validat.go

package wed

import (
	"fmt"
	"net/http"

	"github.com/gin-gonic/gin"
	"github.com/gin-gonic/gin/binding"
	"github.com/go-playground/locales/en"
	"github.com/go-playground/locales/zh"
	ut "github.com/go-playground/universal-translator"
	"github.com/go-playground/validator/v10"
	enTranslations "github.com/go-playground/validator/v10/translations/en"
	chTranslations "github.com/go-playground/validator/v10/translations/zh"
)

var Trans ut.Translator

// loca 通常取决于 http 请求头的 'Accept-Language'
func translate(local string) (err error) {
	if v, ok := binding.Validator.Engine().(*validator.Validate); ok {
		zhT := zh.New() //chinese
		enT := en.New() //english
		uni := ut.New(enT, zhT, enT)

		var o bool
		Trans, o = uni.GetTranslator(local)
		if !o {
			return fmt.Errorf("uni.GetTranslator(%s) failed", local)
		}
		//register translate
		// 注册翻译器
		switch local {
		case "en":
			err = enTranslations.RegisterDefaultTranslations(v, Trans)
		case "zh":
			err = chTranslations.RegisterDefaultTranslations(v, Trans)
		default:
			err = enTranslations.RegisterDefaultTranslations(v, Trans)
		}
		return
	}
	return
}

func init() {
	if err := translate("zh"); err != nil {
		fmt.Println("验证器加载失败:", err)
		return
	}
}

//绑定校验
func BindErr(c *gin.Context, err error) {
	errs, ok := err.(validator.ValidationErrors)
	if !ok {
		c.JSON(http.StatusOK, gin.H{
			"code": 2,
			"msg":  err.Error(), // 非validator.ValidationErrors类型错误直接返回
		})
		return
	}
	c.JSON(http.StatusOK, gin.H{
		"code": 1,
		"msg":  errs.Translate(Trans),
	})
}