#28073: Django 1.11 Migration Issue
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Reporter: Logan Gunthorpe | Owner: nobody
Type: Uncategorized | Status: new
Component: Migrations | Version: 1.11
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 0
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
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Hi,
I'm trying to upgrade my project (originally created on 1.7) to the latest
release but there's an issue with my existing migration files not working.
The backtrace is below.
I'll attache my migration files but it seems to be related to the
migration removing the 'id' field which was automatically created and then
removed in a future migration. Commenting out the RemoveField in the
second migration seems to fix the issue but I'm not sure if it's entirely
correct to do so.
Thanks,
Logan
{{{
Traceback (most recent call last):
File "./manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "/home/logang/projects/stove/software/website_dev/env/lib/python3.4
/site-packages/django/core/management/__init__.py", line 363, in
execute_from_command_line
utility.execute()
File "/home/logang/projects/stove/software/website_dev/env/lib/python3.4
/site-packages/django/core/management/__init__.py", line 355, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/logang/projects/stove/software/website_dev/env/lib/python3.4
/site-packages/django/core/management/base.py", line 283, in run_from_argv
self.execute(*args, **cmd_options)
File "/home/logang/projects/stove/software/website_dev/env/lib/python3.4
/site-packages/django/core/management/base.py", line 330, in execute
output = self.handle(*args, **options)
File "/home/logang/projects/stove/software/website_dev/env/lib/python3.4
/site-packages/django/core/management/commands/migrate.py", line 163, in
handle
pre_migrate_state =
executor._create_project_state(with_applied_migrations=True)
File "/home/logang/projects/stove/software/website_dev/env/lib/python3.4
/site-packages/django/db/migrations/executor.py", line 81, in
_create_project_state
migration.mutate_state(state, preserve=False)
File "/home/logang/projects/stove/software/website_dev/env/lib/python3.4
/site-packages/django/db/migrations/migration.py", line 92, in
mutate_state
operation.state_forwards(self.app_label, new_state)
File "/home/logang/projects/stove/software/website_dev/env/lib/python3.4
/site-packages/django/db/migrations/operations/fields.py", line 148, in
state_forwards
delay = not old_field.is_relation
AttributeError: 'NoneType' object has no attribute 'is_relation'
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/28073>
Django <https://code.djangoproject.com/>
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