from django.db import migrations, models


class Migration(migrations.Migration):

    dependencies = [
        ('wpm', '0132_mlogbw_tooling_alter_mlogbw_equip'),
    ]

    operations = [
        migrations.SeparateDatabaseAndState(
            database_operations=[
                # Column already exists in DB; ensure it has a server-side default
                # so INSERT statements that omit the column don't violate NOT NULL.
                migrations.RunSQL(
                    sql="ALTER TABLE wpm_mlogbw ALTER COLUMN pre_info SET DEFAULT '{}'::jsonb",
                    reverse_sql="ALTER TABLE wpm_mlogbw ALTER COLUMN pre_info DROP DEFAULT",
                ),
            ],
            state_operations=[
                migrations.AddField(
                    model_name='mlogbw',
                    name='pre_info',
                    field=models.JSONField(blank=True, default=dict, verbose_name='预处理信息'),
                ),
            ],
        ),
    ]