拒绝了</abbr>。🍪

from typing import Annotated, Union

from fastapi import FastAPI, Header
from pydantic import BaseModel

app = FastAPI()


class CommonHeaders(BaseModel):
    model_config = {"extra": "forbid"}

    host: str
    save_data: bool
    if_modified_since: Union[str, None] = None
    traceparent: Union[str, None] = None
    x_tag: list[str] = []


@app.get("/items/")