#34151: django.db.migrations doesn't update *_id column data type in related
table
when changing pk type of linked models.
-------------------------------------+-------------------------------------
Reporter: STANISLAV LEPEKHOV | Owner: nobody
Type: Bug | Status: new
Component: Core (Management | Version: 4.1
commands) |
Severity: Normal | Resolution:
Keywords: migrations pk uuid | Triage Stage:
relation | Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 1 | UI/UX: 0
-------------------------------------+-------------------------------------
Description changed by STANISLAV LEPEKHOV:
Old description:
> Hello!
> When i changed this models:
>
> {{{
> class StoreChain(models.Model):
> places = models.ManyToManyField(Place, blank=True)
>
> class Place(models.Model):
> uid = models.UUIDField(default=uuid.uuid4, editable=False,
> primary_key=True, unique=True)
> }}}
>
> to this edition (set pk with uuid type):
> {{{
> class StoreChain(models.Model):
> uid = models.UUIDField(default=uuid.uuid4, editable=False,
> primary_key=True, unique=True)
> places = models.ManyToManyField(Place, blank=True)
>
> class Place(models.Model):
> uid = models.UUIDField(default=uuid.uuid4, editable=False,
> primary_key=True, unique=True)
> }}}
>
> Django creates a migration file that affects only the model tables, while
> the relationship table remains unchanged, which will cause an error,
> because the data type of the _ID fields in it also needs to be changed:
> [[Image(https://i.ibb.co/XZYjvYp/hU0HJyqF.jpg)]]
New description:
Hello!
When i changed this models:
{{{
class StoreChain(models.Model):
places = models.ManyToManyField(Place, blank=True)
class Place(models.Model):
pass
}}}
to this edition (set pk with uuid type):
{{{
class StoreChain(models.Model):
uid = models.UUIDField(default=uuid.uuid4, editable=False,
primary_key=True, unique=True)
places = models.ManyToManyField(Place, blank=True)
class Place(models.Model):
uid = models.UUIDField(default=uuid.uuid4, editable=False,
primary_key=True, unique=True)
}}}
Django creates a migration file that affects only the model tables, while
the relationship table remains unchanged, which will cause an error,
because the data type of the _ID fields in it also needs to be changed:
[[Image(https://i.ibb.co/XZYjvYp/hU0HJyqF.jpg)]]
--
--
Ticket URL: <https://code.djangoproject.com/ticket/34151#comment:1>
Django <https://code.djangoproject.com/>
The Web framework for perfectionists with deadlines.
--
You received this message because you are subscribed to the Google Groups
"Django updates" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To view this discussion on the web visit
https://groups.google.com/d/msgid/django-updates/0107018467075cc1-cec56be6-b1b1-4e07-9fa6-cf8d29de2257-000000%40eu-central-1.amazonses.com.
