Ongoing development of "Things"

boxes/migrations/0003_convert_thingtype_to_mptt.py

@@ -0,0 +1,68 @@
+# Generated by Django 5.2.9 on 2025-12-28 19:39
+
+import django.db.models.deletion
+import mptt.fields
+from django.db import migrations, models
+
+
+def rebuild_tree(apps, schema_editor):
+    """Rebuild MPTT tree after adding fields."""
+    ThingType = apps.get_model('boxes', 'ThingType')
+    # Import the actual model to use rebuild
+    from boxes.models import ThingType as RealThingType
+    RealThingType.objects.rebuild()
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('boxes', '0002_thingtype_thing'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='thingtype',
+            name='parent',
+            field=mptt.fields.TreeForeignKey(
+                blank=True,
+                null=True,
+                on_delete=django.db.models.deletion.CASCADE,
+                related_name='children',
+                to='boxes.thingtype'
+            ),
+        ),
+        migrations.AddField(
+            model_name='thingtype',
+            name='level',
+            field=models.PositiveIntegerField(default=0, editable=False),
+            preserve_default=False,
+        ),
+        migrations.AddField(
+            model_name='thingtype',
+            name='lft',
+            field=models.PositiveIntegerField(default=0, editable=False),
+            preserve_default=False,
+        ),
+        migrations.AddField(
+            model_name='thingtype',
+            name='rght',
+            field=models.PositiveIntegerField(default=0, editable=False),
+            preserve_default=False,
+        ),
+        migrations.AddField(
+            model_name='thingtype',
+            name='tree_id',
+            field=models.PositiveIntegerField(db_index=True, default=0, editable=False),
+            preserve_default=False,
+        ),
+        migrations.AlterModelOptions(
+            name='thingtype',
+            options={},
+        ),
+        migrations.AlterField(
+            model_name='thingtype',
+            name='name',
+            field=models.CharField(max_length=255),
+        ),
+        migrations.RunPython(rebuild_tree, migrations.RunPython.noop),
+    ]