{* ../../docs_src/body_nested_models/tutorial005_py310.py hl[2,8] *}

The string will be checked to be a valid URL, and documented in JSON Schema / OpenAPI as such.

## Attributes with lists of submodels { #attributes-with-lists-of-submodels }

You can also use Pydantic models as subtypes of `list`, `set`, etc.:

{* ../../docs_src/body_nested_models/tutorial006_py310.py hl[18] *}

Например, мы можем определить модель `Image`:

{* ../../docs_src/body_nested_models/tutorial004_py310.py hl[7:9] *}

### Использование подмодели как типа { #use-the-submodel-as-a-type }

Также мы можем использовать эту модель как тип атрибута:

{* ../../docs_src/body_nested_models/tutorial004_py310.py hl[18] *}

Это означает, что **FastAPI** будет ожидать тело запроса, аналогичное этому:

```JSON
{

import importlib

import pytest
from fastapi.testclient import TestClient

from ...utils import needs_py310


@pytest.fixture(
    name="client",
    params=[
        pytest.param("tutorial005_py39"),
        pytest.param("tutorial005_py310", marks=needs_py310),
        pytest.param("tutorial005_an_py39"),
        pytest.param("tutorial005_an_py310", marks=needs_py310),
    ],
)
def get_client(request: pytest.FixtureRequest):

We can instead create an input model with the plaintext password and an output model without it:

{* ../../docs_src/response_model/tutorial003_py310.py hl[9,11,16] *}

Here, even though our *path operation function* is returning the same input user that contains the password:

{* ../../docs_src/response_model/tutorial003_py310.py hl[24] *}

...we declared the `response_model` to be our model `UserOut`, that doesn't include the password:

{* ../../docs_src/response_model/tutorial003_py310.py hl[9,11,16] *}

Aqui, embora nossa *função de operação de rota* esteja retornando o mesmo usuário de entrada que contém a senha:

{* ../../docs_src/response_model/tutorial003_py310.py hl[24] *}

...declaramos o `response_model` como nosso modelo `UserOut`, que não inclui a senha:

{* ../../docs_src/response_model/tutorial003_py310.py hl[22] *}

from dirty_equals import IsList
from fastapi.testclient import TestClient

from ...utils import needs_py310


@pytest.fixture(
    name="client",
    params=[
        pytest.param("tutorial005_py39"),
        pytest.param("tutorial005_py310", marks=needs_py310),
    ],
)
def get_client(request: pytest.FixtureRequest):
    mod = importlib.import_module(f"docs_src.body_nested_models.{request.param}")

例如，在 `Image` 模型中我们有一个 `url` 字段，我们可以把它声明为 Pydantic 的 `HttpUrl`，而不是 `str`：

{* ../../docs_src/body_nested_models/tutorial005_py310.py hl[2,8] *}

该字符串将被检查是否为有效的 URL，并在 JSON Schema / OpenAPI 文档中进行记录。

## 带有一组子模型的属性

你还可以将 Pydantic 模型用作 `list`、`set` 等的子类型：

{* ../../docs_src/body_nested_models/tutorial006_py310.py hl[18] *}

这将期望（转换，校验，记录文档等）下面这样的 JSON 请求体：

```JSON hl_lines="11"
{
    "name": "Foo",

"docs_src/security/tutorial004_an_py39.py" = ["B904"]
"docs_src/security/tutorial004_an_py310.py" = ["B904"]
"docs_src/security/tutorial004_py310.py" = ["B904"]
"docs_src/security/tutorial005_an_py310.py" = ["B904"]
"docs_src/security/tutorial005_an_py39.py" = ["B904"]
"docs_src/security/tutorial005_py310.py" = ["B904"]
"docs_src/security/tutorial005_py39.py" = ["B904"]
"docs_src/dependencies/tutorial008b_py39.py" = ["B904"]

from fastapi.testclient import TestClient
from inline_snapshot import snapshot

from ...utils import needs_py310


@pytest.fixture(
    name="mod",
    params=[
        pytest.param("tutorial005_py39"),
        pytest.param("tutorial005_py310", marks=needs_py310),
        pytest.param("tutorial005_an_py39"),
        pytest.param("tutorial005_an_py310", marks=needs_py310),
    ],
)
def get_mod(request: pytest.FixtureRequest):

{* ../../docs_src/response_model/tutorial003_py310.py hl[9,11,16] *}

Obwohl unsere *Pfadoperation-Funktion* hier denselben `user` von der Eingabe zurückgibt, der das Passwort enthält:

{* ../../docs_src/response_model/tutorial003_py310.py hl[24] *}

... haben wir deklariert, dass `response_model` das Modell `UserOut` ist, welches das Passwort nicht enthält: