!!! info
    You can also use:

    * `response_model_exclude_defaults=True`
    * `response_model_exclude_none=True`

    as described in <a href="https://docs.pydantic.dev/latest/concepts/serialization/#modeldict" class="external-link" target="_blank">the Pydantic docs</a> for `exclude_defaults` and `exclude_none`.

On utilise alors l'argument `deprecated=True` de `Query` :

```Python hl_lines="18"
{!../../../docs_src/query_params_str_validations/tutorial010.py!}
```

La documentation le présentera comme il suit :

Some of them also ✨ [**sponsor FastAPI**](../help-fastapi.md#sponsor-the-author){.internal-link target=_blank} ✨, this ensures the continued and healthy **development** of FastAPI and its **ecosystem**.

And it shows their true commitment to FastAPI and its **community** (you), as they not only want to provide you a **good service** but also want to make sure you have a **good and healthy framework**, FastAPI. 🙇

### 使用 Pydantic 的`orm_mode`

现在，在用于查询的 Pydantic*模型*`Item`中`User`，添加一个内部`Config`类。

此类[`Config`](https://docs.pydantic.dev/latest/api/config/)用于为 Pydantic 提供配置。

在`Config`类中，设置属性`orm_mode = True`。

=== "Python 3.10+"

    ```Python hl_lines="13  17-18  29  34-35"
    {!> ../../../docs_src/sql_databases/sql_app_py310/schemas.py!}
    ```

=== "Python 3.9+"

```

## 非推奨パラメータ

さて、このパラメータが気に入らなくなったとしましょう

それを使っているクライアントがいるので、しばらくは残しておく必要がありますが、ドキュメントには<abbr title="使わない方がよい">非推奨</abbr>と明記しておきたいです。

その場合、`Query`にパラメータ`deprecated=True`を渡します:

```Python hl_lines="18"
{!../../../docs_src/query_params_str_validations/tutorial010.py!}
```

ドキュメントは以下のようになります:

    ```

## 😛 🔢

🔜 ➡️ 💬 👆 🚫 💖 👉 🔢 🚫🔜.

👆 ✔️ 👈 ⚫️ 📤 ⏪ ↩️ 📤 👩‍💻 ⚙️ ⚫️, ✋️ 👆 💚 🩺 🎯 🎦 ⚫️ <abbr title="obsolete, recommended not to use it">😢</abbr>.

⤴️ 🚶‍♀️ 🔢 `deprecated=True` `Query`:

=== "🐍 3️⃣.6️⃣ &amp; 🔛"

    ```Python hl_lines="18"
    {!> ../../../docs_src/query_params_str_validations/tutorial010.py!}
    ```

=== "🐍 3️⃣.1️⃣0️⃣ &amp; 🔛"

!!! info
    Sie können auch:

    * `response_model_exclude_defaults=True`
    * `response_model_exclude_none=True`

!!! info
    👆 💪 ⚙️:

    * `response_model_exclude_defaults=True`
    * `response_model_exclude_none=True`

    🔬 <a href="https://docs.pydantic.dev/latest/concepts/serialization/#modeldict" class="external-link" target="_blank">Pydantic 🩺</a> `exclude_defaults` &amp; `exclude_none`.

### Erforderlich mit Ellipse (`...`)

Es gibt eine Alternative, die explizit deklariert, dass ein Wert erforderlich ist. Sie können als Default das <abbr title='Zeichenfolge, die einen Wert direkt darstellt, etwa 1, "hallowelt", True, None'>Literal</abbr> `...` setzen:

=== "Python 3.9+"

    ```Python hl_lines="9"
    {!> ../../../docs_src/query_params_str_validations/tutorial006b_an_py39.py!}
    ```

=== "Python 3.8+"

### Worker Processes and Ports

Remember from the docs [About HTTPS](https.md){.internal-link target=_blank} that only one process can be listening on one combination of port and IP address in a server?

This is still true.

So, to be able to have **multiple processes** at the same time, there has to be a **single process listening on a port** that then transmits the communication to each worker process in some way.

### Memory per Process