Trash versions when deleting head docs

src/documents/models.py

@@ -436,6 +436,12 @@ class Document(SoftDeleteModel, ModelWithOwner):
         tags_to_add = self.tags.model.objects.filter(id__in=tag_ids)
         self.tags.add(*tags_to_add)
 
+    def delete(self, using=None, *, keep_parents=False):
+        # If deleting a head document, move all versions to trash as well.
+        if self.head_version_id is None:
+            Document.objects.filter(head_version=self).delete()
+        return super().delete(using=using, keep_parents=keep_parents)
+
 
 class SavedView(ModelWithOwner):
     class DisplayMode(models.TextChoices):