これが「*パスオペレーションデコレータ*」です。

///

他のオペレーションも使用できます:

* `@app.post()`
* `@app.put()`
* `@app.delete()`

また、よりエキゾチックなものも使用できます:

* `@app.options()`
* `@app.head()`
* `@app.patch()`
* `@app.trace()`

/// tip | 豆知識

各オペレーション (HTTPメソッド)は自由に使用できます。

**FastAPI**は特定の意味づけを強制しません。

ここでの情報は、要件ではなくガイドラインとして提示されます。

import org.apache.logging.log4j.Logger;
import org.codelibs.fess.app.pager.StopwordsPager;
import org.codelibs.fess.app.service.StopwordsService;
import org.codelibs.fess.app.web.CrudMode;
import org.codelibs.fess.app.web.admin.dict.stopwords.UploadForm;
import org.codelibs.fess.app.web.api.ApiResult;
import org.codelibs.fess.app.web.api.admin.FessApiAdminAction;
import org.codelibs.fess.dict.stopwords.StopwordsFile;

from fastapi import FastAPI, Request

app = FastAPI(root_path="/api/v1")


@app.get("/app")
def read_main(request: Request):

在我们的例子中，这个装饰器告诉 **FastAPI** 位于其下方的函数对应着**路径** `/` 加上 `get` **操作**。

它是一个「**路径操作装饰器**」。

///

你也可以使用其他的操作：

* `@app.post()`
* `@app.put()`
* `@app.delete()`

以及更少见的：

* `@app.options()`
* `@app.head()`
* `@app.patch()`
* `@app.trace()`

/// tip

你可以随意使用任何一个操作（HTTP方法）。

**FastAPI** 没有强制要求操作有任何特定的含义。

此处提供的信息仅作为指导，而不是要求。

 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.app.web;

import org.codelibs.fess.app.web.base.FessSearchAction;
import org.codelibs.fess.app.web.base.SearchForm;
import org.codelibs.fess.util.RenderDataUtil;
import org.lastaflute.web.Execute;
import org.lastaflute.web.response.HtmlResponse;

/**

    path = tmp_path / "test.txt"
    path.write_bytes(b"<file content>")
    app = FastAPI()

    testing_file_store: list[UploadFile] = []

    @app.post("/uploadfile/")
    def create_upload_file(file: UploadFile):
        testing_file_store.append(file)
        return {"filename": file.filename}

    client = TestClient(app)
    with path.open("rb") as file:

from fastapi import FastAPI
from fastapi.testclient import TestClient
from pydantic import BaseModel

app = FastAPI()


class Product(BaseModel):
    name: str
    description: str = None  # type: ignore
    price: float


@app.get("/product")
async def create_item(product: Product):
    return product


client = TestClient(app)


def test_get_with_body():

from fastapi import Depends, FastAPI, Header, status
from fastapi.testclient import TestClient

app = FastAPI()


def get_header(*, someheader: str = Header()):
    return someheader


def get_something_else(*, someheader: str = Depends(get_header)):
    return f"{someheader}123"


@app.get("/")
def get_deps(dep1: str = Depends(get_header), dep2: str = Depends(get_something_else)):
    return {"dep1": dep1, "dep2": dep2}

from fastapi import FastAPI, Path, Query, status
from fastapi.testclient import TestClient

app = FastAPI()


@app.get("/{repeated_alias}")
def get_parameters_with_repeated_aliases(
    path: str = Path(..., alias="repeated_alias"),
    query: str = Query(..., alias="repeated_alias"),
):
    return {"path": path, "query": query}


client = TestClient(app)


def test_get_parameters():

class FooBaseModel(BaseModel):
    model_config = ConfigDict(extra="forbid")


class Foo(FooBaseModel):
    pass


app = FastAPI()


@app.post("/")
async def post(
    foo: Union[Foo, None] = None,
):
    return foo


client = TestClient(app)


def test_call_invalid():
    response = client.post("/", json={"foo": {"bar": "baz"}})
    assert response.status_code == 422