response = client.post("/body-embed")
    assert response.status_code == 422


def test_required_nonable_body_embed_invalid():
    response = client.post("/body-embed", json={"invalid": "invalid"})
    assert response.status_code == 422


def test_required_noneable_body_embed_value():
    response = client.post("/body-embed", json={"b": "foo"})
    assert response.status_code == 200

/// info

`Body` also has all the same extra validation and metadata parameters as `Query`, `Path` and others you will see later.

///

## Embed a single body parameter { #embed-a-single-body-parameter }

Let's say you only have a single `item` body parameter from a Pydantic model `Item`.

By default, **FastAPI** will then expect its body directly.

    )
    price: float = Field(gt=0, description="The price must be greater than zero")
    tax: float | None = None


@app.put("/items/{item_id}")
async def update_item(item_id: int, item: Item = Body(embed=True)):
    results = {"item_id": item_id, "item": item}

# =====================================================================================
# Without aliases


@app.post("/required-str", operation_id="required_str")
async def read_required_str(p: Annotated[str, Body(embed=True)]):
    return {"p": p}


class BodyModelRequiredStr(BaseModel):
    p: str


@app.post("/model-required-str", operation_id="model_required_str")
async def read_model_required_str(p: BodyModelRequiredStr):

    public abstract ConfigurableFileCollection getJquery();

    /**
     * The release notes javascript to embed in the HTML
     */
    @InputFile
    @PathSensitive(PathSensitivity.NONE)
    public abstract RegularFileProperty getReleaseNotesJavascriptFile();

    /**
     * The release notes CSS to embed in the HTML
     */
    @InputFile
    @PathSensitive(PathSensitivity.NONE)

```Python
item: Item = Body(embed=True)
```

so wie in:

{* ../../docs_src/body_multiple_params/tutorial005_an_py310.py hl[17] *}

In diesem Fall erwartet **FastAPI** einen Body wie:

```JSON hl_lines="2"
{

# Without aliases


@app.post("/optional-list-str", operation_id="optional_list_str")
async def read_optional_list_str(
    p: Annotated[Optional[list[str]], Body(embed=True)] = None,
):
    return {"p": p}


class BodyModelOptionalListStr(BaseModel):
    p: Optional[list[str]] = None


@app.post("/model-optional-list-str", operation_id="model_optional_list_str")

```Python
item: Item = Body(embed=True)
```

como en:

{* ../../docs_src/body_multiple_params/tutorial005_an_py310.py hl[17] *}

En este caso, **FastAPI** esperará un cuerpo como:

```JSON hl_lines="2"
{
    "item": {
        "name": "Foo",

```Python
item: Item = Body(embed=True)
```

como em:

{* ../../docs_src/body_multiple_params/tutorial005_an_py310.py hl[17] *}

Neste caso o **FastAPI** esperará um corpo como:

```JSON hl_lines="2"
{
    "item": {

```Python
item: Item = Body(embed=True)
```

так же, как в этом примере:

{* ../../docs_src/body_multiple_params/tutorial005_an_py310.py hl[17] *}

В этом случае **FastAPI** будет ожидать тело запроса в формате:

```JSON hl_lines="2"
{