Hi,
Is that complete model definition?
Since exception seems to go through modifying composed index
(unique_together) where you might still have reference to deleted field.
On Thu, Apr 19, 2018 at 3:36 PM, James Farris <jamesafar...@gmail.com>
wrote:
> My guess is that field is not empty in the database or it’s being called
> in a view or template still.
>
> Sent from my mobile device
>
> On Apr 18, 2018, at 2:59 PM, jackotonye <tonye...@gmail.com> wrote:
>
> A migration generated with `python manage.py makemigrations` Fails to
> execute using `python manage.py migrate`.
>
>
> Model Layout:
>
> class Offer(BaseModel):
> client = models.ForeignKey(Client, on_delete=models.PROTECT,
> related_name='offers')
> amount_off = models.DecimalField(max_digits=5, decimal_places=2,
> default=Decimal('0.00')). # Removed this field from the model
>
>
>
> Generated Migration file:
>
> # Generated by Django 2.0.2 on 2018-04-18 21:36
>
> from django.db import migrations
>
>
> class Migration(migrations.Migration):
>
> dependencies = [
> ('my_app', '0031_auto_20180418_1802'),
> ]
>
> operations = [
> migrations.RemoveField(
> model_name='offer',
> name='amount_off',
> ),
> ]
>
>
>
>
>
> Error:
> Running migrations:
>
> Applying my_app.0032_auto_20180418_2136...Traceback (most recent call
> last):
>
> File "/Users/myuser/.virtualenvs/my_app/lib/python3.6/site-
> packages/django/db/models/options.py", line 566, in get_field
>
> return self.fields_map[field_name]
>
> KeyError: 'amount_off'
>
>
> During handling of the above exception, another exception occurred:
>
>
> Traceback (most recent call last):
>
> File "manage.py", line 22, in <module>
>
> execute_from_command_line(sys.argv)
>
> File "/Users/myuser/.virtualenvs/my_app/lib/python3.6/site-
> packages/django/core/management/__init__.py", line 371, in
> execute_from_command_line
>
> utility.execute()
>
> File "/Users/myuser/.virtualenvs/my_app/lib/python3.6/site-
> packages/django/core/management/__init__.py", line 365, in execute
>
> self.fetch_command(subcommand).run_from_argv(self.argv)
>
> File "/Users/myuser/.virtualenvs/my_app/lib/python3.6/site-
> packages/django/core/management/base.py", line 288, in run_from_argv
>
> self.execute(*args, **cmd_options)
>
> File "/Users/myuser/.virtualenvs/my_app/lib/python3.6/site-
> packages/django/core/management/base.py", line 335, in execute
>
> output = self.handle(*args, **options)
>
> File "/Users/myuser/.virtualenvs/my_app/lib/python3.6/site-
> packages/django/core/management/commands/migrate.py", line 200, in handle
>
> fake_initial=fake_initial,
>
> File "/Users/myuser/.virtualenvs/my_app/lib/python3.6/site-
> packages/django/db/migrations/executor.py", line 117, in migrate
>
> state = self._migrate_all_forwards(state, plan, full_plan, fake=fake,
> fake_initial=fake_initial)
>
> File "/Users/myuser/.virtualenvs/my_app/lib/python3.6/site-
> packages/django/db/migrations/executor.py", line 147, in
> _migrate_all_forwards
>
> state = self.apply_migration(state, migration, fake=fake, fake_initial
> =fake_initial)
>
> File "/Users/myuser/.virtualenvs/my_app/lib/python3.6/site-
> packages/django/db/migrations/executor.py", line 244, in apply_migration
>
> state = migration.apply(state, schema_editor)
>
> File "/Users/myuser/.virtualenvs/my_app/lib/python3.6/site-
> packages/django/db/migrations/migration.py", line 122, in apply
>
> operation.database_forwards(self.app_label, schema_editor, old_state,
> project_state)
>
> File "/Users/myuser/.virtualenvs/my_app/lib/python3.6/site-
> packages/django/db/migrations/operations/models.py", line 525, in
> database_forwards
>
> getattr(new_model._meta, self.option_name, set()),
>
> File "/Users/myuser/.virtualenvs/my_app/lib/python3.6/site-
> packages/django/db/backends/base/schema.py", line 342, in
> alter_unique_together
>
> self._delete_composed_index(model, fields, {'unique': True}, self.
> sql_delete_unique)
>
> File "/Users/myuser/.virtualenvs/my_app/lib/python3.6/site-
> packages/django/db/backends/base/schema.py", line 365, in
> _delete_composed_index
>
> columns = [model._meta.get_field(field).column for field in fields]
>
> File "/Users/myuser/.virtualenvs/my_app/lib/python3.6/site-
> packages/django/db/backends/base/schema.py", line 365, in <listcomp>
>
> columns = [model._meta.get_field(field).column for field in fields]
>
> File "/Users/myuser/.virtualenvs/my_app/lib/python3.6/site-
> packages/django/db/models/options.py", line 568, in get_field
>
> raise FieldDoesNotExist("%s has no field named '%s'" % (self.
> object_name, field_name))
>
> django.core.exceptions.FieldDoesNotExist: Offer has no field named
> 'amount_off'
>
>
>
>
>
>
>
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--
Jani Tiainen
- Well planned is half done, and a half done has been sufficient before...
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