package en import ( "fmt" "log" "reflect" "strconv" "strings" "time" "github.com/go-playground/locales" ut "github.com/go-playground/universal-translator" "gopkg.in/go-playground/validator.v9" ) // RegisterDefaultTranslations registers a set of default translations // for all built in tag's in validator; you may add your own as desired. func RegisterDefaultTranslations(v *validator.Validate, trans ut.Translator) (err error) { translations := []struct { tag string translation string override bool customRegisFunc validator.RegisterTranslationsFunc customTransFunc validator.TranslationFunc }{ { tag: "required", translation: "{0} is a required field", override: false, }, { tag: "len", customRegisFunc: func(ut ut.Translator) (err error) { if err = ut.Add("len-string", "{0} must be {1} in length", false); err != nil { return } if err = ut.AddCardinal("len-string-character", "{0} character", locales.PluralRuleOne, false); err != nil { return } if err = ut.AddCardinal("len-string-character", "{0} characters", locales.PluralRuleOther, false); err != nil { return } if err = ut.Add("len-number", "{0} must be equal to {1}", false); err != nil { return } if err = ut.Add("len-items", "{0} must contain {1}", false); err != nil { return } if err = ut.AddCardinal("len-items-item", "{0} item", locales.PluralRuleOne, false); err != nil { return } if err = ut.AddCardinal("len-items-item", "{0} items", locales.PluralRuleOther, false); err != nil { return } return }, customTransFunc: func(ut ut.Translator, fe validator.FieldError) string { var err error var t string var digits uint64 if idx := strings.Index(fe.Param(), "."); idx != -1 { digits = uint64(len(fe.Param()[idx+1:])) } f64, err := strconv.ParseFloat(fe.Param(), 64) if err != nil { goto END } switch fe.Kind() { case reflect.String: var c string c, err = ut.C("len-string-character", f64, digits, ut.FmtNumber(f64, digits)) if err != nil { goto END } t, err = ut.T("len-string", fe.Field(), c) case reflect.Slice, reflect.Map, reflect.Array: var c string c, err = ut.C("len-items-item", f64, digits, ut.FmtNumber(f64, digits)) if err != nil { goto END } t, err = ut.T("len-items", fe.Field(), c) default: t, err = ut.T("len-number", fe.Field(), ut.FmtNumber(f64, digits)) } END: if err != nil { fmt.Printf("warning: error translating FieldError: %s", err) return fe.(error).Error() } return t }, }, { tag: "min", customRegisFunc: func(ut ut.Translator) (err error) { if err = ut.Add("min-string", "{0} must be at least {1} in length", false); err != nil { return } if err = ut.AddCardinal("min-string-character", "{0} character", locales.PluralRuleOne, false); err != nil { return } if err = ut.AddCardinal("min-string-character", "{0} characters", locales.PluralRuleOther, false); err != nil { return } if err = ut.Add("min-number", "{0} must be {1} or greater", false); err != nil { return } if err = ut.Add("min-items", "{0} must contain at least {1}", false); err != nil { return } if err = ut.AddCardinal("min-items-item", "{0} item", locales.PluralRuleOne, false); err != nil { return } if err = ut.AddCardinal("min-items-item", "{0} items", locales.PluralRuleOther, false); err != nil { return } return }, customTransFunc: func(ut ut.Translator, fe validator.FieldError) string { var err error var t string var digits uint64 if idx := strings.Index(fe.Param(), "."); idx != -1 { digits = uint64(len(fe.Param()[idx+1:])) } f64, err := strconv.ParseFloat(fe.Param(), 64) if err != nil { goto END } switch fe.Kind() { case reflect.String: var c string c, err = ut.C("min-string-character", f64, digits, ut.FmtNumber(f64, digits)) if err != nil { goto END } t, err = ut.T("min-string", fe.Field(), c) case reflect.Slice, reflect.Map, reflect.Array: var c string c, err = ut.C("min-items-item", f64, digits, ut.FmtNumber(f64, digits)) if err != nil { goto END } t, err = ut.T("min-items", fe.Field(), c) default: t, err = ut.T("min-number", fe.Field(), ut.FmtNumber(f64, digits)) } END: if err != nil { fmt.Printf("warning: error translating FieldError: %s", err) return fe.