example.py

admin_route = pipe()

@admin_route
def extract_data(request: HttpRequest) -> Ns:
    return Ns(
        user=request.cookies.get('user'),
        authcookie=request.cookies.get('auth'),
    )


@admin_route
def get_user_from_db(state: Ns) -> Union[Ns, Err]:
    sql_result = run_sql(
        'SELECT full_name, is_admin FROM User WHERE login = ? AND cookie = ?',
        state.user,
        state.authcookie,
    )
    if sql_result is None:
        return Err('user not found')
    return Ns(
        full_name=sql_result[0],
        is_admin=sql_result[1],
    )


@admin_route
def form_response(state: Ns) -> Union[Response, Err]:
    if not state.is_admin:
        Err('access denied')

    return format_template('template.html', full_name=state.full_name) 

app.route(
    '/admin',
    admin_route
)

# neomake: skip