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54 lines
1.6 KiB
Python
54 lines
1.6 KiB
Python
from django.db import migrations
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from django.db.utils import DataError
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def check_legacy_data(apps, schema_editor):
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"""
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Abort the migration if any legacy site fields still contain data.
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"""
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Site = apps.get_model('dcim', 'Site')
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if site_count := Site.objects.exclude(asn__isnull=True).count():
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raise DataError(
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f"Unable to proceed with deleting asn field from Site model: Found {site_count} sites with "
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f"legacy ASN data. Please ensure all legacy site ASN data has been migrated to ASN objects "
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f"before proceeding."
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)
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if site_count := Site.objects.exclude(contact_name='', contact_phone='', contact_email='').count():
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raise DataError(
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f"Unable to proceed with deleting contact fields from Site model: Found {site_count} sites "
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f"with legacy contact data. Please ensure all legacy site contact data has been migrated to "
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f"contact objects before proceeding."
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)
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class Migration(migrations.Migration):
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dependencies = [
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('dcim', '0144_fix_cable_abs_length'),
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]
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operations = [
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migrations.RunPython(
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code=check_legacy_data,
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reverse_code=migrations.RunPython.noop
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),
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migrations.RemoveField(
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model_name='site',
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name='asn',
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),
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migrations.RemoveField(
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model_name='site',
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name='contact_email',
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),
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migrations.RemoveField(
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model_name='site',
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name='contact_name',
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),
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migrations.RemoveField(
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model_name='site',
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name='contact_phone',
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),
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]
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