#36721: Template for data migrations?
----------------------------------+---------------------------------------
Reporter: Willem Van Onsem | Type: New feature
Status: new | Component: Migrations
Version: 5.2 | Severity: Normal
Keywords: | Triage Stage: Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
----------------------------------+---------------------------------------
When running:
{{{
manage.py makemigrations --empty app_name
}}}
we get a file that looks like:
{{{
# Generated by Django 5.2.4 on 2025-11-10 09:23
from django.db import migrations
class Migration(migrations.Migration):
dependencies = [
("app_name", "0123_other_migration"),
]
operations = []
}}}
I find it a bit incovenient that each time, I have to remember how to add
a `RunPython` migration: this is something that happens regularly, but
probably not regularly enough to just remember it.
Is it an idea to make a template that looks like:
{{{
# Generated by Django 5.2.4 on 2025-11-10 09:23
from django.db import migrations
def forward(apps, schema_editor):
MyModel = apps.get_model('app_name', 'MyModel')
class Migration(migrations.Migration):
dependencies = [
("app_name", "0123_other_migration"),
]
operations = [
migrations.RunPython(forward)
]
}}}
This would increase productivity a bit, but I think it will also help
users not to import models directly but use the historic models at the
time of the migration (probably something that i not always done neatly).
Furthermore the migration will by default fail (since no MyModel exists,
and therefore prevents adding an empty migration to the chain).
--
Ticket URL: <https://code.djangoproject.com/ticket/36721>
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 visit
https://groups.google.com/d/msgid/django-updates/0107019a6d18ac6e-6de73650-4300-45e3-af3e-6bcb002929e6-000000%40eu-central-1.amazonses.com.
