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43 lines
1.3 KiB
43 lines
1.3 KiB
# -*- coding: utf-8 -*-
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# Generated by Django 1.11 on 2018-08-08 17:31
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from __future__ import unicode_literals
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from json import load
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import os
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from django.core import serializers
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from django.db import migrations, models
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TMP_FILE = '/tmp/djing_ip_field_devapp_migrate.json'
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def device_backup_info(apps, _):
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Device = apps.get_model('devapp', 'Device')
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obs = Device.objects.exclude(ip_address=None).only('ip_address')
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with open(TMP_FILE, 'w') as f:
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serializers.serialize('json', obs, stream=f, fields=('ip_address',))
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def device_restore_info_to_new_scheme(apps, _):
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Device = apps.get_model('devapp', 'Device')
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with open(TMP_FILE, 'r') as f:
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for device in load(f):
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Device.objects.filter(pk=device['pk']).update(ip_address=device['fields']['ip_address'])
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if os.path.isfile(TMP_FILE):
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os.remove(TMP_FILE)
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class Migration(migrations.Migration):
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dependencies = [
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('devapp', '0004_device_extra_data'),
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]
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operations = [
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migrations.RunPython(device_backup_info),
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migrations.AlterField(
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model_name='device',
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name='ip_address',
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field=models.GenericIPAddressField(blank=True, null=True, verbose_name='Ip address'),
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),
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migrations.RunPython(device_restore_info_to_new_scheme)
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]
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