replace MetaGroups by proper group management

club/migrations/0012_club_board_group_club_members_group.py

@@ -0,0 +1,79 @@
+# Generated by Django 4.2.16 on 2024-11-20 17:08
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+from django.db.migrations.state import StateApps
+
+
+def migrate_meta_groups(apps: StateApps, schema_editor):
+    Group = apps.get_model("core", "Group")
+    Club = apps.get_model("club", "Club")
+
+    meta_groups = Group.objects.filter(is_meta=True)
+    clubs = list(Club.objects.all())
+    for club in clubs:
+        club.board_group = meta_groups.get_or_create(
+            name=club.unix_name + settings.SITH_BOARD_SUFFIX
+        )[0]
+        club.members_group = meta_groups.get_or_create(
+            name=club.unix_name + settings.SITH_MEMBER_SUFFIX
+        )[0]
+    Club.objects.bulk_update(clubs, fields=["board_group", "members_group"])
+
+
+# steps of the migration :
+# - Create a nullable field for the board group and the member group
+# - Edit those new fields to make them point to currently existing meta groups
+# - When this data migration is done, make the fields non-nullable
+class Migration(migrations.Migration):
+    dependencies = [
+        ("core", "0040_alter_user_options_user_user_permissions_and_more"),
+        ("club", "0011_auto_20180426_2013"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="club",
+            name="board_group",
+            field=models.OneToOneField(
+                blank=True,
+                null=True,
+                on_delete=django.db.models.deletion.CASCADE,
+                related_name="club_board",
+                to="core.group",
+            ),
+        ),
+        migrations.AddField(
+            model_name="club",
+            name="members_group",
+            field=models.OneToOneField(
+                blank=True,
+                null=True,
+                on_delete=django.db.models.deletion.CASCADE,
+                related_name="club",
+                to="core.group",
+            ),
+        ),
+        migrations.RunPython(
+            migrate_meta_groups, reverse_code=migrations.RunPython.noop, elidable=True
+        ),
+        migrations.AlterField(
+            model_name="club",
+            name="board_group",
+            field=models.OneToOneField(
+                on_delete=django.db.models.deletion.CASCADE,
+                related_name="club_board",
+                to="core.group",
+            ),
+        ),
+        migrations.AlterField(
+            model_name="club",
+            name="members_group",
+            field=models.OneToOneField(
+                on_delete=django.db.models.deletion.CASCADE,
+                related_name="club",
+                to="core.group",
+            ),
+        ),
+    ]