@app.get("/users/{user_id}", response_model=schemas.User)
def read_user(user_id: int, db: Session = Depends(get_db)):
    db_user = crud.get_user(db, user_id=user_id)
    if db_user is None:
        raise HTTPException(status_code=404, detail="User not found")
    return db_user


@app.post("/users/{user_id}/items/", response_model=schemas.Item)
def create_item_for_user(
    user_id: int, item: schemas.ItemCreate, db: Session = Depends(get_db)
):

**FastAPI** nimmt dieses Modell, generiert dessen JSON-Schema und fügt es an der richtigen Stelle in OpenAPI ein.

Um beispielsweise eine weitere Response mit dem Statuscode `404` und einem Pydantic-Modell `Message` zu deklarieren, können Sie schreiben:

```Python hl_lines="18  22"
{!../../../docs_src/additional_responses/tutorial001.py!}
```

!!! note "Hinweis"

**FastAPI** will take that model, generate its JSON Schema and include it in the correct place in OpenAPI.

For example, to declare another response with a status code `404` and a Pydantic model `Message`, you can write:

```Python hl_lines="18  22"
{!../../../docs_src/additional_responses/tutorial001.py!}
```

!!! note
    Keep in mind that you have to return the `JSONResponse` directly.

    assert "id" in data


# TODO: pv2 add version with Pydantic v2
@needs_pydanticv1
def test_nonexistent_user(client):
    response = client.get("/users/999")
    assert response.status_code == 404, response.text


# TODO: pv2 add version with Pydantic v2
@needs_pydanticv1
def test_get_users(client):
    response = client.get("/users/")
    assert response.status_code == 200, response.text

    assert "id" in data


@needs_py310
# TODO: pv2 add version with Pydantic v2
@needs_pydanticv1
def test_nonexistent_user(client):
    response = client.get("/users/999")
    assert response.status_code == 404, response.text


@needs_py310
# TODO: pv2 add version with Pydantic v2
@needs_pydanticv1
def test_get_users(client):
    response = client.get("/users/")
    assert response.status_code == 200, response.text

app = FastAPI()

items = {"foo": "The Foo Wrestlers"}


@app.get("/items/{item_id}")
async def read_item(item_id: str):
    if item_id not in items:
        raise HTTPException(status_code=404, detail="Item not found")

    assert response.status_code == 200, response.text
    assert response.json() == {"item": "The Foo Wrestlers"}


def test_get_item_not_found():
    response = client.get("/items/bar")
    assert response.status_code == 404, response.text
    assert response.headers.get("x-error") is None
    assert response.json() == {"detail": "Item not found"}


def test_openapi_schema():
    response = client.get("/openapi.json")

    "/users/{user_id}", response_model=schemas.User, dependencies=[Depends(get_db)]
)
def read_user(user_id: int):
    db_user = crud.get_user(user_id=user_id)
    if db_user is None:
        raise HTTPException(status_code=404, detail="User not found")
    return db_user


@app.post(
    "/users/{user_id}/items/",
    response_model=schemas.Item,
    dependencies=[Depends(get_db)],
)

        raise InternalError(
            f"The portal gun is too dangerous to be owned by {username}"
        )
    if item_id != "plumbus":
        raise HTTPException(
            status_code=404, detail="Item not found, there's only a plumbus here"
        )

from typing import Union

from fastapi import FastAPI
from fastapi.responses import FileResponse
from pydantic import BaseModel


class Item(BaseModel):
    id: str
    value: str


responses = {
    404: {"description": "Item not found"},
    302: {"description": "The item was moved"},
    403: {"description": "Not enough privileges"},
}


app = FastAPI()


@app.get(
    "/items/{item_id}",