def return_validator_error(section):
    def decorator(func):
        def wrapped(*args, **kwargs):
            try:
                return func(*args, **kwargs)
            except pyiv.CheckerResult as e:
                cherrypy.response.status=400
                return {
                        "error_type":"RequestValidation",
                        "section":section,
                        "errors":e.error_msg(),
                }
        return wrapped
    return decorator

@return_validator_error("ref")
def api_edit(self, ref = None, values = None ):
    fake_delay()
    json = cherrypy.request.json
            
    if ref is None:
        ref = validator_ref( json["ref"] ).values

    return "actual result"