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https://github.com/jazzband/django-constance.git
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33 lines
1 KiB
Python
33 lines
1 KiB
Python
from django.core.management.color import no_style
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from django.db import migrations, connection, DatabaseError
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def _migrate_from_old_table(apps, schema_editor) -> None:
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"""
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Copies values from old table.
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On new installations just ignore error that table does not exist.
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"""
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try:
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with connection.cursor() as cursor:
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cursor.execute('INSERT INTO constance_constance ( id, key, value ) SELECT id, key, value FROM constance_config', [])
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cursor.execute('DROP TABLE constance_config', [])
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except DatabaseError:
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pass
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Constance = apps.get_model('constance', 'Constance')
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sequence_sql = connection.ops.sequence_reset_sql(no_style(), [Constance])
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with connection.cursor() as cursor:
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for sql in sequence_sql:
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cursor.execute(sql)
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class Migration(migrations.Migration):
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dependencies = [('constance', '0001_initial')]
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atomic = False
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operations = [
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migrations.RunPython(_migrate_from_old_table, reverse_code=lambda x, y: None),
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]
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