fake_hashed_password = user.password + "notreallyhashed"
    db_user = models.User(email=user.email, hashed_password=fake_hashed_password)
    db_user.save()
    return db_user


def get_items(skip: int = 0, limit: int = 100):
    return list(models.Item.select().offset(skip).limit(limit))


def create_user_item(item: schemas.ItemCreate, user_id: int):
    db_item = models.Item(**item.dict(), owner_id=user_id)

@app.post("/items/", response_model=ResponseMessage, tags=["items"])
async def create_item(item: Item):
    return {"message": "Item received"}


@app.get("/items/", response_model=list[Item], tags=["items"])
async def get_items():
    return [
        {"name": "Plumbus", "price": 3},
        {"name": "Portal Gun", "price": 9001},
    ]


@app.post("/users/", response_model=ResponseMessage, tags=["users"])

    return crud.create_user_item(item=item, user_id=user_id)


@app.get("/items/", response_model=List[schemas.Item], dependencies=[Depends(get_db)])
def read_items(skip: int = 0, limit: int = 100):
    items = crud.get_items(skip=skip, limit=limit)
    return items


@app.get(
    "/slowusers/", response_model=List[schemas.User], dependencies=[Depends(get_db)]
)
def read_slow_users(skip: int = 0, limit: int = 100):

👥 💪 ⏬ 🗄 🎻 📁 `openapi.json` & ⤴️ 👥 💪 **❎ 👈 🔡 🔖** ⏮️ ✍ 💖 👉:

```Python
{!../../docs_src/generate_clients/tutorial004.py!}
```

⏮️ 👈, 🛠️ 🆔 🔜 📁 ⚪️➡️ 👜 💖 `items-get_items` `get_items`, 👈 🌌 👩‍💻 🚂 💪 🏗 🙅 👩‍🔬 📛.

### 🏗 📕 👩‍💻 ⏮️ 🗜 🗄

🔜 🔚 🏁 📁 `openapi.json`, 👆 🔜 🔀 `package.json` ⚙️ 👈 🇧🇿 📁, 🖼:

```JSON  hl_lines="7"
{
  "name": "frontend-app",

```

////

//// tab | Node.js

```Javascript
{!> ../../docs_src/generate_clients/tutorial004.js!}
```

////

Damit würden die Operation-IDs von Dingen wie `items-get_items` in `get_items` umbenannt, sodass der Client-Generator einfachere Methodennamen generieren kann.

### Einen TypeScript-Client mit der modifizierten OpenAPI generieren

    return {"user_id": user_id}


@item_router.get("/")
def get_items(user_id: Optional[str] = None):
    if user_id is None:
        return [{"item_id": "i1", "user_id": "u1"}, {"item_id": "i2", "user_id": "u2"}]
    else:
        return [{"item_id": "i2", "user_id": user_id}]


@item_router.get("/{item_id}")
def get_item(item_id: str, user_id: Optional[str] = None):
    if user_id is None:

我们可以将 OpenAPI JSON 下载到一个名为`openapi.json`的文件中，然后使用以下脚本**删除此前缀的标签**：

```Python
{!../../docs_src/generate_clients/tutorial004.py!}
```

通过这样做，操作ID将从类似于 `items-get_items` 的名称重命名为 `get_items` ，这样客户端生成器就可以生成更简洁的方法名称。

### 使用预处理的OpenAPI生成TypeScript客户端

现在，由于最终结果保存在文件openapi.json中，你可以修改 package.json 文件以使用此本地文件，例如：

```JSON  hl_lines="7"
{
  "name": "frontend-app",

from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str
    price: Optional[float] = None


@app.api_route("/items/{item_id}", methods=["GET"])
def get_items(item_id: str):
    return {"item_id": item_id}


def get_not_decorated(item_id: str):
    return {"item_id": item_id}


app.add_api_route("/items-not-decorated/{item_id}", get_not_decorated)

    pass


def get_username():
    try:
        yield "Rick"
    except InternalError:
        print("Oops, we didn't raise again, Britney 😱")


@app.get("/items/{item_id}")
def get_item(item_id: str, username: str = Depends(get_username)):
    if item_id == "portal-gun":
        raise InternalError(
            f"The portal gun is too dangerous to be owned by {username}"
        )

    pass


def get_username():
    try:
        yield "Rick"
    except InternalError:
        print("Oops, we didn't raise again, Britney 😱")


@app.get("/items/{item_id}")
def get_item(item_id: str, username: Annotated[str, Depends(get_username)]):
    if item_id == "portal-gun":
        raise InternalError(
            f"The portal gun is too dangerous to be owned by {username}"
        )