[Answered ]-How can I tell django how to revert custom migration?

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The RunSQL migration [Django-doc] takes a second optional parameter where you can specify the reverse migration, so:

class Migration(migrations.Migration):

    dependencies = [('polls', '0001_initial')]

    operations = [
        migrations.RunSQL(
            'ALTER TABLE comments RENAME COLUMN contents TO text;',
            'ALTER TABLE comments RENAME COLUMN text TO contents;',
        ),
    ]

If you then migrate to:

manage.py migrate polls 0001

it will look if all migrations have a reverse operation, and take that query.

👤willeM_ Van Onsem

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