default created_at for observation, relation

src/basic_memory/models.py

@@ -4,7 +4,6 @@ from typing import List, Optional
 from sqlalchemy import String, DateTime, ForeignKey, Text, TypeDecorator, Integer, text, UniqueConstraint
 from sqlalchemy.orm import Mapped, mapped_column, relationship, DeclarativeBase
 from sqlalchemy.ext.asyncio import AsyncAttrs
-from sqlalchemy import orm
 
 
 class UTCDateTime(TypeDecorator):
@@ -29,20 +28,10 @@ def utc_now() -> datetime:
     """Helper to get current UTC time"""
     return datetime.now(UTC)
 
-def lenient_constructor(self, **kwargs):
-    cls_ = type(self)
-    for k in kwargs:
-        if not hasattr(cls_, k):
-            print(f'Skipping invalid attr {k!r}')
-            continue
-        setattr(self, k, kwargs[k])
-
-registry = orm.registry(constructor=lenient_constructor)
-
 
 class Base(AsyncAttrs, DeclarativeBase):
     """Base class for all models"""
-    registry = registry
+    pass
 
 
 class Entity(Base):
@@ -127,7 +116,7 @@ class Observation(Base):
     )
     content: Mapped[str] = mapped_column(String)
     created_at: Mapped[datetime] = mapped_column(
-        UTCDateTime,
+        DateTime,
         server_default=text('CURRENT_TIMESTAMP')
     )
     context: Mapped[str | None] = mapped_column(String, nullable=True)