feat: validation returns the original tag for the error field

internal/base/validator/validator.go

@@ -3,6 +3,7 @@ package validator
 import (
 	"errors"
 	"reflect"
+	"strings"
 
 	"github.com/answerdev/answer/internal/base/reason"
 	"github.com/answerdev/answer/internal/base/translator"
@@ -97,9 +98,19 @@ func (m *MyValidator) Check(value interface{}) (errField *ErrorField, err error)
 
 		for _, fieldError := range valErrors {
 			errField = &ErrorField{
-				Key:   translator.GlobalTrans.Tr(m.Lang, fieldError.Field()),
+				Key:   fieldError.Field(),
 				Value: fieldError.Translate(m.Tran),
 			}
+
+			// get original tag name from value for set err field key.
+			structNamespace := fieldError.StructNamespace()
+			_, fieldName, found := strings.Cut(structNamespace, ".")
+			if found {
+				originalTag := getObjectTagByFieldName(value, fieldName)
+				if len(originalTag) > 0 {
+					errField.Key = originalTag
+				}
+			}
 			return errField, myErrors.BadRequest(reason.RequestFormatError).WithMsg(fieldError.Translate(m.Tran))
 		}
 	}
@@ -117,3 +128,24 @@ func (m *MyValidator) Check(value interface{}) (errField *ErrorField, err error)
 type Checker interface {
 	Check() (errField *ErrorField, err error)
 }
+
+func getObjectTagByFieldName(obj interface{}, fieldName string) (tag string) {
+	defer func() {
+		if err := recover(); err != nil {
+			log.Error(err)
+		}
+	}()
+
+	objT := reflect.TypeOf(obj)
+	objT = objT.Elem()
+
+	structField, exists := objT.FieldByName(fieldName)
+	if !exists {
+		return ""
+	}
+	tag = structField.Tag.Get("json")
+	if len(tag) == 0 {
+		return structField.Tag.Get("form")
+	}
+	return tag
+}

internal/install/install_req.go

@@ -77,9 +77,9 @@ type InitBaseInfoReq struct {
 	SiteName      string `validate:"required,gt=0,lte=30" json:"site_name"`
 	SiteURL       string `validate:"required,gt=0,lte=512,url" json:"site_url"`
 	ContactEmail  string `validate:"required,email,gt=0,lte=500" json:"contact_email"`
-	AdminName     string `validate:"required,gt=4,lte=30" json:"admin_name"`
-	AdminPassword string `validate:"required,gte=8,lte=32" json:"admin_password"`
-	AdminEmail    string `validate:"required,email,gt=0,lte=500" json:"admin_email"`
+	AdminName     string `validate:"required,gt=4,lte=30" json:"name"`
+	AdminPassword string `validate:"required,gte=8,lte=32" json:"password"`
+	AdminEmail    string `validate:"required,email,gt=0,lte=500" json:"email"`
 }
 
 func (r *InitBaseInfoReq) FormatSiteUrl() {