fixed typo

simulator/models/flight.py

@@ -28,6 +28,7 @@ class Flight(models.Model):
         validators=[MinValueValidator(1), MaxValueValidator(9999)]
     )
     departure_time = models.DateTimeField()
+    canceled = models.BooleanField(default=False)
 
     class Meta:
         constraints = [
@@ -59,11 +60,9 @@ class Flight(models.Model):
         return self.departure_time + self.duration
 
     def clean(self):
-        # Validate origin and destination are different
         if self.origin == self.destination:
             raise ValidationError("Origin and destination airports cannot be the same.")
 
-        # Validate carrier owns the equipment
         if self.equipment.owner != self.carrier:
             raise ValidationError(
                 f"{self.equipment} is owned by {self.equipment.owner}, "
@@ -76,14 +75,18 @@ class Flight(models.Model):
                 f"maximum range ({self.equipment.model.range_nm} nm)."
             )
 
-        previous_flight = (
-            Flight.objects.filter(
-                equipment=self.equipment, departure_time__lt=self.departure_time
-            )
-            .order_by("-departure_time")
-            .exclude(pk=self.pk)
-            .first()
-        )
+        previous_flights = Flight.objects.filter(
+            equipment=self.equipment,
+            departure_time__lt=self.departure_time,
+            canceled=False,
+        ).exclude(pk=self.pk)
+
+        previous_flight = None
+        latest_arrival = None
+        for flight in previous_flights:
+            if latest_arrival is None or flight.arrival_time > latest_arrival:
+                latest_arrival = flight.arrival_time
+                previous_flight = flight
 
         if previous_flight:
             if previous_flight.destination != self.origin:
@@ -112,6 +115,8 @@ class Flight(models.Model):
 
     @property
     def status(self):
+        if self.canceled:
+            return "Canceled"
         now = timezone.now()
         if now < self.departure_time:
             return "Scheduled"