Jul 13 - Optimize code

app/models/payments.py

@@ -5,6 +5,7 @@ and are reconciled via webhooks + nightly job.
 Money stored as integer cents throughout.
 """
 from datetime import datetime
+from app.utils.time import utcnow
 from sqlalchemy import JSON
 from app.extensions import db
 
@@ -27,9 +28,9 @@ class Subscription(db.Model):
         nullable=False, default="active")
     current_period_end = db.Column(db.DateTime, nullable=True)
     cancel_at_period_end = db.Column(db.Boolean, nullable=False, default=False)
-    created_at = db.Column(db.DateTime, default=datetime.utcnow, nullable=False)
-    updated_at = db.Column(db.DateTime, default=datetime.utcnow,
-                           onupdate=datetime.utcnow, nullable=False)
+    created_at = db.Column(db.DateTime, default=utcnow, nullable=False)
+    updated_at = db.Column(db.DateTime, default=utcnow,
+                           onupdate=utcnow, nullable=False)
 
     user = db.relationship("User",
                            backref=db.backref("subscription", uselist=False))
@@ -59,7 +60,7 @@ class Transaction(db.Model):
     stripe_object_id = db.Column(db.String(64), nullable=True, index=True)
     status = db.Column(db.String(20), nullable=False, default="succeeded")
     meta = db.Column(JSON, nullable=True)
-    created_at = db.Column(db.DateTime, default=datetime.utcnow, nullable=False)
+    created_at = db.Column(db.DateTime, default=utcnow, nullable=False)
 
     user = db.relationship("User",
                            backref=db.backref("transactions", lazy="dynamic"))
@@ -92,7 +93,7 @@ class Boost(db.Model):
     transaction_id = db.Column(
         db.BigInteger().with_variant(db.Integer, "sqlite"),
         db.ForeignKey("transactions.id"), nullable=True)
-    created_at = db.Column(db.DateTime, default=datetime.utcnow, nullable=False)
+    created_at = db.Column(db.DateTime, default=utcnow, nullable=False)
 
     listing = db.relationship("Listing",
                               backref=db.backref("boosts", lazy="selectin"))
@@ -102,7 +103,7 @@ class Boost(db.Model):
 
     @property
     def is_active(self):
-        return self.expires_at > datetime.utcnow()
+        return self.expires_at > utcnow()
 
     def __repr__(self):
         return f"<Boost {self.type} L{self.listing_id} exp={self.expires_at.date()}>"