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netbox-community-netbox/netbox/dcim/migrations/0145_site_remove_deprecated_fields.py
2022-04-05 14:24:28 -04:00

60 lines
2.1 KiB
Python

import os
from django.db import migrations
from django.db.utils import DataError
def check_legacy_data(apps, schema_editor):
"""
Abort the migration if any legacy site fields still contain data.
"""
Site = apps.get_model('dcim', 'Site')
site_count = Site.objects.exclude(asn__isnull=True).count()
if site_count and 'NETBOX_DELETE_LEGACY_DATA' not in os.environ:
raise DataError(
f"Unable to proceed with deleting asn field from Site model: Found {site_count} sites with "
f"legacy ASN data. Please ensure all legacy site ASN data has been migrated to ASN objects "
f"before proceeding. Or, set the NETBOX_DELETE_LEGACY_DATA environment variable to bypass "
f"this safeguard and delete all legacy site ASN data."
)
site_count = Site.objects.exclude(contact_name='', contact_phone='', contact_email='').count()
if site_count and 'NETBOX_DELETE_LEGACY_DATA' not in os.environ:
raise DataError(
f"Unable to proceed with deleting contact fields from Site model: Found {site_count} sites "
f"with legacy contact data. Please ensure all legacy site contact data has been migrated to "
f"contact objects before proceeding. Or, set the NETBOX_DELETE_LEGACY_DATA environment "
f"variable to bypass this safeguard and delete all legacy site contact data."
)
class Migration(migrations.Migration):
dependencies = [
('dcim', '0144_fix_cable_abs_length'),
]
operations = [
migrations.RunPython(
code=check_legacy_data,
reverse_code=migrations.RunPython.noop
),
migrations.RemoveField(
model_name='site',
name='asn',
),
migrations.RemoveField(
model_name='site',
name='contact_email',
),
migrations.RemoveField(
model_name='site',
name='contact_name',
),
migrations.RemoveField(
model_name='site',
name='contact_phone',
),
]