write string in action column ExpandRowColumn

[serie1bmw]

Prerequisites

• [x] I have searched for similar issues in both open and closed tickets and cannot find a duplicate.
• [ ] The issue still exists against the latest master branch of yii2-grid.
• [x] This is not an usage question. I confirm having gone through and read the documentation and demos.
• [ ] This is not a general programming / coding question. (Those should be directed to the webtips Q & A forum).
• [ ] I have attempted to find the simplest possible steps to reproduce the issue.
• [ ] I have included a failing test as a pull request (Optional).

Expected behavior and actual behavior

It's possible add code in action column to expand ExpandRowColumn like with anonymous function? I need add in this column total rows in each ExpandRowColumn like in image https://i.imgur.com/YDQ0nL9.jpg

example in expandIcon property:

[
    'class' => 'kartik\grid\ExpandRowColumn',
    'width' => '50px',
    'expandIcon' => function ($model, $key, $index, $column) {
    $total = Model::find()->where(['id_model' => $model->id])->count();
        return '<i class="fa fa-plus-square"></i> ' . $total;
    },
    'value' => function ($model, $key, $index, $column) {
        return GridView::ROW_COLLAPSED;
    },
    'detail' => function ($model, $key, $index, $column) {
        return Yii::$app->controller->renderPartial('_expand-row-details', ['model' => $model]);
    },
],

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[kartik-v]

No - unfortunately - this will not be a trivial change - and will require a great change to the javascript.

I recommend a solution for you is to add another DataColumn just adjacent to the ExpandRowColumn to show the total or your additional information