foreach ($this->getMetaData()->columns as $column) {
            $columnName = $column->name;

            switch ($column->dbType) {
                case 'date':
                    if (empty($this->$columnName)) {
                        $this->setAttribute($columnName, null);
                    } else {
                        $this->setAttribute($columnName, date('d.m.Y', strtotime($this->$columnName)));
                    }
                break;

                case 'timestamp without time zone':
                    if (empty($this->$columnName)) {
                        $this->setAttribute($columnName, null);
                    } else {
                        $this->setAttribute($columnName, date('d.m.Y H:i:s', strtotime($this->$columnName)));
                    }
                break;
            }
        }