old_contents: from .ordbok import Ordbok
  
  
  class FlaskOrdbok(Ordbok):
      def __init__(self, app=None, **kwargs):
          if app:
              self.init_app(app)
          return super(FlaskOrdbok, self).__init__(**kwargs)
  
      def init_app(self, app):
          self._root_path = app.config.root_path
  
      def app_run(self, app, *args, **kwargs):
          if kwargs.get('use_reloader') is not False and app.debug:
              extra_files = kwargs.get('extra_files', [])
              extra_files.extend(self.config_file_names)
              if extra_files:
                  kwargs['extra_files'] = extra_files
          return app.run(*args, **kwargs)
  
new_contents: from .ordbok import Ordbok
  
  
  class FlaskOrdbok(Ordbok):
      def __init__(self, app=None, **kwargs):
          if app:
              self.init_app(app)
          return super(FlaskOrdbok, self).__init__(**kwargs)
  
      def init_app(self, app):
          if not hasattr(app, 'extensions'):
              app.extensions = {}
          app.extensions['ordbok'] = self
          self._root_path = app.config.root_path
  
      def app_run(self, app, *args, **kwargs):
          if kwargs.get('use_reloader') is not False and app.debug:
              extra_files = kwargs.get('extra_files', [])
              extra_files.extend(self.config_file_names)
              if extra_files:
                  kwargs['extra_files'] = extra_files
          return app.run(*args, **kwargs)
  
subject: add ordbok to app.extensions in flask helper