(error).Error() } return t }, }, { tag: "max", customRegisFunc: func(ut ut.Translator) (err error) { if err = ut.Add("max-string", "{0} must be a maximum of {1} in length", false); err != nil { return } if err = ut.AddCardinal("max-string-character", "{0} character", locales.PluralRuleOne, false); err != nil { return } if err = ut.AddCardinal("max-string-character", "{0} characters", locales.PluralRuleOther, false); err != nil { return } if err = ut.Add("max-number", "{0} must be {1} or less", false); err != nil { return } if err = ut.Add("max-items", "{0} must contain at maximum {1}", false); err != nil { return } if err = ut.AddCardinal("max-items-item", "{0} item", locales.PluralRuleOne, false); err != nil { return } if err = ut.AddCardinal("max-items-item", "{0} items", locales.PluralRuleOther, false); err != nil { return } return }, customTransFunc: func(ut ut.Translator, fe validator.FieldError) string { var err error var t string var digits uint64 if idx := strings.Index(fe.Param(), "."); idx != -1 { digits = uint64(len(fe.Param()[idx+1:])) } f64, err := strconv.ParseFloat(fe.Param(), 64) if err != nil { goto END } switch fe.Kind() { case reflect.String: var c string c, err = ut.C("max-string-character", f64, digits, ut.FmtNumber(f64, digits)) if err != nil { goto END } t, err = ut.T("max-string", fe.Field(), c) case reflect.Slice, reflect.Map, reflect.Array: var c string c, err = ut.C("max-items-item", f64, digits, ut.FmtNumber(f64, digits)) if err != nil { goto END } t, err = ut.T("max-items", fe.Field(), c) default: t, err = ut.T("max-number", fe.Field(), ut.FmtNumber(f64, digits)) } END: if err != nil { fmt.Printf("warning: error translating FieldError: %s", err) return fe.(error).Error() } return t }, }, { tag: "eq", translation: "{0} is not equal to {1}", override: false, customTransFunc: func(ut ut.Translator, fe validator.FieldError) string { t, err := ut.T(fe.Tag(), fe.Field(), fe.Param()) if err != nil { fmt.Printf("warning: error translating FieldError: %#v", fe) return fe.(error).Error() } return t }, }, { tag: "ne", translation: "{0} should not be equal to {1}", override: false, customTransFunc: func(ut ut.Translator, fe validator.FieldError) string { t, err := ut.T(fe.Tag(), fe.Field(), fe.Param()) if err != nil { fmt.Printf("warning: error translating FieldError: %#v", fe) return fe.(error).Error() } return t }, }, { tag: "lt", customRegisFunc: func(ut ut.Translator) (err error) { if err = ut.Add("lt-string", "{0} must be less than {1} in length", false); err != nil { return } if err = ut.AddCardinal("lt-string-character", "{0} character", locales.PluralRuleOne, false); err != nil { return } if err = ut.AddCardinal("lt-string-character", "{0} characters", locales.PluralRuleOther, false); err != nil { return } if err = ut.Add("lt-number", "{0} must be less than {1}", false); err != nil { return } if err = ut.Add("lt-items", "{0} must contain less than {1}", false); err != nil { return } if err = ut.AddCardinal("lt-items-item", "{0} item", locales.PluralRuleOne, false); err != nil { return } if err = ut.AddCardinal("lt-items-item", "{0} items", locales.PluralRuleOther, false); err != nil { return } if err = ut.Add("lt-datetime", "{0} must be less than the current Date & Time", false); err != nil { return } return }, customTransFunc: func(ut ut.Translator, fe