Added history tracking to ManyToManyFields

...that exist on models that already have history tracking.

Note that the many-to-many selection for these fields *are* correctly saved, they're just currently not correctly displayed in the objects' history
page in Django admin (the *current* M2M selection is always shown); see jazzband/django-simple-history#1063.

contentbox/migrations/0015_historicalcontentbox_extra_change_permissions.py

@@ -0,0 +1,62 @@
+# Generated by Django 4.1.3 on 2022-11-21 03:42
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("auth", "0012_alter_user_first_name_max_length"),
+        ("contentbox", "0014_history_date_db_index"),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="HistoricalContentBox_extra_change_permissions",
+            fields=[
+                (
+                    "id",
+                    models.BigIntegerField(
+                        auto_created=True, blank=True, db_index=True, verbose_name="ID"
+                    ),
+                ),
+                ("m2m_history_id", models.AutoField(primary_key=True, serialize=False)),
+                (
+                    "contentbox",
+                    models.ForeignKey(
+                        blank=True,
+                        db_constraint=False,
+                        db_tablespace="",
+                        null=True,
+                        on_delete=django.db.models.deletion.DO_NOTHING,
+                        related_name="+",
+                        to="contentbox.contentbox",
+                    ),
+                ),
+                (
+                    "history",
+                    models.ForeignKey(
+                        db_constraint=False,
+                        on_delete=django.db.models.deletion.DO_NOTHING,
+                        to="contentbox.historicalcontentbox",
+                    ),
+                ),
+                (
+                    "permission",
+                    models.ForeignKey(
+                        blank=True,
+                        db_constraint=False,
+                        db_tablespace="",
+                        null=True,
+                        on_delete=django.db.models.deletion.DO_NOTHING,
+                        related_name="+",
+                        to="auth.permission",
+                    ),
+                ),
+            ],
+            options={
+                "verbose_name": "HistoricalContentBox_extra_change_permissions",
+            },
+        ),
+    ]

contentbox/models.py

@@ -28,7 +28,7 @@ class ContentBox(models.Model):
     )
     last_modified = models.DateTimeField(auto_now=True, verbose_name=_("last modified"))
 
-    history = HistoricalRecords(excluded_fields=['last_modified'])
+    history = HistoricalRecords(m2m_fields=[extra_change_permissions], excluded_fields=['last_modified'])
 
     class Meta:
         permissions = (

faq/migrations/0006_historicalquestion_categories.py

@@ -0,0 +1,61 @@
+# Generated by Django 4.1.3 on 2022-11-21 03:42
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("faq", "0005_history_date_db_index"),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="HistoricalQuestion_categories",
+            fields=[
+                (
+                    "id",
+                    models.BigIntegerField(
+                        auto_created=True, blank=True, db_index=True, verbose_name="ID"
+                    ),
+                ),
+                ("m2m_history_id", models.AutoField(primary_key=True, serialize=False)),
+                (
+                    "category",
+                    models.ForeignKey(
+                        blank=True,
+                        db_constraint=False,
+                        db_tablespace="",
+                        null=True,
+                        on_delete=django.db.models.deletion.DO_NOTHING,
+                        related_name="+",
+                        to="faq.category",
+                    ),
+                ),
+                (
+                    "history",
+                    models.ForeignKey(
+                        db_constraint=False,
+                        on_delete=django.db.models.deletion.DO_NOTHING,
+                        to="faq.historicalquestion",
+                    ),
+                ),
+                (
+                    "question",
+                    models.ForeignKey(
+                        blank=True,
+                        db_constraint=False,
+                        db_tablespace="",
+                        null=True,
+                        on_delete=django.db.models.deletion.DO_NOTHING,
+                        related_name="+",
+                        to="faq.question",
+                    ),
+                ),
+            ],
+            options={
+                "verbose_name": "HistoricalQuestion_categories",
+            },
+        ),
+    ]

faq/models.py

@@ -41,7 +41,7 @@ class Question(models.Model):
     )
     last_modified = models.DateTimeField(auto_now=True, verbose_name=_("last modified"))
 
-    history = HistoricalRecords(excluded_fields=['last_modified'])
+    history = HistoricalRecords(m2m_fields=[categories], excluded_fields=['last_modified'])
 
     class Meta:
         verbose_name = _("question")

groups/migrations/0013_historicalinheritancegroup_own_permissions.py

@@ -0,0 +1,64 @@
+# Generated by Django 4.1.3 on 2022-11-21 03:42
+
+from django.db import migrations, models
+import django.db.models.deletion
+import simple_history.models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("auth", "0012_alter_user_first_name_max_length"),
+        ("groups", "0012_history_date_db_index"),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="HistoricalInheritanceGroup_own_permissions",
+            fields=[
+                (
+                    "id",
+                    models.BigIntegerField(
+                        auto_created=True, blank=True, db_index=True, verbose_name="ID"
+                    ),
+                ),
+                ("m2m_history_id", models.AutoField(primary_key=True, serialize=False)),
+                (
+                    "history",
+                    models.ForeignKey(
+                        db_constraint=False,
+                        on_delete=django.db.models.deletion.DO_NOTHING,
+                        to="groups.historicalinheritancegroup",
+                    ),
+                ),
+                (
+                    "inheritancegroup",
+                    models.ForeignKey(
+                        blank=True,
+                        db_constraint=False,
+                        db_tablespace="",
+                        null=True,
+                        on_delete=django.db.models.deletion.DO_NOTHING,
+                        related_name="+",
+                        to="groups.inheritancegroup",
+                    ),
+                ),
+                (
+                    "permission",
+                    models.ForeignKey(
+                        blank=True,
+                        db_constraint=False,
+                        db_tablespace="",
+                        null=True,
+                        on_delete=django.db.models.deletion.DO_NOTHING,
+                        related_name="+",
+                        to="auth.permission",
+                    ),
+                ),
+            ],
+            options={
+                "verbose_name": "HistoricalInheritanceGroup_own_permissions",
+            },
+            bases=(simple_history.models.HistoricalChanges, models.Model),
+        ),
+    ]

groups/models.py

@@ -38,7 +38,8 @@ class InheritanceGroup(Group):
     )
     last_modified = models.DateTimeField(auto_now=True, verbose_name=_("last modified"))
 
-    history = HistoricalRecords(excluded_fields=['last_modified'])
+    # TODO: Add `parents` to `m2m_fields` when https://github.com/jazzband/django-simple-history/issues/1126 is resolved
+    history = HistoricalRecords(m2m_fields=[own_permissions], excluded_fields=['last_modified'])
 
     @property
     def inherited_permissions(self):