moviewyrm/bookwyrm/migrations/0005_auto_20200221_1645.py

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# Generated by Django 3.0.3 on 2020-02-21 16:45
import re
from django.db import migrations, models
def populate_identifiers(app_registry, schema_editor):
db_alias = schema_editor.connection.alias
tags = app_registry.get_model('bookwyrm', 'Tag')
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for tag in tags.objects.using(db_alias):
tag.identifier = re.sub(r'\W+', '-', tag.name).lower()
tag.save()
class Migration(migrations.Migration):
dependencies = [
('bookwyrm', '0004_tag'),
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]
operations = [
migrations.AddField(
model_name='tag',
name='identifier',
field=models.CharField(max_length=100, null=True),
),
migrations.AlterField(
model_name='tag',
name='name',
field=models.CharField(max_length=100),
),
migrations.RunPython(populate_identifiers),
]