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package main
import (
"fmt"
"github.com/go-playground/locales/zh"
ut "github.com/go-playground/universal-translator"
"github.com/go-playground/validator/v10"
chTranslations "github.com/go-playground/validator/v10/translations/zh"
)
// User contains user information
type User struct {
FirstName string `validate:"required"`
LastName string `validate:"required"`
Age uint8 `validate:"gte=0,lte=130"`
Email string `validate:"required,email"`
FavouriteColor string `validate:"iscolor"` // alias for 'hexcolor|rgb|rgba|hsl|hsla'
Addresses []*Address `validate:"required,dive,required"` // a person can have a home and cottage...
}
// Address houses a users address information
type Address struct {
Street string `validate:"required"`
City string `validate:"required"`
Planet string `validate:"required"`
Phone string `validate:"required"`
}
// use a single instance , it caches struct info
var (
uni *ut.UniversalTranslator
validate *validator.Validate
)
func main() {
zh := zh.New()
uni = ut.New(zh, zh)
trans, _ := uni.GetTranslator("zh")
validate = validator.New()
chTranslations.RegisterDefaultTranslations(validate, trans)
translateAll(trans)
translateIndividual(trans)
translateOverride(trans) // yep you can specify your own in whatever locale you want!
}
func translateAll(trans ut.Translator) {
fmt.Println("---一个报错信息---")
type User struct {
Username string `validate:"required"`
Tagline string `validate:"required,lt=10"`
Tagline2 string `validate:"required,gt=1"`
}
user := User{
Username: "Joeybloggs",
Tagline: "This tagline is way too long.",
Tagline2: "1",
}
err := validate.Struct(user)
if err != nil {
// translate all error at once
errs := err.(validator.ValidationErrors)
// returns a map with key = namespace & value = translated error
// NOTICE: 2 errors are returned and you'll see something surprising
// translations are i18n aware!!!!
// eg. '10 characters' vs '1 character'
fmt.Println(errs.Translate(trans))
}
}
func translateIndividual(trans ut.Translator) {
type User struct {
Username string `validate:"required"`
}
var user User
err := validate.Struct(user)
if err != nil {
errs := err.(validator.ValidationErrors)
for _, e := range errs {
// can translate each error one at a time.
fmt.Println(e.Translate(trans))
}
}
}
func translateOverride(trans ut.Translator) {
validate.RegisterTranslation("required", trans, func(ut ut.Translator) error {
return ut.Add("required", "缺少参数 {0} ", true) // see universal-translator for details
}, func(ut ut.Translator, fe validator.FieldError) string {
t, _ := ut.T("required", fe.Field())
return t
})
type User struct {
Username string `validate:"required"`
}
var user User
err := validate.Struct(user)
if err != nil {
errs := err.(validator.ValidationErrors)
for _, e := range errs {
// can translate each error one at a time.
fmt.Println(e.Translate(trans))
}
}
}
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