from fastapi import Depends, FastAPI, Security
from fastapi.security import APIKeyQuery
from fastapi.testclient import TestClient
from pydantic import BaseModel

app = FastAPI()

api_key = APIKeyQuery(name="key", description="API Key Query")


class User(BaseModel):
    username: str


def get_current_user(oauth_header: str = Security(api_key)):
    user = User(username=oauth_header)
    return user


@app.get("/users/me")

from fastapi import Depends, FastAPI, Security
from fastapi.security.open_id_connect_url import OpenIdConnect
from fastapi.testclient import TestClient
from pydantic import BaseModel

app = FastAPI()

oid = OpenIdConnect(
    openIdConnectUrl="/openid", description="OpenIdConnect security scheme"
)


class User(BaseModel):
    username: str


def get_current_user(oauth_header: str = Security(oid)):

{* ../../docs_src/security/tutorial002_an_py310.py hl[19:22,26:27] *}

## Внедрить текущего пользователя { #inject-the-current-user }

Теперь мы можем использовать тот же `Depends` с нашей `get_current_user` в *операции пути*:

{* ../../docs_src/security/tutorial002_an_py310.py hl[31] *}

Обратите внимание, что мы объявляем тип `current_user` как Pydantic-модель `User`.

import pytest
from fastapi import Depends, FastAPI, HTTPException
from fastapi.exceptions import RequestValidationError
from fastapi.testclient import TestClient
from starlette.responses import JSONResponse


def http_exception_handler(request, exception):
    return JSONResponse({"exception": "http-exception"})


def request_validation_exception_handler(request, exception):
    return JSONResponse({"exception": "request-validation"})

from typing import Annotated

from fastapi import Depends, FastAPI, HTTPException, Query
from sqlmodel import Field, Session, SQLModel, create_engine, select


class Hero(SQLModel, table=True):
    id: int | None = Field(default=None, primary_key=True)
    name: str = Field(index=True)
    age: int | None = Field(default=None, index=True)
    secret_name: str


sqlite_file_name = "database.db"
sqlite_url = f"sqlite:///{sqlite_file_name}"

from typing import Optional

from fastapi import Depends, FastAPI, Security
from fastapi.security import APIKeyQuery
from fastapi.testclient import TestClient
from pydantic import BaseModel

app = FastAPI()

api_key = APIKeyQuery(name="key", auto_error=False)


class User(BaseModel):
    username: str


def get_current_user(oauth_header: Optional[str] = Security(api_key)):
    if oauth_header is None:
        return None

from typing import Optional

from fastapi import Depends, FastAPI, Security
from fastapi.security import APIKeyCookie
from fastapi.testclient import TestClient
from pydantic import BaseModel

app = FastAPI()

api_key = APIKeyCookie(name="key", auto_error=False)


class User(BaseModel):
    username: str


def get_current_user(oauth_header: Optional[str] = Security(api_key)):
    if oauth_header is None:
        return None

/// info | Технические детали

`Security` на самом деле является подклассом `Depends` и имеет всего один дополнительный параметр, который мы рассмотрим позже.

Но используя `Security` вместо `Depends`, **FastAPI** будет знать, что можно объявлять security scopes, использовать их внутри и документировать API в OpenAPI.

///

### `Depends` 불러오기

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

### "의존자"에 의존성 명시하기

*경로 작동 함수*의 매개변수로 `Body`, `Query` 등을 사용하는 방식과 같이 새로운 매개변수로 `Depends`를 사용합니다:

{* ../../docs_src/dependencies/tutorial001_an_py310.py hl[13,18] *}

비록 `Body`, `Query` 등을 사용하는 것과 같은 방식으로 여러분의 함수의 매개변수에 있는 `Depends`를 사용하지만, `Depends`는 약간 다르게 작동합니다.

`Depends`에 단일 매개변수만 전달했습니다.

from typing import Annotated, Union

from fastapi import Depends, FastAPI, HTTPException, Query
from sqlmodel import Field, Session, SQLModel, create_engine, select


class Hero(SQLModel, table=True):
    id: Union[int, None] = Field(default=None, primary_key=True)
    name: str = Field(index=True)
    age: Union[int, None] = Field(default=None, index=True)
    secret_name: str


sqlite_file_name = "database.db"