registering user works

Lab01/app/database/types.go

@@ -1,6 +1,8 @@
 package database
 
-import "gorm.io/gorm"
+import (
+	"gorm.io/gorm"
+)
 
 type Database struct {
 	ORM      *gorm.DB
@@ -8,7 +10,7 @@ type Database struct {
 }
 
 type User struct {
-	ID       int
-	Username string
-	Password string
+	Username  string `gorm:"primaryKey"`
+	Password  string
+	CreatedAt int64 `gorm:"autoCreateTime"`
 }