validator.FieldError) string { var err error var t string var f64 float64 var digits uint64 fn := func() (err error) { if idx := strings.Index(fe.Param(), "."); idx != -1 { digits = uint64(len(fe.Param()[idx+1:])) } f64, err = strconv.ParseFloat(fe.Param(), 64) return } switch fe.Kind() { case reflect.String: var c string err = fn() if err != nil { goto END } c, err = ut.C("lt-string-character", f64, digits, ut.FmtNumber(f64, digits)) if err != nil { goto END } t, err = ut.T("lt-string", fe.Field(), c) case reflect.Slice, reflect.Map, reflect.Array: var c string err = fn() if err != nil { goto END } c, err = ut.C("lt-items-item", f64, digits, ut.FmtNumber(f64, digits)) if err != nil { goto END } t, err = ut.T("lt-items", fe.Field(), c) case reflect.Struct: if fe.Type() != reflect.TypeOf(time.Time{}) { err = fmt.Errorf("tag '%s' cannot be used on a struct type.", fe.Tag()) } t, err = ut.T("lt-datetime", fe.Field()) default: err = fn() if err != nil { goto END } t, err = ut.T("lt-number", fe.Field(), ut.FmtNumber(f64, digits)) } END: if err != nil { fmt.Printf("warning: error translating FieldError: %s", err) return fe.(error).Error() } return t }, }, { tag: "lte", customRegisFunc: func(ut ut.Translator) (err error) { if err = ut.Add("lte-string", "{0} must be at maximum {1} in length", false); err != nil { return } if err = ut.AddCardinal("lte-string-character", "{0} character", locales.PluralRuleOne, false); err != nil { return } if err = ut.AddCardinal("lte-string-character", "{0} characters", locales.PluralRuleOther, false); err != nil { return } if err = ut.Add("lte-number", "{0} must be {1} or less", false); err != nil { return } if err = ut.Add("lte-items", "{0} must contain at maximum {1}", false); err != nil { return } if err = ut.AddCardinal("lte-items-item", "{0} item", locales.PluralRuleOne, false); err != nil { return } if err = ut.AddCardinal("lte-items-item", "{0} items", locales.PluralRuleOther, false); err != nil { return } if err = ut.Add("lte-datetime", "{0} must be less than or equal to the current Date & Time", false); err != nil { return } return }, customTransFunc: func(ut ut.Translator, fe validator.FieldError) string { var err error var t string var f64 float64 var digits uint64 fn := func() (err error) { if idx := strings.Index(fe.Param(), "."); idx != -1 { digits = uint64(len(fe.Param()[idx+1:])) } f64, err = strconv.ParseFloat(fe.Param(), 64) return } switch fe.Kind() { case reflect.String: var c string err = fn() if err != nil { goto END } c, err = ut.C("lte-string-character", f64, digits, ut.FmtNumber(f64, digits)) if err != nil { goto END } t, err = ut.T("lte-string", fe.Field(), c) case reflect.Slice, reflect.Map, reflect.Array: var c string err = fn() if err != nil { goto END } c, err = ut.C("lte-items-item", f64, digits, ut.FmtNumber(f64, digits)) if err != nil { goto END } t, err = ut.T("lte-items", fe.Field(), c) case reflect.Struct: if fe.Type() != reflect.TypeOf(time.Time{}) { err = fmt.Errorf("tag '%s' cannot be used on a struct type.", fe.Tag()) } t, err = ut.T("lte-datetime", fe.Field()) default: err = fn() if err != nil { goto END } t, err = ut.T("lte-number", fe.Field(), ut.FmtNumber(f64, digits)) } END: if err != nil { fmt.Printf("warning: error translating FieldError: %s", err) return fe.