From b4c640254fa948c206c390d7bc1928b2e9cb560a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Laura=20Kl=C3=BCnder?= <laura@codingcatgirl.de>
Date: Mon, 12 Jun 2017 15:06:51 +0200
Subject: [PATCH] dont add changes to finished changesets

---
 src/c3nav/editor/models.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/c3nav/editor/models.py b/src/c3nav/editor/models.py
index e9774c67..676722a0 100644
--- a/src/c3nav/editor/models.py
+++ b/src/c3nav/editor/models.py
@@ -148,4 +148,6 @@ class Change(models.Model):
             self.full_clean()
             if self.pk is not None:
                 raise ValidationError('change objects can not be edited.')
+            if self.changeset.proposed is not None or self.changeset.applied is not None:
+                raise ValidationError('can not add change object to uneditable changeset.')
             super().save(*args, **kwargs)