maybe good

app/models/base.py

@@ -0,0 +1,17 @@
+"""
+Base model with common fields
+"""
+from sqlalchemy import Column, DateTime, String
+from sqlalchemy.sql import func
+from app.database.base import Base
+
+
+class TimestampMixin:
+    """Mixin for created_at and updated_at timestamps"""
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), onupdate=func.now())
+
+
+class BaseModel(Base, TimestampMixin):
+    """Base model class"""
+    __abstract__ = True