(error).Error() } return t }, }, { tag: "gt", customRegisFunc: func(ut ut.Translator) (err error) { if err = ut.Add("gt-string", "{0} must be greater than {1} in length", false); err != nil { return } if err = ut.AddCardinal("gt-string-character", "{0} character", locales.PluralRuleOne, false); err != nil { return } if err = ut.AddCardinal("gt-string-character", "{0} characters", locales.PluralRuleOther, false); err != nil { return } if err = ut.Add("gt-number", "{0} must be greater than {1}", false); err != nil { return } if err = ut.Add("gt-items", "{0} must contain more than {1}", false); err != nil { return } if err = ut.AddCardinal("gt-items-item", "{0} item", locales.PluralRuleOne, false); err != nil { return } if err = ut.AddCardinal("gt-items-item", "{0} items", locales.PluralRuleOther, false); err != nil { return } if err = ut.Add("gt-datetime", "{0} must be greater than the current Date & Time", false); err != nil { return } return }, customTransFunc: func(ut ut.Translator, fe validator.FieldError) string { var err error var t string var f64 float64 var digits uint64 fn := func() (err error) { if idx := strings.Index(fe.Param(), "."); idx != -1 { digits = uint64(len(fe.Param()[idx+1:])) } f64, err = strconv.ParseFloat(fe.Param(), 64) return } switch fe.Kind() { case reflect.String: var c string err = fn() if err != nil { goto END } c, err = ut.C("gt-string-character", f64, digits, ut.FmtNumber(f64, digits)) if err != nil { goto END } t, err = ut.T("gt-string", fe.Field(), c) case reflect.Slice, reflect.Map, reflect.Array: var c string err = fn() if err != nil { goto END } c, err = ut.C("gt-items-item", f64, digits, ut.FmtNumber(f64, digits)) if err != nil { goto END } t, err = ut.T("gt-items", fe.Field(), c) case reflect.Struct: if fe.Type() != reflect.TypeOf(time.Time{}) { err = fmt.Errorf("tag '%s' cannot be used on a struct type.", fe.Tag()) } t, err = ut.T("gt-datetime", fe.Field()) default: err = fn() if err != nil { goto END } t, err = ut.T("gt-number", fe.Field(), ut.FmtNumber(f64, digits)) } END: if err != nil { fmt.Printf("warning: error translating FieldError: %s", err) return fe.(error).Error() } return t }, }, { tag: "gte", customRegisFunc: func(ut ut.Translator) (err error) { if err = ut.Add("gte-string", "{0} must be at least {1} in length", false); err != nil { return } if err = ut.AddCardinal("gte-string-character", "{0} character", locales.PluralRuleOne, false); err != nil { return } if err = ut.AddCardinal("gte-string-character", "{0} characters", locales.PluralRuleOther, false); err != nil { return } if err = ut.Add("gte-number", "{0} must be {1} or greater", false); err != nil { return } if err = ut.Add("gte-items", "{0} must contain at least {1}", false); err != nil { return } if err = ut.AddCardinal("gte-items-item", "{0} item", locales.PluralRuleOne, false); err != nil { return } if err = ut.AddCardinal("gte-items-item", "{0} items", locales.PluralRuleOther, false); err != nil { return } if err = ut.Add("gte-datetime", "{0} must be greater than or equal to the current Date & Time", false); err != nil { return } return }, customTransFunc: func(ut ut.Translator, fe validator.FieldError) string { var err error var t string var f64 float64 var digits uint64 fn := func() (err error) { if idx := strings.Index(fe.Param(), "."); idx != -1 { digits = uint64(len(fe.Param()[idx+1:])) } f64, err = strconv.ParseFloat(fe.Param(), 64) return } switch fe.Kind() { case reflect.String: var c string err = fn() if err != nil { goto END } c, err = ut.C("gte-string-character", f64, digits, ut.FmtNumber(f64, digits)) if err != nil { goto END } t, err = ut.T("gte-string", fe.Field(), c) case reflect.Slice, reflect.Map, reflect.Array: var c string err = fn() if err != nil { goto END } c, err = ut.C("gte-items-item", f64, digits, ut.FmtNumber(f64, digits)) if err != nil { goto END } t, err = ut.T("gte-items", fe.Field(), c) case reflect.Struct: if fe.Type() != reflect.TypeOf(time.Time{}) { err = fmt.Errorf("tag '%s' cannot be used on a struct type.", fe.Tag()) } t, err = ut.T("gte-datetime", fe.Field()) default: err = fn() if err != nil { goto END } t, err = ut.T("gte-number", fe.Field(), ut.FmtNumber(f64, digits)) } END: if err != nil { fmt.Printf("warning: error translating FieldError: %s", err) return fe.