Remove RealGroup and MetaGroup

club/admin.py

@@ -20,6 +20,17 @@
 @admin.register(Club)
 class ClubAdmin(admin.ModelAdmin):
     list_display = ("name", "unix_name", "parent", "is_active")
+    search_fields = ("name", "unix_name")
+    autocomplete_fields = (
+        "parent",
+        "board_group",
+        "members_group",
+        "view_groups",
+        "edit_groups",
+        "owner_group",
+        "home",
+        "page",
+    )
 
 
 @admin.register(Membership)

club/migrations/0012_club_board_group_club_members_group.py

@@ -0,0 +1,117 @@
+# Generated by Django 4.2.16 on 2024-11-20 17:08
+
+import django.db.models.deletion
+import django.db.models.functions.datetime
+from django.conf import settings
+from django.db import migrations, models
+from django.db.migrations.state import StateApps
+from django.db.models import Q
+from django.utils.timezone import localdate
+
+
+def migrate_meta_groups(apps: StateApps, schema_editor):
+    """Attach the existing meta groups to the clubs.
+
+    Until now, the meta groups were not attached to the clubs,
+    nor to the users.
+    This creates actual foreign relationships between the clubs
+    and theirs groups and the users and theirs groups.
+
+    Warnings:
+        When the meta groups associated with the clubs aren't found,
+        they are created.
+        Thus the migration shouldn't fail, and all the clubs will
+        have their groups.
+        However, there will probably be some groups that have
+        not been found but exist nonetheless,
+        so there will be duplicates and dangling groups.
+        There must be a manual cleanup after this migration.
+    """
+    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.save()
+        club.refresh_from_db()
+        memberships = club.members.filter(
+            Q(end_date=None) | Q(end_date__gt=localdate())
+        ).select_related("user")
+        club.members_group.users.set([m.user for m in memberships])
+        club.board_group.users.set(
+            [
+                m.user
+                for m in memberships.filter(role__gt=settings.SITH_MAXIMUM_FREE_ROLE)
+            ]
+        )
+
+
+# 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",
+            ),
+        ),
+        migrations.AddConstraint(
+            model_name="membership",
+            constraint=models.CheckConstraint(
+                check=models.Q(("end_date__gte", models.F("start_date"))),
+                name="end_after_start",
+            ),
+        ),
+    ]