Question

我正在尝试迁移我的一个模型以删除此更改，但我正在获取下面的追溯。

  File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 354, in execute_from_command_line
utility.execute()
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 346, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 394, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 445, in execute
    output = self.handle(*args, **options)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/commands/migrate.py", line 222, in handle
    executor.migrate(targets, plan, fake=fake, fake_initial=fake_initial)
  File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/executor.py", line 112, in migrate
    self.unapply_migration(states[migration], migration, fake=fake)
  File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/executor.py", line 168, in unapply_migration
    state = migration.unapply(state, schema_editor)
  File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/migration.py", line 162, in unapply
    operation.database_backwards(self.app_label, schema_editor, from_state, to_state)
  File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/operations/fields.py", line 206, in database_backwards
    self.database_forwards(app_label, schema_editor, from_state, to_state)
  File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/operations/fields.py", line 201, in database_forwards
    schema_editor.alter_field(from_model, from_field, to_field)
  File "/usr/local/lib/python2.7/dist-packages/django/db/backends/base/schema.py", line 473, in alter_field
    not new_field.rel.through._meta.auto_created):
AttributeError: 'unicode' object has no attribute '_meta'

这是迁移

class Migration(migrations.Migration):

    dependencies = [
        ('app', '0004_auto_20151130_2345'),
    ]

    operations = [
        migrations.RenameModel('OldModelName', 'NewModelName'),
        migrations.AlterField(
            model_name='adifferentmodel',
            name='them2mfieldname',
            field=models.ManyToManyField(to='app.TheSecondModel', through='app.NewModelName', blank=True),
        ),

    ]

Django迁移失败，通过现场更改迁移m2m

0 个答案: