private function addFields($tableModel)
 {
     $sortNum = 1;
     foreach (SqlData::$initFields as $field) {
         $model = new DefineTableField();
         $model->loadDefaultValues();
         $model->table = $tableModel->id;
         $model->name = $field['name'];
         $model->name_en = $field['name_en'];
         $model->type = $field['type'];
         $model->length = $field['length'];
         $model->is_null = $field['is_null'];
         $model->is_main = $field['is_main'];
         $model->is_sys = $field['is_sys'];
         $model->sort_num = $sortNum;
         $model->note = $field['name'];
         $model->front_form_type = '';
         $model->back_form_type = '';
         $model->save(false);
         $sortNum += 1;
     }
 }