Repository: oppia/oppia
File: main.py (Python)

Code before:
        handler: RequestHandler. A callable to handle the route.
        defaults: dict. Optional defaults parameter to be passed
            into the RedirectRoute object.

    Returns:
        RedirectRoute. A RedirectRoute object for redirects.
    """
    if defaults is None:
        defaults = {}
    name = regex_route.replace('/', '_')
    return routes.RedirectRoute(
        regex_route, handler, name, strict_slash=True, defaults=defaults
    )


# Register the URLs with the classes responsible for handling them.
URLS = [
    get_redirect_route(
        '/<firebase_path:__/auth(?:/.*)?>', firebase.FirebaseProxyPage
    ),
    get_redirect_route(r'/_ah/warmup', WarmupPage),
    get_redirect_route(
        r'%s/can_access_story_viewer_page/<classroom_url_fragment>'
        r'/<topic_url_fragment>/<story_url_fragment>'
        % feconf.ACCESS_VALIDATION_HANDLER_PREFIX,
        access_validators.StoryViewerPageAccessValidationHandler,
    ),
    get_redirect_route(r'/splash', SplashRedirectPage),
    get_redirect_route(
        r'/internetconnectivityhandler', InternetConnectivityHandler
    ),
    get_redirect_route(r'/credits', pages.AboutRedirectPage),
    get_redirect_route(r'/participate', pages.TeachRedirectPage),
    get_redirect_route(r'/site_guidelines', pages.TeachRedirectPage),
    get_redirect_route(r'/forum', pages.ForumRedirectPage),
    # Access Validators.
    get_redirect_route(
        r'%s/can_access_classroom_page'
        % feconf.ACCESS_VALIDATION_HANDLER_PREFIX,
        access_validators.ClassroomAccessValidationHandler,
    ),
    get_redirect_route(
        r'%s/can_access_classrooms_page'
        % feconf.ACCESS_VALIDATION_HANDLER_PREFIX,
        access_validators.ClassroomsPageAccessValidationHandler,
    ),
    get_redirect_route(
        r'%s/can_access_collection_editor_page/<collection_id>'
        % feconf.ACCESS_VALIDATION_HANDLER_PREFIX,
        access_validators.CollectionEditorAccessValidationPage,
    ),

Review comment (suggestion):
I think this should be the correct path, right?

``<topic_url_fragment>/story/<story_url_fragment> ``

Code after:
        handler: RequestHandler. A callable to handle the route.
        defaults: dict. Optional defaults parameter to be passed
            into the RedirectRoute object.

    Returns:
        RedirectRoute. A RedirectRoute object for redirects.
    """
    if defaults is None:
        defaults = {}
    name = regex_route.replace('/', '_')
    return routes.RedirectRoute(
        regex_route, handler, name, strict_slash=True, defaults=defaults
    )


# Register the URLs with the classes responsible for handling them.
URLS = [
    get_redirect_route(
        '/<firebase_path:__/auth(?:/.*)?>', firebase.FirebaseProxyPage
    ),
    get_redirect_route(r'/_ah/warmup', WarmupPage),
    get_redirect_route(
        r'%s/can_access_story_viewer_page/<classroom_url_fragment>/<topic_url_fragment>/story/<story_url_fragment>'
        % feconf.ACCESS_VALIDATION_HANDLER_PREFIX,
        access_validators.StoryViewerPageAccessValidationHandler,
    ),
    get_redirect_route(r'/splash', SplashRedirectPage),
    get_redirect_route(
        r'/internetconnectivityhandler', InternetConnectivityHandler
    ),
    get_redirect_route(r'/credits', pages.AboutRedirectPage),
    get_redirect_route(r'/participate', pages.TeachRedirectPage),
    get_redirect_route(r'/site_guidelines', pages.TeachRedirectPage),
    get_redirect_route(r'/forum', pages.ForumRedirectPage),
    # Access Validators.
    get_redirect_route(
        r'%s/can_access_classroom_page'
        % feconf.ACCESS_VALIDATION_HANDLER_PREFIX,
        access_validators.ClassroomAccessValidationHandler,
    ),
    get_redirect_route(
        r'%s/can_access_classrooms_page'
        % feconf.ACCESS_VALIDATION_HANDLER_PREFIX,
        access_validators.ClassroomsPageAccessValidationHandler,
    ),
    get_redirect_route(
        r'%s/can_access_collection_editor_page/<collection_id>'
        % feconf.ACCESS_VALIDATION_HANDLER_PREFIX,
        access_validators.CollectionEditorAccessValidationPage,
    ),
    get_redirect_route(