(error).Error() } return t }, }, { tag: "eqfield", translation: "{0} must be equal to {1}", override: false, customTransFunc: func(ut ut.Translator, fe validator.FieldError) string { t, err := ut.T(fe.Tag(), fe.Field(), fe.Param()) if err != nil { log.Printf("warning: error translating FieldError: %#v", fe) return fe.(error).Error() } return t }, }, { tag: "eqcsfield", translation: "{0} must be equal to {1}", override: false, customTransFunc: func(ut ut.Translator, fe validator.FieldError) string { t, err := ut.T(fe.Tag(), fe.Field(), fe.Param()) if err != nil { log.Printf("warning: error translating FieldError: %#v", fe) return fe.(error).Error() } return t }, }, { tag: "necsfield", translation: "{0} cannot be equal to {1}", override: false, customTransFunc: func(ut ut.Translator, fe validator.FieldError) string { t, err := ut.T(fe.Tag(), fe.Field(), fe.Param()) if err != nil { log.Printf("warning: error translating FieldError: %#v", fe) return fe.(error).Error() } return t }, }, { tag: "gtcsfield", translation: "{0} must be greater than {1}", override: false, customTransFunc: func(ut ut.Translator, fe validator.FieldError) string { t, err := ut.T(fe.Tag(), fe.Field(), fe.Param()) if err != nil { log.Printf("warning: error translating FieldError: %#v", fe) return fe.(error).Error() } return t }, }, { tag: "gtecsfield", translation: "{0} must be greater than or equal to {1}", override: false, customTransFunc: func(ut ut.Translator, fe validator.FieldError) string { t, err := ut.T(fe.Tag(), fe.Field(), fe.Param()) if err != nil { log.Printf("warning: error translating FieldError: %#v", fe) return fe.(error).Error() } return t }, }, { tag: "ltcsfield", translation: "{0} must be less than {1}", override: false, customTransFunc: func(ut ut.Translator, fe validator.FieldError) string { t, err := ut.T(fe.Tag(), fe.Field(), fe.Param()) if err != nil { log.Printf("warning: error translating FieldError: %#v", fe) return fe.(error).Error() } return t }, }, { tag: "ltecsfield", translation: "{0} must be less than or equal to {1}", override: false, customTransFunc: func(ut ut.Translator, fe validator.FieldError) string { t, err := ut.T(fe.Tag(), fe.Field(), fe.Param()) if err != nil { log.Printf("warning: error translating FieldError: %#v", fe) return fe.(error).Error() } return t }, }, { tag: "nefield", translation: "{0} cannot be equal to {1}", override: false, customTransFunc: func(ut ut.Translator, fe validator.FieldError) string { t, err := ut.T(fe.Tag(), fe.Field(), fe.Param()) if err != nil { log.Printf("warning: error translating FieldError: %#v", fe) return fe.(error).Error() } return t }, }, { tag: "gtfield", translation: "{0} must be greater than {1}", override: false, customTransFunc: func(ut ut.Translator, fe validator.FieldError) string { t, err := ut.T(fe.Tag(), fe.Field(), fe.Param()) if err != nil { log.Printf("warning: error translating FieldError: %#v", fe) return fe.(error).Error() } return t }, }, { tag: "gtefield", translation: "{0} must be greater than or equal to {1}", override: false, customTransFunc: func(ut ut.Translator, fe validator.FieldError) string { t, err := ut.T(fe.Tag(), fe.Field(), fe.Param()) if err != nil { log.Printf("warning: error translating FieldError: %#v", fe) return fe.(error).Error() } return t }, }, { tag: "ltfield", translation: "{0} must be less than {1}", override: false, customTransFunc: func(ut ut.Translator, fe validator.FieldError) string { t, err := ut.T(fe.Tag(), fe.Field(), fe.Param()) if err != nil { log.Printf("warning: error translating FieldError: %#v", fe) return fe.