<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_switch" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.comment.line_length" value="80"/>
<setting id="org.eclipse.jdt.core.formatter.use_on_off_tags" value="true"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_between_empty_brackets_in_array_allocation_expression" value="do not insert"/>

<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_switch" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.comment.line_length" value="80"/>
<setting id="org.eclipse.jdt.core.formatter.use_on_off_tags" value="true"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_between_empty_brackets_in_array_allocation_expression" value="do not insert"/>

<setting id="org.eclipse.wst.jsdt.core.formatter.insert_space_before_colon_in_object_initializer" value="do not insert"/>
<setting id="org.eclipse.wst.jsdt.core.formatter.comment.line_length" value="80"/>
<setting id="org.eclipse.wst.jsdt.core.formatter.insert_space_after_comma_in_method_declaration_throws" value="insert"/>

                    MAX_TERMINAL_WIDTH,
                    Math.max(terminalWidth <= 0 ? DEFAULT_TERMINAL_WIDTH : terminalWidth, MIN_TERMINAL_WIDTH));
            lineLength = terminalWidth - MAX_LOG_PREFIX_SIZE;
            maxProjectNameLength = lineLength - PROJECT_STATUS_SUFFIX_SIZE;
        }
    }

    @Override
    public void projectDiscoveryStarted(ExecutionEvent event) {
        if (logger.isInfoEnabled()) {

            alias=alias,
            title=title,
            description=description,
            gt=gt,
            ge=ge,
            lt=lt,
            le=le,
            min_length=min_length,
            max_length=max_length,
            discriminator=discriminator,
            multiple_of=multiple_of,
            allow_inf_nan=allow_inf_nan,
            max_digits=max_digits,

async def default(foo: Annotated[str, Query()] = "foo"):
    return {"foo": foo}


@app.get("/required")
async def required(foo: Annotated[str, Query(min_length=1)]):
    return {"foo": foo}


@app.get("/multiple")
async def multiple(foo: Annotated[str, object(), Query(min_length=1)]):
    return {"foo": foo}


@app.get("/unrelated")
async def unrelated(foo: Annotated[str, object()]):
    return {"foo": foo}

```

But we are now declaring it with `Query`, for example like:

//// tab | Annotated

```Python
q: Annotated[Union[str, None], Query(min_length=3)] = None
```

////

//// tab | non-Annotated

```Python
q: Union[str, None] = Query(default=None, min_length=3)
```

////

So, when you need to declare a value as required while using `Query`, you can simply not declare a default value:

```Python
q: Union[str, None] = Query(default=None, max_length=50)
```

👉 🔜 ✔ 📊, 🎦 🆑 ❌ 🕐❔ 📊 🚫 ☑, & 📄 🔢 🗄 🔗 *➡ 🛠️*.

## 🚮 🌅 🔬

👆 💪 🚮 🔢 `min_length`:

//// tab | 🐍 3️⃣.6️⃣ & 🔛

```Python hl_lines="10"
{!> ../../docs_src/query_params_str_validations/tutorial003.py!}
```

////

//// tab | 🐍 3️⃣.1️⃣0️⃣ & 🔛

```Python
q: Union[str, None] = Query(default=None, max_length=50)
```

これにより、データを検証し、データが有効でない場合は明確なエラーを表示し、OpenAPIスキーマの　*path operation* にパラメータを記載します。

## バリデーションをさらに追加する

パラメータ`min_length`も追加することができます:

```Python hl_lines="10"
{!../../docs_src/query_params_str_validations/tutorial003.py!}
```

## 正規表現の追加

パラメータが一致するべき<abbr title="正規表現とは、文字列の検索パターンを定義する文字列です。">正規表現</abbr>を定義することができます:

```

Но у нас query-параметр определён как `Query`. Например:

//// tab | Annotated

```Python
q: Annotated[Union[str, None], Query(min_length=3)] = None
```

////

//// tab | без Annotated

```Python
q: Union[str, None] = Query(default=None, min_length=3)
```

////

В таком случае, чтобы сделать query-параметр `Query` обязательным, вы можете просто не указывать значение по умолчанию: