/** * @return int */ static function upgradeManagementModel() { $change_column_num = 0; foreach (ModelManager::getModels() as $k => $v) { $model = new $v(); $change_column_num += $model->upgrade(); } foreach (ModelManager::getModels() as $k => $v) { $model = new $v(); $change_column_num += $model->addReference(); } return $change_column_num; }