def export(string, template=None, **extra):
    """
    Decorator for registering view functions and adding
    templates to it.
    """

    def wrapped(f):
        endpoint = (f.__module__ + "." + f.__name__)[16:]
        if template is not None:
            old_f = f

            def f(**kwargs):
                rv = old_f(**kwargs)
                if not isinstance(rv, Response):
                    rv = TemplateResponse(template, **(rv or {}))
                return rv

            f.__name__ = old_f.__name__
            f.__doc__ = old_f.__doc__
        exported_views[endpoint] = (f, string, extra)
        return f

    return wrapped
Decorator for registering view functions and adding
    templates to it.