Django 1.8.4 makemigrations CreateModel changes field's order

问题

We've just switched to Django 1.8.4 (from 1.6, so first time using migrations), and we've noticed an issue when using the makemigrations command. The issue happens when creating a new model that contains Foreign Keys. The command generates a migration file with the field order changed: it sets all the FKs last, and reorganizes them by alphabetical order.

Here's an example :

class AnotherRandomModel(models.Model):
    attr1 = models.FloatField()

class AnotherRandomModel2(models.Model):
    attr1 = models.FloatField()

class RandomModel(models.Model):
    fk2 = models.ForeignKey(AnotherRandomModel2)
    attr2 = models.FloatField()
    fk1 = models.ForeignKey(AnotherRandomModel)
    attr1 = models.FloatField()

That will generate this migration file :

class Migration(migrations.Migration):

    dependencies = []

    operations = [
        migrations.CreateModel(
            name='AnotherRandomModel',
            fields=[
                ('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
                ('attr1', models.FloatField()),
            ],
        ),
        migrations.CreateModel(
            name='AnotherRandomModel2',
            fields=[
                ('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
                ('attr1', models.FloatField()),
            ],
        ),
        migrations.CreateModel(
            name='RandomModel',
            fields=[
                ('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
                ('attr2', models.FloatField()),
                ('attr1', models.FloatField()),
                ('fk1', models.ForeignKey(to='inventorylab.AnotherRandomModel')),
                ('fk2', models.ForeignKey(to='inventorylab.AnotherRandomModel2')),
            ],
        ),
    ]

You can see how it kept the non-FK fields order, but set both FK at the end an re-ordered them.

That's quite disturbing not to have the same order on the model as on the database. Does anyone know how to force the command to keep the order of the model?

I know I can always edit manually the created migration file, but I'll like to avoid doing that.

来源：https://stackoverflow.com/questions/32454421/django-1-8-4-makemigrations-createmodel-changes-fields-order

标签

python

django

django-migrations

django-1.8