schedule.py 文件源码

def unfreeze(self, user=None):
        from pretalx.schedule.models import TalkSlot
        if not self.version:
            raise Exception('Cannot unfreeze schedule version: not released yet.')

        # collect all talks, which have been added since this schedule (#72)
        submission_ids = self.talks.all().values_list('submission_id', flat=True)
        talks = self.event.wip_schedule.talks \
            .exclude(submission_id__in=submission_ids) \
            .union(self.talks.all())

        wip_schedule = Schedule.objects.create(event=self.event)
        new_talks = []
        for talk in talks:
            new_talks.append(talk.copy_to_schedule(wip_schedule, save=False))
        TalkSlot.objects.bulk_create(new_talks)

        self.event.wip_schedule.talks.all().delete()
        self.event.wip_schedule.delete()

        with suppress(AttributeError):
            del wip_schedule.event.wip_schedule

        return self, wip_schedule