# Generated by Django 2.2.7 on 2019-12-06 08:07 import assets.models.asset from django.db import migrations, models import django.db.models.deletion def migrate_platform_to_asset_type(apps, schema_editor): asset_model = apps.get_model("assets", "Asset") platform_model = apps.get_model("assets", "Platform") db_alias = schema_editor.connection.alias platforms = platform_model.objects.using(db_alias).all() platforms_map = {p.name: p for p in platforms} for name, p in platforms_map.items(): asset_model.objects.using(db_alias)\ .filter(_platform=name)\ .update(platform=p) class Migration(migrations.Migration): dependencies = [ ('assets', '0044_platform'), ] operations = [ migrations.RenameField( model_name='asset', old_name='platform', new_name='_platform', ), migrations.AddField( model_name='asset', name='platform', field=models.ForeignKey( default='', on_delete=django.db.models.deletion.PROTECT, related_name='assets', to='assets.Platform', verbose_name='Platform'), ), migrations.RunPython(migrate_platform_to_asset_type), migrations.RemoveField( model_name='asset', name='_platform', ), ]