gistfile1.txt

from opal.models import Episode
from opal.core.subrecords import episode_subrecords
from django.db import transaction

@transaction.atomic
def clone_episode(old):
    new = Episode(
        patient=old.patient,
        active=old.active,
        start=old.start,
        end=old.end,
        category_name=old.category_name,
        stage=old.stage
    )
    new.save()
    for sub in episode_subrecords():
        if sub._is_singleton:
            sub.objects.filter(episode=new).delete()
        for item in sub.objects.filter(episode=old):
            item.id = None
            item.episode = new
            item.save()
    old.delete()