app = FastAPI()


class CommonHeaders(BaseModel):
    host: str
    save_data: bool
    if_modified_since: str | None = None
    traceparent: str | None = None
    x_tag: list[str] = []


@app.get("/items/")
async def read_items(headers: CommonHeaders = Header(convert_underscores=False)):

                    "properties": {
                        "detail": {
                            "title": "Detail",
                            "type": "array",
                            "items": {"$ref": "#/components/schemas/ValidationError"},
                        }
                    },
                },
                "ValidationError": {
                    "title": "ValidationError",

    app = test_module.app
    client = test_module.client
    app.dependency_overrides = None
    response = client.get("/items/?q=foo&skip=100&limit=200")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "message": "Hello Items!",
        "params": {"q": "foo", "skip": 100, "limit": 200},

class FilterParams(BaseModel):
    limit: int = Field(100, gt=0, le=100)
    offset: int = Field(0, ge=0)
    order_by: Literal["created_at", "updated_at"] = "created_at"
    tags: list[str] = []


@app.get("/items/")
async def read_items(filter_query: Annotated[FilterParams, Query()]):

    limit: int = Field(100, gt=0, le=100)
    offset: int = Field(0, ge=0)
    order_by: Literal["created_at", "updated_at"] = "created_at"
    tags: list[str] = []


@app.get("/items/")
async def read_items(filter_query: FilterParams = Query()):

from typing import Union

from fastapi import FastAPI

app = FastAPI()


@app.get("/items/{item_id}")
async def read_item(item_id: str, q: Union[str, None] = None, short: bool = False):
    item = {"item_id": item_id}
    if q:
        item.update({"q": q})
    if not short:
        item.update(
            {"description": "This is an amazing item that has a long description"}
        )

Vous obtenez alors cette réponse <abbr title="JavaScript Object Notation">JSON</abbr> :

```JSON
{"item_id": 5, "q": "somequery"}
```

Vous venez de créer une API qui :

* Reçoit les requêtes HTTP pour les _chemins_ `/` et `/items/{item_id}`.

### Revísalo { #check-it }

Abre tu navegador en <a href="http://127.0.0.1:8000/items/5?q=somequery" class="external-link" target="_blank">http://127.0.0.1:8000/items/5?q=somequery</a>.

Verás el response JSON como:

```JSON
{"item_id": 5, "q": "somequery"}
```

Ya creaste una API que:

* Recibe requests HTTP en los _paths_ `/` y `/items/{item_id}`.

</details>

### 檢查

使用瀏覽器開啟 <a href="http://127.0.0.1:8000/items/5?q=somequery" class="external-link" target="_blank">http://127.0.0.1:8000/items/5?q=somequery</a>。

你將會看到以下的 JSON 回應：

```JSON
{"item_id": 5, "q": "somequery"}
```

你已經建立了一個具有以下功能的 API：

- 透過路徑 `/` 和 `/items/{item_id}` 接受 HTTP 請求。
- 以上路經都接受 `GET` 請求（也被稱為 HTTP _方法_）。
- 路徑 `/items/{item_id}` 有一個 `int` 型別的 `item_id` 參數。

### Verifique { #check-it }

Abra seu navegador em <a href="http://127.0.0.1:8000/items/5?q=somequery" class="external-link" target="_blank">http://127.0.0.1:8000/items/5?q=somequery</a>.

Você verá a resposta JSON como:

```JSON
{"item_id": 5, "q": "somequery"}
```

Você acabou de criar uma API que:

* Recebe requisições HTTP nas _rotas_ `/` e `/items/{item_id}`.