39 lines
1.1 KiB
Python
39 lines
1.1 KiB
Python
# Generated by Django 2.2.4 on 2019-09-23 15:05
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from django.core.validators import EMPTY_VALUES
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from django.db import migrations, models
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from collection.models import Collection
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def migrate_data_forward(apps, schema_editor):
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for instance in Collection.objects.all():
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if instance.slug in EMPTY_VALUES:
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instance.slug = None
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instance.save(update_fields=['slug'])
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def migrate_data_backward(apps, schema_editor):
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pass
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class Migration(migrations.Migration):
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dependencies = [
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('collection', '0012_collection_slug'),
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]
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operations = [
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migrations.AlterField(
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model_name='collection',
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name='slug',
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field=models.SlugField(null=True, verbose_name='Collection slug'),
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),
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migrations.RunPython(
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migrate_data_forward,
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migrate_data_backward,
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),
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migrations.AlterField(
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model_name='collection',
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name='slug',
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field=models.SlugField(null=True, unique=True, verbose_name='Collection slug'),
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),
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]
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