docs: def save(self):
          """ Easy save(insert or update) for db models """
          try:
              if self.exists() is False:
                  self.db.session.add(self)
              # self.db.session.merge(self)
              self.db.session.commit()
          except (Exception, BaseException) as error:
              if current_app.config['DEBUG']:
                  raise error
              return None