Function StringLength

x/errors/validation/string.go:53–69

StringLength accepts any string and returns a message if the length is not in the given range.

(min, max int)

// StringLength accepts any string and returns a message if the length is not in the given range.
func StringLength(min, max int) func(s string) string {
	return func(s string) string {
		n := len(s)

		if min == max {
			if n != min {
				return fmt.Sprintf("must be %d characters", min)
			}
		}

		if n < min || n > max {
			return fmt.Sprintf("must be between %d and %d characters", min, max)
		}

		return ""
	}
}