code: def url_change_check(f):
      
      @wraps(f)
      def wrapper(self, *args, **kwargs):
          if request.method == 'GET' and self.obj is not None:
              correct_url = self.obj.url_for(f.__name__, _external=True)
              if correct_url != request.base_url:
                  if request.query_string:
                      correct_url = correct_url + '?' + request.query_string.decode()
                  return redirect(correct_url)  # TODO: Decide if this should be 302 (default) or 301
          return f(self, *args, **kwargs)
      return wrapper
docs: View method decorator that checks the URL of the loaded object in
      ``self.obj`` against the URL in the request (using
      ``self.obj.url_for(__name__)``). If the URLs do not match,
      and the request is a ``GET``, it issues a redirect to the correct URL.
      Usage::
  
          @route('/doc/<document>')
          class MyModelView(UrlForView, InstanceLoader, ModelView):
              model = MyModel
              route_model_map = {'document': 'url_id_name'}
  
              @route('')
              @url_change_check
              @render_with(json=True)
              def view(self):
                  return self.obj.current_access()
  
      If the decorator is required for all view handlers in the class, use
      :class:`UrlChangeCheck`.