wip: add index of unaccented upper value of role.name

src/authentic2/a2_rbac/migrations/0040_role_name_idx.py

@@ -0,0 +1,25 @@
+# Generated by Django 3.2.23 on 2024-03-28 16:23
+
+import django.db.models.expressions
+import django.db.models.functions.text
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ('a2_rbac', '0039_set_user_view_permissions_by_ou'),
+    ]
+
+    operations = [
+        migrations.AddIndex(
+            model_name='role',
+            index=models.Index(
+                django.db.models.functions.text.Upper(
+                    django.db.models.expressions.Func(
+                        django.db.models.expressions.F('name'), name='immutable_unaccent'
+                    )
+                ),
+                name='name_idx',
+            ),
+        ),
+    ]

src/authentic2/a2_rbac/models.py

@@ -27,6 +27,7 @@ from django.contrib.postgres.fields import ArrayField
 from django.core.exceptions import ValidationError
 from django.core.validators import MinValueValidator
 from django.db import models
+from django.db.models.functions import Upper
 from django.db.models.query import Prefetch, Q
 from django.urls import reverse
 from django.utils.text import slugify
@@ -614,6 +615,9 @@ class Role(AbstractBase):
                 condition=models.Q(service__isnull=True, ou__isnull=True, admin_scope_ct__isnull=True),
             ),
         ]
+        indexes = [
+            models.Index(Upper(models.Func(models.F('name'), name='immutable_unaccent')), name='name_idx')
+        ]
 
     def natural_key(self):
         return [