id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
27914	makemigrations produces incorrect path for inner classes	Serge van den Boom	Hasan Ramezani	"When you define a subclass from {{{django.db.models.Field}}} as an inner class of some other class, and use this field inside a {{{django.db.models.Model}}} class, then when you run {{{manage.py makemigrations}}}, a migrations file is created which refers to the inner class as if it were a top-level class of the module it is in.

To reproduce, create the following as your model:
{{{#!python
class Outer(object):
    class Inner(models.CharField):
        pass

class A(models.Model):
    field = Outer.Inner(max_length=20)
}}}
After running {{{manage.py makemigrations}}}, the generated migrations file contains the following:
{{{#!python
migrations.CreateModel(
    name='A',
    fields=[
        ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
        ('field', test1.models.Inner(max_length=20)),
    ],
),
}}}
Note the {{{test1.models.Inner}}}, which should have been {{{test1.models.Outer.Inner}}}.

The real life case involved an EnumField from django-enumfields, defined as an inner class of a Django Model class, similar to this:
{{{#!python
import enum
from enumfields import Enum, EnumField

class Thing(models.Model):
    @enum.unique
    class State(Enum):
        on = 'on'
        off = 'off'

    state = EnumField(enum=State)
}}}
This results in the following migrations code:
{{{#!python
migrations.CreateModel(
    name='Thing',
    fields=[
        ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
        ('state', enumfields.fields.EnumField(enum=test1.models.State, max_length=10)),
    ],
),
}}}
This refers to {{{test1.models.State}}}, instead of to {{{test1.models.Thing.State}}}.
"	New feature	closed	Migrations	dev	Normal	fixed		anand21nanda@… Hasan Ramezani	Accepted	1	0	0	0	0	0