Changes between Initial Version and Version 1 of Ticket #27764


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Timestamp:
Jan 23, 2017, 6:46:55 AM (7 years ago)
Author:
Alexandru Mărășteanu
Comment:

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  • Ticket #27764 – Description

    initial v1  
    5050}}}
    5151
    52 5. Run migrations backwards (i.e. `python migrate APP zero`)
     525. Run migrations backwards
    5353{{{
     54$ python manage.py migrate foo zero
     55Operations to perform:
     56  Unapply all migrations: foo
     57Running migrations:
     58  Rendering model states... DONE
     59  Unapplying foo.0002_auto_20170123_1212...Traceback (most recent call last):
     60  File "manage.py", line 10, in <module>
     61    execute_from_command_line(sys.argv)
     62  File "/Users/alexei/.virtualenvs/djbug/lib/python2.7/site-packages/django/core/management/__init__.py", line 367, in execute_from_command_line
     63    utility.execute()
     64  File "/Users/alexei/.virtualenvs/djbug/lib/python2.7/site-packages/django/core/management/__init__.py", line 359, in execute
     65    self.fetch_command(subcommand).run_from_argv(self.argv)
     66  File "/Users/alexei/.virtualenvs/djbug/lib/python2.7/site-packages/django/core/management/base.py", line 294, in run_from_argv
     67    self.execute(*args, **cmd_options)
     68  File "/Users/alexei/.virtualenvs/djbug/lib/python2.7/site-packages/django/core/management/base.py", line 345, in execute
     69    output = self.handle(*args, **options)
     70  File "/Users/alexei/.virtualenvs/djbug/lib/python2.7/site-packages/django/core/management/commands/migrate.py", line 204, in handle
     71    fake_initial=fake_initial,
     72  File "/Users/alexei/.virtualenvs/djbug/lib/python2.7/site-packages/django/db/migrations/executor.py", line 119, in migrate
     73    state = self._migrate_all_backwards(plan, full_plan, fake=fake)
     74  File "/Users/alexei/.virtualenvs/djbug/lib/python2.7/site-packages/django/db/migrations/executor.py", line 194, in _migrate_all_backwards
     75    self.unapply_migration(states[migration], migration, fake=fake)
     76  File "/Users/alexei/.virtualenvs/djbug/lib/python2.7/site-packages/django/db/migrations/executor.py", line 264, in unapply_migration
     77    state = migration.unapply(state, schema_editor)
     78  File "/Users/alexei/.virtualenvs/djbug/lib/python2.7/site-packages/django/db/migrations/migration.py", line 178, in unapply
     79    operation.database_backwards(self.app_label, schema_editor, from_state, to_state)
     80  File "/Users/alexei/.virtualenvs/djbug/lib/python2.7/site-packages/django/db/migrations/operations/fields.py", line 153, in database_backwards
     81    schema_editor.add_field(from_model, to_model._meta.get_field(self.name))
     82  File "/Users/alexei/.virtualenvs/djbug/lib/python2.7/site-packages/django/db/backends/postgresql/schema.py", line 21, in add_field
     83    super(DatabaseSchemaEditor, self).add_field(model, field)
     84  File "/Users/alexei/.virtualenvs/djbug/lib/python2.7/site-packages/django/db/backends/base/schema.py", line 409, in add_field
     85    self.execute(sql, params)
     86  File "/Users/alexei/.virtualenvs/djbug/lib/python2.7/site-packages/django/db/backends/base/schema.py", line 112, in execute
     87    cursor.execute(sql, params)
     88  File "/Users/alexei/.virtualenvs/djbug/lib/python2.7/site-packages/django/db/backends/utils.py", line 79, in execute
     89    return super(CursorDebugWrapper, self).execute(sql, params)
     90  File "/Users/alexei/.virtualenvs/djbug/lib/python2.7/site-packages/django/db/backends/utils.py", line 64, in execute
     91    return self.cursor.execute(sql, params)
     92  File "/Users/alexei/.virtualenvs/djbug/lib/python2.7/site-packages/django/db/utils.py", line 94, in __exit__
     93    six.reraise(dj_exc_type, dj_exc_value, traceback)
     94  File "/Users/alexei/.virtualenvs/djbug/lib/python2.7/site-packages/django/db/backends/utils.py", line 64, in execute
     95    return self.cursor.execute(sql, params)
    5496django.db.utils.ProgrammingError: column "foo_ptr_id" of relation "foo_bar" already exists
    5597}}}
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