1 files changed, 13 insertions, 0 deletions
diff --git a/ishtar_common/utils.py b/ishtar_common/utils.py
index 08e7a49b4..c88342782 100644
--- a/ishtar_common/utils.py
+++ b/ishtar_common/utils.py
@@ -1,6 +1,7 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 # Copyright (C) 2013-2016 Étienne Loks  <etienne.loks_AT_peacefrogsDOTnet>
+import json
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License as
@@ -2557,6 +2558,18 @@ def human_date(value):
     return value.strftime(settings.DATE_FORMAT)
 
 
+class StrJSONEncoder(json.JSONEncoder):
+    def default(self, o):
+        try:
+            return super().default(o)
+        except TypeError:
+            s = f"<{o.__class__.__name__}> "
+            if hasattr(o, "pk"):
+                s += f"[{o.pk}] "
+            s += str(o)
+            return s
+
+
 class IshtarFileSystemStorage(FileSystemStorage):
     def exists(self, name):
         path_name = self.path(name)