stages/user_write: add migration that removes unintended data

passbook/stages/user_write/migrations/0002_auto_20200918_1653.py

@@ -0,0 +1,27 @@
+# Generated by Django 3.1.1 on 2020-09-18 16:53
+
+from django.apps.registry import Apps
+from django.db import migrations
+from django.db.backends.base.schema import BaseDatabaseSchemaEditor
+
+
+def remove_unintended_attributes(apps: Apps, schema_editor: BaseDatabaseSchemaEditor):
+    db_alias = schema_editor.connection.alias
+    User = apps.get_model("passbook_core", "User")
+    for user in User.objects.using(db_alias).all():
+        if "password_repeat" in user.attributes:
+            del user.attributes["password_repeat"]
+        if "password" in user.attributes:
+            del user.attributes["password"]
+        user.save()
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("passbook_stages_user_write", "0001_initial"),
+    ]
+
+    operations = [
+        migrations.RunPython(remove_unintended_attributes),
+    ]