[add]: timestamp fix

app/models/offer.py

@@ -2,6 +2,7 @@ from datetime import datetime, timezone
 from app.extensions import db
 from app.models.charge import Charge
 from sqlalchemy.orm import relationship
+from sqlalchemy.sql import func
 
 class Offer(db.Model):
     __tablename__ = 'offers'
@@ -17,9 +18,8 @@ class Offer(db.Model):
     insurance_rate = db.Column(db.Float, default=1.0)
     vat_rate = db.Column(db.Float, default=7.5)
     list_order = db.Column(db.Integer, nullable=True)
-    created_at = db.Column(db.DateTime, default=datetime.now(timezone.utc))
-    updated_at = db.Column(db.DateTime, default=datetime.now(timezone.utc), onupdate=datetime.now(timezone.utc))
-
+    created_at = db.Column(db.DateTime(timezone=True), server_default=func.now())
+    updated_at = db.Column(db.DateTime(timezone=True), onupdate=func.now())
     charges = relationship(
         "Charge",
         primaryjoin="Offer.id == Charge.offer_id",