Convert readonly_fields to tuple before concatenating

KristianOellegaard · May 27, 2016 · 1b94f8a · 1b94f8a
1 parent 4b3d70d
commit 1b94f8a
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/hvad/admin.py b/hvad/admin.py
@@ -146,7 +146,7 @@ def get_form(self, request, obj=None, **kwargs):
         exclude = (
             tuple(self.exclude or ()) +
             tuple(kwargs.pop("exclude", ())) +
-            self.get_readonly_fields(request, obj)
+            tuple(self.get_readonly_fields(request, obj) or ())
         )
         old_formfield_callback = curry(self.formfield_for_dbfield, request=request)
         defaults = {