(error).Error() } return t }, }, { tag: "ltefield", translation: "{0} must be less than or equal to {1}", override: false, customTransFunc: func(ut ut.Translator, fe validator.FieldError) string { t, err := ut.T(fe.Tag(), fe.Field(), fe.Param()) if err != nil { log.Printf("warning: error translating FieldError: %#v", fe) return fe.(error).Error() } return t }, }, { tag: "alpha", translation: "{0} can only contain alphabetic characters", override: false, }, { tag: "alphanum", translation: "{0} can only contain alphanumeric characters", override: false, }, { tag: "numeric", translation: "{0} must be a valid numeric value", override: false, }, { tag: "number", translation: "{0} must be a valid number", override: false, }, { tag: "hexadecimal", translation: "{0} must be a valid hexadecimal", override: false, }, { tag: "hexcolor", translation: "{0} must be a valid HEX color", override: false, }, { tag: "rgb", translation: "{0} must be a valid RGB color", override: false, }, { tag: "rgba", translation: "{0} must be a valid RGBA color", override: false, }, { tag: "hsl", translation: "{0} must be a valid HSL color", override: false, }, { tag: "hsla", translation: "{0} must be a valid HSLA color", override: false, }, { tag: "email", translation: "{0} must be a valid email address", override: false, }, { tag: "url", translation: "{0} must be a valid URL", override: false, }, { tag: "uri", translation: "{0} must be a valid URI", override: false, }, { tag: "base64", translation: "{0} must be a valid Base64 string", override: false, }, { tag: "contains", translation: "{0} must contain the text '{1}'", override: false, customTransFunc: func(ut ut.Translator, fe validator.FieldError) string { t, err := ut.T(fe.Tag(), fe.Field(), fe.Param()) if err != nil { log.Printf("warning: error translating FieldError: %#v", fe) return fe.(error).Error() } return t }, }, { tag: "containsany", translation: "{0} must contain at least one of the following characters '{1}'", override: false, customTransFunc: func(ut ut.Translator, fe validator.FieldError) string { t, err := ut.T(fe.Tag(), fe.Field(), fe.Param()) if err != nil { log.Printf("warning: error translating FieldError: %#v", fe) return fe.(error).Error() } return t }, }, { tag: "excludes", translation: "{0} cannot contain the text '{1}'", override: false, customTransFunc: func(ut ut.Translator, fe validator.FieldError) string { t, err := ut.T(fe.Tag(), fe.Field(), fe.Param()) if err != nil { log.Printf("warning: error translating FieldError: %#v", fe) return fe.(error).Error() } return t }, }, { tag: "excludesall", translation: "{0} cannot contain any of the following characters '{1}'", override: false, customTransFunc: func(ut ut.Translator, fe validator.FieldError) string { t, err := ut.T(fe.Tag(), fe.Field(), fe.Param()) if err != nil { log.Printf("warning: error translating FieldError: %#v", fe) return fe.(error).Error() } return t }, }, { tag: "excludesrune", translation: "{0} cannot contain the following '{1}'", override: false, customTransFunc: func(ut ut.Translator, fe validator.FieldError) string { t, err := ut.T(fe.Tag(), fe.Field(), fe.Param()) if err != nil { log.Printf("warning: error translating FieldError: %#v", fe) return fe.