@app.get("/optional-alias")
async def read_optional_alias(
    p: Annotated[Optional[str], Query(alias="p_alias")] = None,
):
    return {"p": p}


class QueryModelOptionalAlias(BaseModel):
    p: Optional[str] = Field(None, alias="p_alias")


@app.get("/model-optional-alias")
async def read_model_optional_alias(p: Annotated[QueryModelOptionalAlias, Query()]):
    return {"p": p.p}


@pytest.mark.parametrize(
    "path",

                                "title": "Q",
                            },
                            "name": "q",
                            "in": "query",
                        },
                        {
                            "required": False,
                            "schema": {
                                "title": "Skip",

Вы можете задать параметры Cookie таким же способом, как `Query` и `Path` параметры.

## Импорт `Cookie` { #import-cookie }

Сначала импортируйте `Cookie`:

{* ../../docs_src/cookie_params/tutorial001_an_py310.py hl[3] *}

## Объявление параметров `Cookie` { #declare-cookie-parameters }

Затем объявляйте параметры cookie, используя ту же структуру, что и с `Path` и `Query`.

from fastapi import Cookie, FastAPI, Header, Query
from fastapi.testclient import TestClient
from pydantic import BaseModel

app = FastAPI()


class Model(BaseModel):
    param: str

    model_config = {"extra": "allow"}


@app.get("/query")
async def query_model_with_extra(data: Model = Query()):
    return data


@app.get("/header")
async def header_model_with_extra(data: Model = Header()):
    return data

        "components": {
            "securitySchemes": {
                "APIKeyQuery": {
                    "type": "apiKey",
                    "name": "key",
                    "in": "query",
                    "description": "API Key Query",
                }
            }
        },

from typing import Annotated, Union

from fastapi import FastAPI, Query

app = FastAPI()


@app.get("/items/")
async def read_items(
    q: Annotated[
        Union[str, None],
        Query(
            alias="item-query",
            title="Query string",
            description="Query string for the items to search in the database that have a good match",
            min_length=3,
            max_length=50,

from typing import Union

from fastapi import FastAPI, Query

app = FastAPI()


@app.get("/items/")
async def read_items(
    q: Union[str, None] = Query(
        default=None,
        alias="item-query",
        title="Query string",
        description="Query string for the items to search in the database that have a good match",
        min_length=3,
        max_length=50,
        pattern="^fixedquery$",
        deprecated=True,

`Field` 的工作方式和 `Query`、`Path`、`Body` 相同，参数也相同。

/// note | 技术细节

实际上，`Query`、`Path` 都是 `Params` 的子类，而 `Params` 类又是 Pydantic 中 `FieldInfo` 的子类。

Pydantic 的 `Field` 返回也是 `FieldInfo` 的类实例。

`Body` 直接返回的也是 `FieldInfo` 的子类的对象。后文还会介绍一些 `Body` 的子类。

注意，从 `fastapi` 导入的 `Query`、`Path` 等对象实际上都是返回特殊类的函数。

///

/// tip | 提示

注意，模型属性的类型、默认值及 `Field` 的代码结构与*路径操作函数*的参数相同，只不过是用 `Field` 替换了`Path`、`Query`、`Body`。

///

## 添加更多信息

            cb.query().setContent_Wildcard(wrapQuery(relatedContentPager.content));
        }
        // TODO Long, Integer, String supported only.

        // setup condition
        cb.query().addOrderBy_Term_Asc();
        cb.query().addOrderBy_CreatedTime_Asc();

        // search

    }

    /**
     * Retrieves a list of all available related content entities.

            op.setRefreshPolicy(Constants.TRUE);
        });

    }

    /**
     * Sets up the database query conditions for retrieving request headers based on pager criteria.
     *
     * @param cb the condition bean for building the database query
     * @param requestHeaderPager the pager containing search and filter criteria
     */