If I have this a model in app A:
class AppAModel(models.Model):
name = models.CharField(max_length=50, default="")
and this model in app B:
class AppBModel(models.Model):
name = models.CharField(max_length=50, default="")
and a I add a foreign key to AppAModel in app C:
class AppCModel(models.Model):
my_field = models.ForeignKey(AppAModel, on_delete=models.CASCADE)
the generated migration file correctly adds a dependency from app C to app
A:
class Migration(migrations.Migration):
dependencies = [
('app_a', 'XXXX_app_a_migration'),
('app_c', 'XXXX_app_c_migration'),
]
operations = [
migrations.CreateModel(
name='AppCModel',
fields=[
('id', models.AutoField(auto_created=True,
primary_key=True, serialize=False, verbose_name='ID')),
('my_field',
models.ForeignKey(on_delete=django.db.models.deletion.CASCADE,
to='ncm.AppAModel')),
],
),
]
However, if I then update my_field to instead have a foreign key to
AppBModel, django doesn't add a migration dependency from app C to app B:
class Migration(migrations.Migration):
dependencies = [
('app_c', 'XXXX_app_c_migration'),
]
operations = [
migrations.AlterField(
model_name='appcmodel',
name='my_field',
field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE,
to='metals.AppBModel'),
),
]
I saw the response here
https://groups.google.com/forum/#!searchin/django-users/migration$20dependency%7Csort:date/django-users/-h9LZxFomLU/ry_yeWGfDQAJ
so I don't believe this is expected behavior, but can someone confirm?
Thank you!
Erin
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