/**
  * Создание подкатегории (forum_name)
  *
  * @param string $subcat_name
  * @return bool|Subcategory
  */
 private function importSubcategory($subcat_name)
 {
     $model = Subcategory::findOne(['forum_name' => $subcat_name]);
     if ($model === null) {
         $model = new Subcategory(['forum_name' => $subcat_name]);
     }
     if ($model->save()) {
         return $model;
     } else {
         VarDumper::dump($model->errors);
     }
     return false;
 }