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from django.db import migrations, models
def raise_error(apps, schema_editor):
# Test operation in non-atomic migration is not wrapped in transaction
Publisher = apps.get_model('migrations', 'Publisher')
Publisher.objects.create(name='Test Publisher')
raise RuntimeError('Abort migration')
class Migration(migrations.Migration):
atomic = False
operations = [
migrations.CreateModel(
"Publisher",
[
("name", models.CharField(primary_key=True, max_length=255)),
],
),
migrations.RunPython(raise_error),
migrations.CreateModel(
"Book",
[
("title", models.CharField(primary_key=True, max_length=255)),
("publisher", models.ForeignKey("migrations.Publisher", models.SET_NULL, null=True)),
],
),
]
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