(error).Error() } return t }, }, { tag: "isbn", translation: "{0} must be a valid ISBN number", override: false, }, { tag: "isbn10", translation: "{0} must be a valid ISBN-10 number", override: false, }, { tag: "isbn13", translation: "{0} must be a valid ISBN-13 number", override: false, }, { tag: "uuid", translation: "{0} must be a valid UUID", override: false, }, { tag: "uuid3", translation: "{0} must be a valid version 3 UUID", override: false, }, { tag: "uuid4", translation: "{0} must be a valid version 4 UUID", override: false, }, { tag: "uuid5", translation: "{0} must be a valid version 5 UUID", override: false, }, { tag: "ascii", translation: "{0} must contain only ascii characters", override: false, }, { tag: "printascii", translation: "{0} must contain only printable ascii characters", override: false, }, { tag: "multibyte", translation: "{0} must contain multibyte characters", override: false, }, { tag: "datauri", translation: "{0} must contain a valid Data URI", override: false, }, { tag: "latitude", translation: "{0} must contain valid latitude coordinates", override: false, }, { tag: "longitude", translation: "{0} must contain a valid longitude coordinates", override: false, }, { tag: "ssn", translation: "{0} must be a valid SSN number", override: false, }, { tag: "ipv4", translation: "{0} must be a valid IPv4 address", override: false, }, { tag: "ipv6", translation: "{0} must be a valid IPv6 address", override: false, }, { tag: "ip", translation: "{0} must be a valid IP address", override: false, }, { tag: "cidr", translation: "{0} must contain a valid CIDR notation", override: false, }, { tag: "cidrv4", translation: "{0} must contain a valid CIDR notation for an IPv4 address", override: false, }, { tag: "cidrv6", translation: "{0} must contain a valid CIDR notation for an IPv6 address", override: false, }, { tag: "tcp_addr", translation: "{0} must be a valid TCP address", override: false, }, { tag: "tcp4_addr", translation: "{0} must be a valid IPv4 TCP address", override: false, }, { tag: "tcp6_addr", translation: "{0} must be a valid IPv6 TCP address", override: false, }, { tag: "udp_addr", translation: "{0} must be a valid UDP address", override: false, }, { tag: "udp4_addr", translation: "{0} must be a valid IPv4 UDP address", override: false, }, { tag: "udp6_addr", translation: "{0} must be a valid IPv6 UDP address", override: false, }, { tag: "ip_addr", translation: "{0} must be a resolvable IP address", override: false, }, { tag: "ip4_addr", translation: "{0} must be a resolvable IPv4 address", override: false, }, { tag: "ip6_addr", translation: "{0} must be a resolvable IPv6 address", override: false, }, { tag: "unix_addr", translation: "{0} must be a resolvable UNIX address", override: false, }, { tag: "mac", translation: "{0} must contain a valid MAC address", override: false, }, { tag: "iscolor", translation: "{0} must be a valid color", override: false, }, } for _, t := range translations { if t.customTransFunc != nil && t.customRegisFunc != nil { err = v.RegisterTranslation(t.tag, trans, t.customRegisFunc, t.customTransFunc) } else if t.customTransFunc != nil && t.customRegisFunc == nil { err = v.RegisterTranslation(t.tag, trans, registrationFunc(t.tag, t.translation, t.override), t.customTransFunc) } else if t.customTransFunc == nil && t.customRegisFunc != nil { err = v.RegisterTranslation(t.tag, trans, t.customRegisFunc, translateFunc) } else { err = v.RegisterTranslation(t.tag, trans, registrationFunc(t.tag, t.translation, t.override), translateFunc) } if err != nil { return } } return } func registrationFunc(tag string, translation string, override bool) validator.RegisterTranslationsFunc { return func(ut ut.Translator) (err error) { if err = ut.Add(tag, translation, override); err != nil { return } return } } func translateFunc(ut ut.Translator, fe validator.FieldError) string { t, err := ut.T(fe.Tag(), fe.Field()) if err != nil { log.Printf("warning: error translating FieldError: %#v", fe) return fe.(error).Error() } return t }