reverse manytomany field between access restrictions and their groups

src/c3nav/mapdata/migrations/0114_accessrestrictiongroup_members.py

@@ -0,0 +1,41 @@
+# Generated by Django 5.0.8 on 2024-12-11 13:24
+
+from django.db import migrations, models
+
+
+def forwards_func(apps, schema_editor):
+    AccessRestrictionGroup = apps.get_model('mapdata', 'AccessRestrictionGroup')
+    for group in AccessRestrictionGroup.objects.prefetch_related("accessrestrictions").all():
+        group.members.set(group.accessrestrictions.all())
+
+
+def backwards_func(apps, schema_editor):
+    AccessRestrictionGroup = apps.get_model('mapdata', 'AccessRestrictionGroup')
+    for group in AccessRestrictionGroup.objects.prefetch_related("members").all():
+        group.accessrestrictions.set(group.members.all())
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('mapdata', '0113_locationgroup_can_report_mistake'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='accessrestrictiongroup',
+            name='members',
+            field=models.ManyToManyField(blank=True, to='mapdata.accessrestriction', verbose_name='Access Restrictions'),
+        ),
+        migrations.RunPython(forwards_func, backwards_func),
+        migrations.RemoveField(
+            model_name='accessrestriction',
+            name='groups',
+        ),
+        migrations.AlterField(
+            model_name='accessrestrictiongroup',
+            name='members',
+            field=models.ManyToManyField(blank=True, related_name='groups', to='mapdata.accessrestriction',
+                                         verbose_name='Access Restrictions'),
+        ),
+    ]