konova/codelist/migrations/0002_migrate_975_to_288.py
mpeltriaux 2492a8abe8 # Codelist migration optimization
* adds boolean to de-/activate migration logic inside of 0002_migrate_975_to_288.py
2024-08-19 10:23:05 +02:00

61 lines
2.1 KiB
Python

# Generated by Django 5.0.7 on 2024-08-06 13:40
from django.core.exceptions import ObjectDoesNotExist
from django.db import migrations
from django.db.models import Q
from codelist.settings import CODELIST_BIOTOPES_EXTRA_CODES_FULL_ID, CODELIST_BIOTOPES_EXTRA_CODES_ID
def migrate_975_to_288(apps, schema_editor):
KonovaCodeList = apps.get_model('codelist', 'KonovaCodeList')
CompensationState = apps.get_model('compensation', 'CompensationState')
try:
list_288 = KonovaCodeList.objects.get(
id=CODELIST_BIOTOPES_EXTRA_CODES_FULL_ID
).codes.all()
except ObjectDoesNotExist:
raise AssertionError("KonovaCodeList 288 does not exist. Did you run 'update_codelist' before migrating?")
states_with_extra_code = CompensationState.objects.filter(
~Q(biotope_type_details=None)
)
print(f"... Found {states_with_extra_code.count()} biotope state entries")
for state in states_with_extra_code:
extra_codes_975 = state.biotope_type_details.filter(
code_lists__in=[CODELIST_BIOTOPES_EXTRA_CODES_ID]
)
count_extra_codes_975 = extra_codes_975.count()
if count_extra_codes_975 > 0:
print(f" --> Found {count_extra_codes_975} codes from list 975 in biotope entry {state.id}")
extra_codes_288 = []
for extra_code_975 in extra_codes_975:
atom_id = extra_code_975.atom_id
codes_from_288 = list_288.filter(
atom_id=atom_id,
)
extra_codes_288 += codes_from_288
state.biotope_type_details.set(extra_codes_288)
print(" --> Migrated to list 288 for all biotope entries")
class Migration(migrations.Migration):
dependencies = [
('codelist', '0001_initial'),
('compensation', '0003_auto_20220202_0846'),
]
# If migration of codelist is not necessary, this variable can shut down the logic whilst not disturbing the
# migration history
EXECUTE_CODELIST_MIGRATION = True
operations = []
if EXECUTE_CODELIST_MIGRATION:
operations.append(migrations.RunPython(migrate_975_to_288))