def METHOD_NAME(f):
    """
    Allows only Owner to access the event resources.
    :param f:
    :return:
    """
    @wraps(f)
    def decorated_function(*args, **kwargs):
        user = current_user
        if user.is_staff:
            return f(*args, **kwargs)
        if 'event_id' in kwargs and user.METHOD_NAME(kwargs['event_id']):
            return f(*args, **kwargs)
        raise ForbiddenError({'source': ''}, 'Owner access is required')
    return decorated_function