46 lines
1.3 KiB
Python
46 lines
1.3 KiB
Python
from django.db import migrations, models
|
|
import django.db.models.deletion
|
|
|
|
|
|
def backfill_flock_kandang_from_cycle(apps, schema_editor):
|
|
Flock = apps.get_model("farms", "Flock")
|
|
for flock in Flock.objects.select_related("cycle").iterator():
|
|
if flock.cycle_id and flock.kandang_id is None:
|
|
flock.kandang_id = flock.cycle.kandang_id
|
|
flock.save(update_fields=["kandang_id"])
|
|
|
|
|
|
class Migration(migrations.Migration):
|
|
atomic = False
|
|
|
|
dependencies = [
|
|
("farms", "0010_restore_flock_cycle_erd"),
|
|
]
|
|
|
|
operations = [
|
|
migrations.AddField(
|
|
model_name="flock",
|
|
name="kandang",
|
|
field=models.ForeignKey(
|
|
null=True,
|
|
on_delete=django.db.models.deletion.CASCADE,
|
|
related_name="flocks",
|
|
to="farms.kandang",
|
|
),
|
|
),
|
|
migrations.RunPython(backfill_flock_kandang_from_cycle, migrations.RunPython.noop),
|
|
migrations.AlterField(
|
|
model_name="flock",
|
|
name="kandang",
|
|
field=models.ForeignKey(
|
|
on_delete=django.db.models.deletion.CASCADE,
|
|
related_name="flocks",
|
|
to="farms.kandang",
|
|
),
|
|
),
|
|
migrations.RemoveField(
|
|
model_name="flock",
|
|
name="cycle",
|
|
),
|
|
]
|