from fastapi import FastAPI, Form
from pydantic import BaseModel

app = FastAPI()


class FormData(BaseModel):
    username: str
    password: str


@app.post("/login/")
async def login(data: FormData = Form()):

from typing import Annotated

from fastapi import FastAPI, Form
from pydantic import BaseModel

app = FastAPI()


class FormData(BaseModel):
    username: str
    password: str


@app.post("/login/")
async def login(data: Annotated[FormData, Form()]):

from typing import Annotated

from fastapi import FastAPI, Form
from pydantic import BaseModel

app = FastAPI()


class FormData(BaseModel):
    username: str
    password: str
    model_config = {"extra": "forbid"}


@app.post("/login/")
async def login(data: Annotated[FormData, Form()]):

        single_not_embedded_field
        and lenient_issubclass(first_field.field_info.annotation, BaseModel)
        and isinstance(received_body, FormData)
    ):
        fields_to_extract = get_cached_model_fields(first_field.field_info.annotation)

    if isinstance(received_body, FormData):
        body_to_process = await _extract_form_body(fields_to_extract, received_body)

    if single_not_embedded_field:

from pydantic import GetJsonSchemaHandler
from starlette.datastructures import URL as URL  # noqa: F401
from starlette.datastructures import Address as Address  # noqa: F401
from starlette.datastructures import FormData as FormData  # noqa: F401
from starlette.datastructures import Headers as Headers  # noqa: F401
from starlette.datastructures import QueryParams as QueryParams  # noqa: F401

from fastapi import FastAPI, Form
from pydantic import BaseModel

app = FastAPI()


class FormData(BaseModel):
    username: str
    password: str
    model_config = {"extra": "forbid"}


@app.post("/login/")
async def login(data: FormData = Form()):

from starlette._exception_handler import wrap_app_handling_exceptions
from starlette._utils import is_async_callable
from starlette.concurrency import iterate_in_threadpool, run_in_threadpool
from starlette.datastructures import FormData
from starlette.exceptions import HTTPException
from starlette.requests import Request
from starlette.responses import JSONResponse, Response, StreamingResponse
from starlette.routing import (
    BaseRoute,
    Match,

from fastapi import FastAPI, Form
from pydantic import BaseModel

app = FastAPI()


class FormData(BaseModel):
    username: str
    password: str
    model_config = {"extra": "forbid"}


@app.post("/login/")
async def login(data: Annotated[FormData, Form()]):
    return data
```

Bir öğeyi güncellemek için [HTTP `PUT`](https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/PUT) operasyonunu kullanabilirsiniz.

Girdi verisini JSON olarak saklanabilecek bir formata (ör. bir NoSQL veritabanı ile) dönüştürmek için `jsonable_encoder` kullanabilirsiniz. Örneğin, `datetime` değerlerini `str`'ye çevirmek gibi.

{* ../../docs_src/body_updates/tutorial001_py310.py hl[28:33] *}

    Bu örnekte, `Item` dataclass'larından oluşan bir listedir.

6. Burada `items` içeren bir dictionary döndürüyoruz; `items` bir dataclass listesi.

    FastAPI, veriyi JSON'a <dfn title="veriyi aktarılabilir bir formata dönüştürme">serileştirme</dfn>yi yine başarır.

7. Burada `response_model`, `Author` dataclass'larından oluşan bir listenin type annotation'ını kullanıyor.