#26149: Invalid migration generated when using order_with_respect_to and a
unique_together constraint
-----------------------------+------------------------------------
Reporter: Richard Xia | Owner: (none)
Type: Bug | Status: new
Component: Migrations | Version: 1.9
Severity: Normal | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 1 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 1
Easy pickings: 0 | UI/UX: 0
-----------------------------+------------------------------------
Comment (by amir jamshidi):
I guess this bug don't exist no more. As I checked your sample code and
migration done without Exception.
your code sample: just `on_delete` added to dependancy.
{{{
class Bar(models.Model):
pass
class Foo(models.Model):
class Meta:
order_with_respect_to = 'bar'
unique_together = ('bar', '_order')
bar = models.ForeignKey(Bar, on_delete=models.CASCADE)
}}}
below is the migration generated:
{{{
class Migration(migrations.Migration):
initial = True
dependencies = []
operations = [
migrations.CreateModel(
name="Bar",
fields=[
(
"id",
models.BigAutoField(
auto_created=True,
primary_key=True,
serialize=False,
verbose_name="ID",
),
),
],
),
migrations.CreateModel(
name="Foo",
fields=[
(
"id",
models.BigAutoField(
auto_created=True,
primary_key=True,
serialize=False,
verbose_name="ID",
),
),
(
"bar",
models.ForeignKey(
on_delete=django.db.models.deletion.CASCADE,
to="myapp.bar"
),
),
],
options={
"order_with_respect_to": "bar",
"unique_together": {("bar", "_order")},
},
),
]
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/26149#comment:10>
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