#30152: MySQL: "Cannot change column 'id': used in a foreign key constraint"
when
altering pk of model with ForeignKey to self
-------------------------------+-------------------------------------
Reporter: Carsten Fuchs | Owner: nobody
Type: Bug | Status: closed
Component: Migrations | Version: 2.2
Severity: Normal | Resolution: needsinfo
Keywords: mysql | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------+-------------------------------------
Comment (by Carsten Fuchs):
Ah, slowly I get the hang of working with migrations in this way! :-)
Sorry about the extra fields. Also the meta `db_table` doesn't contribute.
The minimum models.py file I've managed to find is:
{{{
#!python
class Kostenstelle(models.Model):
# id = models.AutoField(primary_key=True)
id = models.IntegerField(primary_key=True, help_text="...")
parent = models.ForeignKey('self', models.PROTECT, null=True,
blank=True)
class KalenderEintrag(models.Model):
id = models.AutoField(primary_key=True)
kst = models.ManyToManyField(Kostenstelle, blank=True)
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/30152#comment:5>
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 post to this group, send email to [email protected].
To view this discussion on the web visit
https://groups.google.com/d/msgid/django-updates/066.0ef3bfeeccb2cba40829fa379acaf42d%40djangoproject.com.
For more options, visit https://groups.google.com/d/optout.
