yii2tech\admin\grid\ActionColumn::renderDataCellContent PHP Method

    protected function renderDataCellContent($model, $key, $index)
    {
        return preg_replace_callback('/\\{([\\w\\-\\/]+)\\}/', function ($matches) use($model, $key, $index) {
            $name = $matches[1];
            return $this->renderButton($name, $model, $key, $index);
        }, $this->template);
    }