#24563: Migration for M2M Field fails with FieldDoesNotExist when removing
null=True from model
-------------------------------------+-------------------------------------
Reporter: GitRon | Owner: nobody
Type: Bug | Status: closed
Component: Migrations | Version: 1.8
Severity: Normal | Resolution: needsinfo
Keywords: migrations, | Triage Stage:
many2many, nullable | Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Changes (by timgraham):
* status: new => closed
* resolution: => needsinfo
Old description:
> I removed the null=True as suggested in django 1.8 warnings from my M2M
> field in the model.
>
> django migrations created the following:
>
> class Migration(migrations.Migration):
>
> [...]
> operations = [
> migrations.AlterField(model_name='project', name='my_field',
> field=models.ManyToManyField(related_name='in_charge_projects',
> verbose_name='label', to='account.Employee', blank=True),
> ),
> [...]
> ]
>
> I get the following error:
>
> "django.core.exceptions.FieldDoesNotExist: Project_my_field has no field
> named None"
New description:
I removed the null=True as suggested in django 1.8 warnings from my M2M
field in the model.
django migrations created the following:
{{{
class Migration(migrations.Migration):
[...]
operations = [
migrations.AlterField(model_name='project', name='my_field',
field=models.ManyToManyField(related_name='in_charge_projects',
verbose_name='label', to='account.Employee', blank=True),
),
[...]
]
}}}
I get the following error:
"django.core.exceptions.FieldDoesNotExist: Project_my_field has no field
named None"
--
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Ticket URL: <https://code.djangoproject.com/ticket/24563#comment:2>
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