#32350: Showmigrations applied timestamp can cause runtime error
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Reporter: Daniel | Owner: nobody
Ebrahimian |
Type: Bug | Status: new
Component: Core | Version: 3.1
(Management commands) | Keywords: management command
Severity: Normal | showmigrations applied timestamp
Triage Stage: | Has patch: 1
Unreviewed |
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
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The functionality of `showmigrations --verbosity 2` will show the
`applied` timestamps for migrations.
In certain scenarios, a timestamp isn't available and will cause a run
time error of
`AttributeError: 'Migration' object has no attribute 'applied'`.
An example of this is having `social_django` migrations in a project.
Proposed solution: Safely check for the `applied` timestamp to exist
before logging it.
Current workaround: Don't use `--verbosity 2`
Logs
This shows the type for the `applied_migration`
{{{
<class
'django.db.migrations.recorder.MigrationRecorder.Migration.<locals>.Migration'>
[X] 0045_auto_20201125_0810 (applied at 2021-01-13 23:39:40)
<class
'django.db.migrations.recorder.MigrationRecorder.Migration.<locals>.Migration'>
[X] 0046_auto_20201218_0440 (applied at 2021-01-13 23:39:42)
sessions
<class
'django.db.migrations.recorder.MigrationRecorder.Migration.<locals>.Migration'>
[X] 0001_initial (applied at 2021-01-13 23:40:46)
social_django
<class 'social_django.migrations.0001_initial.Migration'>
Traceback (most recent call last):
File "real_manage.py", line 23, in <module>
execute_from_command_line(sys.argv)
File "/usr/local/lib/python3.8/site-
packages/django/core/management/__init__.py", line 401, in
execute_from_command_line
utility.execute()
File "/usr/local/lib/python3.8/site-
packages/django/core/management/__init__.py", line 395, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/usr/local/lib/python3.8/site-
packages/django/core/management/base.py", line 328, in run_from_argv
self.execute(*args, **cmd_options)
File "/usr/local/lib/python3.8/site-
packages/django/core/management/base.py", line 369, in execute
output = self.handle(*args, **options)
File "/usr/local/lib/python3.8/site-
packages/django/core/management/commands/showmigrations.py", line 52, in
handle
return self.show_list(connection, options['app_label'])
File "/usr/local/lib/python3.8/site-
packages/django/core/management/commands/showmigrations.py", line 97, in
show_list
output += ' (applied at %s)' %
applied_migration.applied.strftime('%Y-%m-%d %H:%M:%S')
AttributeError: 'Migration' object has no attribute 'applied'
}}}
This is after the proposed pull request
{{{
[X] 0045_auto_20201125_0810 (applied at 2021-01-13 23:39:40)
<class
'django.db.migrations.recorder.MigrationRecorder.Migration.<locals>.Migration'>
[X] 0046_auto_20201218_0440 (applied at 2021-01-13 23:39:42)
sessions
<class
'django.db.migrations.recorder.MigrationRecorder.Migration.<locals>.Migration'>
[X] 0001_initial (applied at 2021-01-13 23:40:46)
social_django
<class 'social_django.migrations.0001_initial.Migration'>
[X] 0001_initial (2 squashed migrations)
<class 'social_django.migrations.0002_add_related_name.Migration'>
[X] 0002_add_related_name (2 squashed migrations)
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/32350>
Django <https://code.djangoproject.com/>
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