#27338: Running an AlterField to change a CharField primary key to AutoField
crashes
------------------------------------------------+------------------------
Reporter: Tim Graham | Owner: nobody
Type: Cleanup/optimization | Status: new
Component: Migrations | Version: master
Severity: Normal | Keywords:
Triage Stage: Accepted | Has patch: 0
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
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For example: change `id = models.CharField(max_length=20,
primary_key=True)` to `id = models.AutoField(primary_key=True)`. It
generates this operation:
{{{
migrations.AlterField(
model_name='foo',
name='id',
field=models.AutoField(primary_key=True, serialize=False),
),
}}}
Running it on PostgreSQ gives: `django.db.utils.ProgrammingError: operator
class "varchar_pattern_ops" does not accept data type integer`. I'm not
sure if this can be made to work sensibly. Is it possible to autopopulate
the `AutoField`? I ran into this situation while investigating #27267.
--
Ticket URL: <https://code.djangoproject.com/ticket/27338>
Django <https://code.djangoproject.com/>
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