## Attributs avec des listes de sous-modèles { #attributes-with-lists-of-submodels }

Vous pouvez également utiliser des modèles Pydantic comme sous-types de `list`, `set`, etc. :

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

Cela attendra (convertira, validera, documentera, etc.) un corps JSON comme :

```JSON hl_lines="11"
{

	}
}

// implemented to ensure that duplicate keys in JSON
// are merged together into a single JSON key, also
// to remove any extraneous JSON bodies.
//
// Go stdlib doesn't support parsing JSON with duplicate
// keys, so we need to use this technique to merge the
// keys.
func sanitizePolicy(r io.Reader) (io.Reader, error) {
	var buf bytes.Buffer
	e := json.NewEncoder(&buf)

И вы можете сделать это, даже если тип данных в HTTP-запросе — не JSON.

Например, в этом приложении мы не используем встроенную функциональность FastAPI для извлечения JSON Schema из моделей Pydantic, равно как и автоматическую валидацию JSON. Мы объявляем тип содержимого HTTP-запроса как YAML, а не JSON:

{* ../../docs_src/path_operation_advanced_configuration/tutorial007_py310.py hl[15:20, 22] *}

  private val MOSHI =
    Moshi
      .Builder()
      .add(
        object : Any() {
          @ToJson fun byteStringToJson(byteString: ByteString) = byteString.hex()

          @FromJson fun byteStringFromJson(json: String) = json.decodeHex()
        },
      ).add(KotlinJsonAdapterFactory())
      .build()
  private val STORY_JSON_ADAPTER = MOSHI.adapter(Story::class.java)

  private val fileSystem = FileSystem.SYSTEM

```JSON
{
  "item": "The Foo Wrestlers"
}
```

But if the client requests `http://example.com/items/bar` (a non-existent `item_id` `"bar"`), that client will receive an HTTP status code of 404 (the "not found" error), and a JSON response of:

```JSON
{
  "detail": "Item not found"
}
```

/// tip

    assert response.status_code == status.HTTP_200_OK
    assert response.json() == {"dep1": "hello", "dep2": "hello123"}


def test_openapi_schema():
    response = client.get("/openapi.json")
    assert response.status_code == status.HTTP_200_OK
    actual_schema = response.json()
    assert (
        len(actual_schema["paths"]["/"]["get"]["parameters"]) == 1
    )  # primary goal of this test

    assert response.status_code == 200, response.text
    assert response.json() == {"path": "test_path", "query": "test_query"}


def test_openapi_schema():
    response = client.get("/openapi.json")
    assert response.status_code == status.HTTP_200_OK
    assert response.json() == snapshot(
        {
            "components": {
                "schemas": {

* Автоматическая документация моделей данных с помощью [**JSON Schema**](https://json-schema.org/) (так как сама спецификация OpenAPI основана на JSON Schema).
* Разработан вокруг этих стандартов, после тщательного их изучения. Это не дополнительная надстройка поверх.

     * as {@code jobLogId}. When job logging is disabled, {@code jobLogId} is {@code null}.
     *
     * @param id the ID of the scheduled job to start
     * @return JSON response with {@code jobLogId} (nullable) and status
     */
    // PUT /api/admin/scheduler/{id}/start
    @Execute(urlPattern = "{}/@word")
    public JsonResponse<ApiResult> put$start(final String id) {

        response = client.get("/broken")
        assert response.status_code == 200
        assert response.json() == {"message": "all good?"}


def test_broken_return_finishes():
    client = TestClient(app, raise_server_exceptions=False)
    response = client.get("/broken")
    assert response.status_code == 200