How to sort by calculated fields in GridView?

Question

Yii

By default, only those fields that are in the model table are available for sorting in the GridView.
The task is to sort by calculated fields. There is a tutorial, tyk , but it just gets the value through the link and pushes it into setSort in the search method:

$dataProvider->setSort([
        'attributes' => [
            'id',
            'countryName' => [
                'asc' => ['tbl_country.country_name' => SORT_ASC],
                'desc' => ['tbl_country.country_name' => SORT_DESC],
                'label' => 'Country Name'
            ]
        ]
    ]);

In my case, the values ​​should be calculated based on the related data.
Solved the problem in the following way. In the search method:

$query = Model::find();
$select = ['*', '(SELECT %MY QUERY WITH COUNT JOINS ETC%) AS calculatedField'];
$query->select($select);
$dataProvider = new ActiveDataProvider([
    'query' => $query,
]);
$dataProvider->setSort([
    'attributes'=>[
        'calculatedField' => [
            'asc'=>['calculatedField'=>SORT_ASC,],
            'desc'=>['calculatedField'=>SORT_DESC],
        ],
    ]
]);

Are there any more elegant solutions? Or is there something in the GridView itself for this?