i18n.go

package validatorx

import (
	`strings`

	`github.com/go-playground/validator/v10`
	`github.com/storezhang/gox`
)

func I18n(lang string, errs validator.ValidationErrors) (i18n validator.ValidationErrorsTranslations) {
	sep := "_"
	if strings.Contains(lang, "-") {
		sep = "-"
	}

	splits := strings.Split(lang, sep)
	for i := 0; i < len(splits); i++ {
		if t, s := translator.FindTranslator(lang); s {
			i18n = errs.Translate(t)

			break
		} else {
			if index := strings.LastIndex(lang, sep); -1 == index {
				break
			} else {
				lang = lang[0:index]
			}
		}
	}
	if nil == i18n {
		if t, s := translator.GetTranslator("zh"); s {
			i18n = errs.Translate(t)
		}
	}

	// 得到的国际化字符串是一个带请求体的键值，类似于LoginReq.Password：错误消息
	// 而我们需要的是password: 错误消息
	newI18n := make(map[string]string, len(i18n))
	for field, msg := range i18n {
		newField := gox.InitialLowercase(gox.CamelName(field[strings.IndexRune(field, '.')+1:]))
		newI18n[newField] = msg
		// 删除原来的错误消息，避免前端混乱
		delete(i18n, field)
	}
	i18n = newI18n

	return
}