#24260: Add migration support for logical field renames
-----------------------------+------------------------------------
Reporter: pennersr | Owner: nobody
Type: New feature | Status: new
Component: Migrations | Version: 1.7
Severity: Normal | Resolution:
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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Comment (by MarkusH):
You should get it working with
{{{#!python
operations = [
migrations.AlterField(
model_name='foo',
name='foo_id',
field=models.AutoField(db_column='foo_id', primary_key=True,
serialize=False),
),
migrations.RenameField(
model_name='foo',
old_name='foo_id',
new_name='id',
),
]
}}}
This can be semi-automated by first ensuring the field arguments are
explicitly set for `foo_id` (`foo_id = models.AutoField(primary_key=True,
db_column='foo_id')`, then running makemigrations followed by a rename
(`id = models.AutoField(primary_key=True, db_column='foo_id')` and another
makemigrations (the latter will ask if `foo.foo_id` is being renamed to
`foo.id`).
I don't, however, see a way how Django could automatically detect these
changes in a single run, given that we have to check for renamed fields
first:
https://github.com/django/django/blob/master/django/db/migrations/autodetector.py#L183-L186
. After all, we will end up with two operations.
--
Ticket URL: <https://code.djangoproject.com/ticket/24260#comment:4>
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