digit.go

package validation

import "regexp"

var digitsRegex = regexp.MustCompile(`^[0-9]*$`)

// DigitsValidator the field under validation must be a string that
// only contains digits.
type DigitsValidator struct {
	RegexValidator
}

// Name returns the string name of the validator.
func (v *DigitsValidator) Name() string { return "digits" }

// Digits the field under validation must be a string that only contains digits.
func Digits() *DigitsValidator {
	return &DigitsValidator{RegexValidator: RegexValidator{Regexp: digitsRegex}}
}