#28677: on_delete is a required positional argument for ForeignKeys, even in
migrations
-------------------------------------+-------------------------------------
Reporter: Christian | Owner: nobody
Kreuzberger |
Type: Bug | Status: new
Component: | Version: 2.0
Migrations | Keywords: migration
Severity: Normal | foreignkey on_delete
Triage Stage: | Has patch: 0
Unreviewed |
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
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Hi!
With version 2.0 you added `on_delete` as a required argument for
ForeignKeys. This seems to also be true for existing migrations of pre-2.0
projects.
For instance, I attached a migration that I created last year with (i
think) Django 1.8. This migration now fails with the following error
(e.g., when running `python manage.py check`):
{{{
File
"/home/user/projects/user_foreign_key_testapp/polls/migrations/0005_auto_20160414_1351.py",
line 7, in <module>
class Migration(migrations.Migration):
File
"/home/user/projects/user_foreign_key_testapp/polls/migrations/0005_auto_20160414_1351.py",
line 17, in Migration
field=models.ForeignKey(related_name='choices', verbose_name=b'Which
poll?', to='polls.Poll'),
TypeError: __init__() missing 1 required positional argument: 'on_delete'
}}}
I believe that I should not have to change all my existing migrations for
all my projects, and therefore on_delete should not be required for those
migrations.
--
Ticket URL: <https://code.djangoproject.com/ticket/28677>
Django <https://code.djangoproject.com/>
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