mirror of
https://github.com/netbox-community/netbox.git
synced 2024-05-10 07:54:54 +00:00
61 lines
2.3 KiB
Python
61 lines
2.3 KiB
Python
import sys
|
|
|
|
from django.db import migrations, models
|
|
import django.db.models.deletion
|
|
|
|
|
|
def cache_cable_devices(apps, schema_editor):
|
|
Cable = apps.get_model('dcim', 'Cable')
|
|
|
|
if 'test' not in sys.argv:
|
|
print("\nUpdating cable device terminations...")
|
|
cable_count = Cable.objects.count()
|
|
|
|
# Cache A/B termination devices on all existing Cables. Note that the custom save() method on Cable is not
|
|
# available during a migration, so we replicate its logic here.
|
|
for i, cable in enumerate(Cable.objects.all(), start=1):
|
|
|
|
if not i % 1000 and 'test' not in sys.argv:
|
|
print("[{}/{}]".format(i, cable_count))
|
|
|
|
termination_a_model = apps.get_model(cable.termination_a_type.app_label, cable.termination_a_type.model)
|
|
termination_a_device = None
|
|
if hasattr(termination_a_model, 'device'):
|
|
termination_a = termination_a_model.objects.get(pk=cable.termination_a_id)
|
|
termination_a_device = termination_a.device
|
|
|
|
termination_b_model = apps.get_model(cable.termination_b_type.app_label, cable.termination_b_type.model)
|
|
termination_b_device = None
|
|
if hasattr(termination_b_model, 'device'):
|
|
termination_b = termination_b_model.objects.get(pk=cable.termination_b_id)
|
|
termination_b_device = termination_b.device
|
|
|
|
Cable.objects.filter(pk=cable.pk).update(
|
|
_termination_a_device=termination_a_device,
|
|
_termination_b_device=termination_b_device
|
|
)
|
|
|
|
|
|
class Migration(migrations.Migration):
|
|
|
|
dependencies = [
|
|
('dcim', '0074_increase_field_length_platform_name_slug'),
|
|
]
|
|
|
|
operations = [
|
|
migrations.AddField(
|
|
model_name='cable',
|
|
name='_termination_a_device',
|
|
field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='+', to='dcim.Device'),
|
|
),
|
|
migrations.AddField(
|
|
model_name='cable',
|
|
name='_termination_b_device',
|
|
field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='+', to='dcim.Device'),
|
|
),
|
|
migrations.RunPython(
|
|
code=cache_cable_devices,
|
|
reverse_code=migrations.RunPython.noop
|
|
),
|
|
]
|