Standardised Bases across models

app/models/access_request.py

@@ -1,9 +1,9 @@
-from datetime import datetime, timezone #noqa
+from datetime import datetime
 
 from sqlalchemy import DateTime, ForeignKey, String
 from sqlalchemy.orm import Mapped, mapped_column
 
-from app.models.user import Base
+from app.db.base_class import Base
 
 
 class AccessRequest(Base):