#24630: UUIDField migration
-------------------------------------+-------------------------------------
Reporter: lucacorti | Owner:
| priidukull
Type: Bug | Status: closed
Component: Migrations | Version: 1.8
Severity: Normal | Resolution: needsinfo
Keywords: uuidfiled | Triage Stage:
migrations | Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Comment (by ollanta):
Hi, I've stumbled across this issue as well.
I'm not getting the error with your example either priidukull, so I
reduced the code I had to a small example that still exhibits the bug (in
both django 1.7 and 1.8, but only in psql, not sqlite)
0001_initial.py :
{{{
# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from django.db import models, migrations
from django.conf import settings
class Migration(migrations.Migration):
dependencies = []
operations = [
migrations.CreateModel(
name='Parent',
fields=[
('id', models.AutoField(verbose_name='ID',
serialize=False, auto_created=True, primary_key=True)),
],
),
migrations.CreateModel(
name='Child',
fields=[
('id', models.AutoField(verbose_name='ID',
serialize=False, auto_created=True, primary_key=True)),
('boolfield', models.BooleanField(default=True)),
('parent', models.ForeignKey(to='example.Parent')),
],
),
]
}}}
0002_add_data.py:
{{{
# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from django.db import models, migrations
def add_data(apps, schema_editor):
Parent = apps.get_model("example", "Parent")
p = Parent(1)
p.save()
Child = apps.get_model("example", "Child")
c = Child(1, parent=p, boolfield=True)
c.save()
class Migration(migrations.Migration):
dependencies = [
('example', '0001_initial'),
]
operations = [
migrations.RunPython(
add_data
)
]
}}}
0003_change_field_type.py:
{{{
# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from django.db import models, migrations
def convert_field(apps, schema_editor):
Child = apps.get_model("example", "Child")
for c in Child.objects.all():
c.textchoicefield = 'true' if c.boolfield else 'false'
c.save()
class Migration(migrations.Migration):
dependencies = [
('example', '0002_add_data'),
]
operations = [
migrations.AddField(
model_name='child',
name='textchoicefield',
field=models.TextField(default=b'none', choices=[(b'true',
b'True'), (b'false', b'False'), (b'none', b'None')]),
preserve_default=True,
),
migrations.RunPython(convert_field),
migrations.RemoveField(
model_name='child',
name='boolfield',
),
]
}}}
If I move RemoveField out of the last migration and into its own, it all
works fine.
--
Ticket URL: <https://code.djangoproject.com/ticket/24630#comment:8>
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