added branch

backend/src/structs/landmark.py

@@ -1,6 +1,6 @@
 """Definition of the Landmark class to handle visitable objects across the world."""
 
-from typing import Optional, Literal
+from typing import Optional, Literal, List
 from uuid import uuid4, UUID
 from pydantic import BaseModel, ConfigDict, Field
 
@@ -50,7 +50,7 @@ class Landmark(BaseModel) :
     image_url : Optional[str] = None
     website_url : Optional[str] = None
     wiki_url : Optional[str] = None
-    description : Optional[str] = None                          # TODO future
+    description : Optional[str] = None
     duration : Optional[int] = 5
     name_en : Optional[str] = None
 
@@ -69,6 +69,12 @@ class Landmark(BaseModel) :
     is_viewpoint : Optional[bool] = False
     is_place_of_worship : Optional[bool] = False
 
+
+    class Config:
+        json_encoders = {
+            UUID: lambda v: str(v)  # Ensure UUID is serialized as a string
+        }
+
     def __str__(self) -> str:
         """
         String representation of the Landmark object.