When you make any changes to the field, AlterField will be added rather
than AddField.
On Thu, May 28, 2020 at 7:32 AM Erin Masatsugu <erin.masats...@gmail.com>
wrote:
> 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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Thanks & Regards,
*Durai pandianMobile : +91-9611051220Email : ddpa...@gmail.com
<ddpa...@gmail.com> *
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