Update config_models.py

config_models.py

@@ -8,18 +8,11 @@ from typing import Optional, List, Dict, Any
 class BaseModelWithDatetime(BaseModel):
     """Base model with consistent datetime serialization"""
     
-    @field_serializer('created_date', 'last_update_date', 'publish_date', 'timestamp')
-    def serialize_datetime(self, dt: Optional[datetime], _info) -> Optional[str]:
-        """Serialize datetime fields to consistent ISO format"""
-        if dt is None:
-            return None
-        if isinstance(dt, str):
-            # String ise normalize et
-            return dt.replace(' ', 'T')
-        if isinstance(dt, datetime):
-            # Datetime objesi ise ISO formatına çevir
-            return dt.isoformat()
-        return str(dt)
+    class Config:
+        # Datetime'ları her zaman ISO 8601 formatında serialize et
+        json_encoders = {
+            datetime: lambda v: v.isoformat() if v else None
+        }
         
 # ===================== User & Auth =====================
 class UserConfig(BaseModelWithDatetime):