如何在Laravel验证中实现类似required_without的unique_wihtout

php artisan make:rule UniqueWithout

public function passes($attribute, $value, $parameters)
{
    $otherAttributes = array_slice($parameters, 1);
    $requiredAttributes = array_slice($parameters, 0, 1);

    // 检查是否存在至少一个必填字段
    foreach ($requiredAttributes as $requiredAttribute) {
        if (!empty($this->getValue($requiredAttribute))) {
            return true;
        }
    }

    // 检查是否存在唯一字段
    foreach ($otherAttributes as $otherAttribute) {
        $query = DB::table($parameters[0])
            ->where($otherAttribute, $value);

        foreach ($requiredAttributes as $requiredAttribute) {
            $query->whereNotNull($requiredAttribute);
        }

        if ($query->exists()) {
            return false;
        }
    }

    return true;
}

public function message()
{
    return ':attribute 已经存在或者必填字段不能为空。';
}

use App\Rules\UniqueWithout;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Validator;

public function store(Request $request)
{
    $validator = Validator::make($request->all(), [
        'field1' => ['required_without:field2', new UniqueWithout('table_name', 'field2')],
        'field2' => 'required_without:field1',
    ]);

    if ($validator->fails()) {
        // 验证失败处理逻辑
    }

    // 验证通过处理逻辑
}