UPDATE: new db

pkg/constants/regex.go

@@ -17,6 +17,7 @@ var (
 	EMAIL_REGEX            = regexp.MustCompile(`^[a-z0-9._%+\-]+@[a-z0-9.\-]+\.[a-z]{2,4}$`)
 	YOUTUBE_VIDEO_ID_REGEX = regexp.MustCompile(`(?:\/|v=|\/v\/|embed\/|watch\?v=|watch\?.+&v=)([\w-]{11})`)
 	BANK_INPUT             = regexp.MustCompile(`[_＿]{2,}`)
+	SLUG_REGEX             = regexp.MustCompile(`^[a-z0-9]+(?:-[a-z0-9]+)*$`)
 )
 
 func ValidatePassword(password string) error {
@@ -36,4 +37,4 @@ func ValidatePassword(password string) error {
 		return errors.New("password must contain at least one special character")
 	}
 	return nil
-}
+}

pkg/validator/validator.go

@@ -7,6 +7,8 @@ import (
 	"reflect"
 	"strings"
 
+	"history-api/pkg/constants"
+
 	"github.com/go-playground/validator/v10"
 	"github.com/gofiber/fiber/v3"
 	"github.com/google/uuid"
@@ -53,6 +55,14 @@ func init() {
 		}
 		return u.Version() == 7
 	})
+
+	validate.RegisterValidation("slug", func(fl validator.FieldLevel) bool {
+		val := fl.Field().String()
+		if val == "" {
+			return true
+		}
+		return constants.SLUG_REGEX.MatchString(val)
+	})
 }
 
 func isValidURL(s string) bool {