Re: Django generated migration fails with KeyError for field that was removed from the model.

2018-04-19 Thread Jani Tiainen 
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 
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  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 
>
> 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 
>
> 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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Re: Django generated migration fails with KeyError for field that was removed from the model.

2018-04-19 Thread James Farris 
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  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 
> 
> 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 
> 
> 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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Django generated migration fails with KeyError for field that was removed from the model.

2018-04-18 Thread jackotonye 
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 

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 

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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