Check the in-code annotation tips above to see more specific details.

## Learn More

You can also combine `dataclasses` with other Pydantic models, inherit from them, include them in your own models, etc.

To learn more, check the <a href="https://docs.pydantic.dev/latest/concepts/dataclasses/" class="external-link" target="_blank">Pydantic docs about dataclasses</a>.

## Version

```

</div>

Now you can check in your code editor the newly created directory `docs/ht/`.

That command created a file `docs/ht/mkdocs.yml` with a simple config that inherits everything from the `en` version:

```yaml
INHERIT: ../en/mkdocs.yml
```

!!! tip
    You could also simply create that file with those contents manually.

We could do better.

We can declare a `UserBase` model that serves as a base for our other models. And then we can make subclasses of that model that inherit its attributes (type declarations, validation, etc).

All the data conversion, validation, documentation, etc. will still work as normally.

    All the security utilities that integrate with OpenAPI (and the automatic API docs) inherit from `SecurityBase`, that's how **FastAPI** can know how to integrate them in OpenAPI.

## What it does

* Data conversion
* Data validation
* Automatic documentation

## Special types and validation

Apart from normal singular types like `str`, `int`, `float`, etc. you can use more complex singular types that inherit from `str`.

### `Response`

The main `Response` class, all the other responses inherit from it.

You can return it directly.

It accepts the following parameters:

* `content` - A `str` or `bytes`.
* `status_code` - An `int` HTTP status code.
* `headers` - A `dict` of strings.

Obiges Kommando hat eine Datei `docs/ht/mkdocs.yml` mit einer Minimal-Konfiguration erstellt, die alles von der `en`-Version erbt:

```yaml
INHERIT: ../en/mkdocs.yml
```

!!! tip "Tipp"
    Sie können diese Datei mit diesem Inhalt auch einfach manuell erstellen.

$ python ./scripts/docs.py new-lang ht

Successfully initialized: docs/ht
```

</div>

现在，你可以在编辑器中查看新创建的目录 `docs/ht/`。

这条命令会生成一个从 `en` 版本继承了所有属性的配置文件 `docs/ht/mkdocs.yml`:

```yaml
INHERIT: ../en/mkdocs.yml
```

!!! tip
    你也可以自己手动创建包含这些内容的文件。

这条命令还会生成一个文档主页 `docs/ht/index.md`，你可以从这个文件开始翻译。

然后，你可以根据上面的"已有语言"的指引继续进行翻译。

```Python hl_lines="11"
{!../../../docs_src/sql_databases/sql_app/database.py!}
```

### Create a `Base` class

Now we will use the function `declarative_base()` that returns a class.

Later we will inherit from this class to create each of the database models or classes (the ORM models):

```Python hl_lines="13"
{!../../../docs_src/sql_databases/sql_app/database.py!}
```

## Create the database models

### Create an `Enum` class

Import `Enum` and create a sub-class that inherits from `str` and from `Enum`.

By inheriting from `str` the API docs will be able to know that the values must be of type `string` and will be able to render correctly.