Function OptionalInt

internal/httputil/httputil.go:244–254

OptionalInt returns the integer in req given by param, or 0 if not present. If the form value is not an integer, it panics with a a value understood by Recover or RecoverJSON.

(req *http.Request, param string)

// OptionalInt returns the integer in req given by param, or 0 if not present.
// If the form value is not an integer, it panics with a a value understood by Recover or RecoverJSON.
func OptionalInt(req *http.Request, param string) int {
	v := req.FormValue(param)
	if v == "" {
		return 0
	}
	i, err := strconv.Atoi(v)
	if err != nil {
		panic(InvalidParameterError(param))
	}
	return i
}

// ServeJSONError sends a JSON error response to rw for the provided
// error value.