Update routes/recommend.py

routes/recommend.py

@@ -257,7 +257,7 @@ def recommend_book():
             recommender_url = RECOMMENDER_ENDPOINTS[rec_type]
             response = requests.post(
                 recommender_url,
-                json={"genre": genre},
+                json={"genre": genre},  # Single string as expected
                 timeout=10
             )
 
@@ -291,7 +291,7 @@ def recommend_book():
                 history = History(
                     user_id=user_id,
                     recommendation_type=rec_type,
-                    genre=genres_list,
+                    genre=[genre],  # ✅ Fixed: wrap single genre in list for History model
                     items=normalized,
                     query_params={"top_k": top_k}
                 )
@@ -306,7 +306,7 @@ def recommend_book():
                 "recommendations": normalized,
                 "count": len(normalized),
                 "type": rec_type,
-                "genres": genre
+                "genres": [genre]  # ✅ Fixed: wrap single genre in list for consistency
             }), 200
 
         except requests.exceptions.Timeout: