diff --git a/data/models.go b/data/models.go
index 6fe4e13..021f6c5 100644
--- a/data/models.go
+++ b/data/models.go
@@ -17,26 +17,17 @@ type User struct {
   Password string `db:"password" validate:"required,min=8,max=64"`
 }
 
-type Message struct {
+/*
+ * Example of using the null library to do optional fields.
+ */
+type NullExample struct {
   Id int `db:"id" json:"id" validate:"numeric"`
-  Text string `db:"text" json:"text" validate:"required,max=512"`
-  UserId int `db:"user_id" json:"user_id" validate:"numeric"`
-  CreatedAt string `db:"created_at" json:"created_at"`
-  Likes int `db:"likes" json:"likes" validate:"numeric"`
-  Bookmarks int `db:"bookmarks" json:"bookmarks" validate:"numeric"`
-  ReplyingTo null.Int `db:"replying_to" json:"replying_to" validate:"omitempty,numeric"`
-}
-
-
-type Bookmark struct {
-  MessageId int `db:"message_id" json:"message_id" validate:"required,numeric"`
-  UserId int `db:"user_id" json:"user_id" validate:"required,numeric"`
+  HasMaybe null.Int `db:"replying_to" json:"replying_to" validate:"omitempty,numeric"`
 }
 
 func Models() map[string]reflect.Type {
   return map[string]reflect.Type{
     "user": reflect.TypeFor[User](),
-    "message": reflect.TypeFor[Message](),
-    "bookmark": reflect.TypeFor[Bookmark](),
+    "null_example": reflect.TypeFor[NullExample](),
   }
 }