fix: don’t use bulk_create and don’t ignore conflicts

program/management/commands/addtimeslots.py

@@ -3,6 +3,7 @@ from datetime import datetime
 from dateutil.rrule import rrule
 
 from django.core.management import BaseCommand
+from django.db import IntegrityError
 from django.utils.timezone import make_aware
 from program.models import RRule, Schedule, TimeSlot
 
@@ -34,6 +35,8 @@ class Command(BaseCommand):
         for schedule in (
             Schedule.objects.exclude(rrule=once).filter(last_date=None).order_by("show__name")
         ):
+            added = 0
+            skipped = 0
             last_timeslot = schedule.timeslots.last()
 
             # add timeslots to the schedules with no timeslot this year
@@ -65,8 +68,16 @@ class Command(BaseCommand):
                         )
                     )
                 else:
-                    TimeSlot.objects.bulk_create(timeslots, ignore_conflicts=True)
+                    for timeslot in timeslots:
+                        try:
+                            timeslot.save()
+                        except IntegrityError:
+                            skipped += 1
+                        else:
+                            added += 1
 
                     self.stdout.write(
-                        self.style.SUCCESS(f"added {str(len(timeslots))} timeslots to {schedule}")
+                        self.style.SUCCESS(
+                            f"added {str(added)} timeslots to {schedule}, skipped {str(skipped)}"
+                        )
                     )