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33 lines
963 B
Python
33 lines
963 B
Python
from django.db import migrations
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from django.db.models import Q
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def delete_obsolete_cablepaths(apps, schema_editor):
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"""
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Delete all CablePath instances which originate or terminate at a CircuitTermination.
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"""
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ContentType = apps.get_model('contenttypes', 'ContentType')
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CircuitTermination = apps.get_model('circuits', 'CircuitTermination')
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CablePath = apps.get_model('dcim', 'CablePath')
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ct = ContentType.objects.get_for_model(CircuitTermination)
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CablePath.objects.filter(Q(origin_type=ct) | Q(destination_type=ct)).delete()
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class Migration(migrations.Migration):
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dependencies = [
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('circuits', '0028_cache_circuit_terminations'),
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]
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operations = [
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migrations.RemoveField(
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model_name='circuittermination',
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name='_path',
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),
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migrations.RunPython(
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code=delete_obsolete_cablepaths,
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reverse_code=migrations.RunPython.noop
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),
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]
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