105 lines
2.4 KiB
Go
105 lines
2.4 KiB
Go
// Package validator use for valiate struct
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package validator
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import (
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"context"
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"reflect"
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"github.com/go-playground/locales/en"
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"github.com/go-playground/locales/zh"
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ut "github.com/go-playground/universal-translator"
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"github.com/go-playground/validator/v10"
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en_translations "github.com/go-playground/validator/v10/translations/en"
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zh_translations "github.com/go-playground/validator/v10/translations/zh"
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"github.com/samber/lo"
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"git.ifooth.com/common/pkg/i18n"
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"git.ifooth.com/common/pkg/util"
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)
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var (
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validate *validator.Validate
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uni *ut.UniversalTranslator
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defaultTrans ut.Translator
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zhTrans ut.Translator
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)
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// ValidationError 校验错误
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type ValidationError struct {
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ctx context.Context
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rawErr error
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}
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// Validator 实现了 Validate 接口自定义调用
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type Validator interface {
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Validate() error
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}
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func (e *ValidationError) getTranslator() ut.Translator {
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acceptLang, ok := i18n.GetLang(e.ctx)
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if ok && acceptLang == "zh" {
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return zhTrans
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}
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return defaultTrans
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}
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// Error error iface
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func (e *ValidationError) Error() string {
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if _, ok := e.rawErr.(*validator.InvalidValidationError); ok {
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return e.rawErr.Error()
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}
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errs := e.rawErr.(validator.ValidationErrors)
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// 只返回单个错误
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for _, ve := range errs {
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return ve.Translate(e.getTranslator())
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}
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return e.rawErr.Error()
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}
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// Struct 通过 validate tag 校验结构体, Validate 校验需要传入指针类型
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func Struct(ctx context.Context, s any) error {
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err := validate.StructCtx(ctx, s)
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if err != nil {
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return &ValidationError{ctx: ctx, rawErr: err}
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}
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// 实现了 Validate 接口自定义调用
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if v, ok := s.(Validator); ok {
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return v.Validate()
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}
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return nil
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}
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// readableTagName 返回可读的json/req校验字段名称, 唯一性由codec校验
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func readableTagName(field reflect.StructField) string {
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name := util.GetTagName(field, "json")
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if name != "" && name != "-" {
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return name
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}
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name = util.GetTagName(field, "req")
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if name != "" && name != "-" {
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return name
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}
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return ""
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}
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func init() {
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validate = validator.New(validator.WithRequiredStructEnabled())
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validate.RegisterTagNameFunc(readableTagName)
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// 默认使用英文
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en := en.New()
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zh := zh.New()
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uni = ut.New(en, en, zh)
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defaultTrans, _ = uni.GetTranslator("en")
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lo.Must0(en_translations.RegisterDefaultTranslations(validate, defaultTrans))
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zhTrans, _ = uni.GetTranslator("zh")
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lo.Must0(zh_translations.RegisterDefaultTranslations(validate, zhTrans))
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}
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