fix: Added related_name to version content type field (#274)

* Add a `related_name` to the version model content_type foreign key. [fix #273]

* Updated changelog

---------

Co-authored-by: Fabian Braun <fsbraun@gmx.de>

CHANGELOG.rst

@@ -4,6 +4,7 @@ Changelog
 
 Unreleased
 ==========
+* fix: Added ``related_name`` attribute to the ``content_type`` foreign key of the ``Version`` model.
 * fix: burger menu adjusts to the design of django cms core dropdown
 * fix: bug that showed an archived version as unpublished in some cases in the state indicator
 * add: Dutch and French translations thanks to Stefan van den Eertwegh and François Palmierso

djangocms_versioning/migrations/0016_alter_version_content_type.py

@@ -0,0 +1,20 @@
+# Generated by Django 3.2.13 on 2022-05-20 21:11
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('contenttypes', '0002_remove_content_type_name'),
+        ('djangocms_versioning', '0015_version_modified'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='version',
+            name='content_type',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, related_name='cms_versions', to='contenttypes.contenttype'),
+        ),
+    ]

djangocms_versioning/models.py

@@ -79,7 +79,11 @@ class Version(models.Model):
         settings.AUTH_USER_MODEL, on_delete=models.PROTECT, verbose_name=_("author")
     )
     number = models.CharField(max_length=11)
-    content_type = models.ForeignKey(ContentType, on_delete=models.PROTECT)
+    content_type = models.ForeignKey(
+        ContentType,
+        on_delete=models.PROTECT,
+        related_name="cms_versions"
+    )
     object_id = models.PositiveIntegerField()
     content = GenericForeignKey("content_type", "object_id")
     state = FSMField(