def render_all_levels(show_accessibles=False):
    from c3nav.mapdata.models.section import Section
    from c3nav.mapdata.render.renderer import LevelRenderer  # noqa

    renderers = []
    for level in Section.objects.all():
        renderers.append(LevelRenderer(level, only_public=False))
        renderers.append(LevelRenderer(level, only_public=True))

    for renderer in renderers:
        renderer.render_base(show_accessibles=show_accessibles)

    for renderer in renderers:
        if not renderer.level.intermediate:
            renderer.render_simple()

    for renderer in renderers:
        if not renderer.level.intermediate:
            renderer.render_full()

    for renderer in renderers:
        if not renderer.level.intermediate:
            renderer.render_segments()