add validation

main.go

@@ -12,6 +12,8 @@ import (
 	"gorm.io/gorm/logger"
 	"log"
 	"os"
+	"reflect"
+	"strings"
 	"time"
 )
 
@@ -40,6 +42,13 @@ func main() {
 	db.AutoMigrate(&model.Event{})
 
 	validate := validator.New()
+	validate.RegisterTagNameFunc(func(fld reflect.StructField) string {
+		name := strings.SplitN(fld.Tag.Get("json"), ",", 2)[0]
+		if name == "-" {
+			return ""
+		}
+		return name
+	})
 
 	var h = &handler.Handler{DB: db, Validator: validate}