Don't crash in backend social media post viewer if provider is removed

If a provider that already had something posted using it was removed,
the backend view would crash when trying to show it. Instead, just don't
show the results posted on that provider.

diff --git a/postgresqleu/confreg/models.py b/postgresqleu/confreg/models.py
index 61117832f22e626e06ac35d7aacea1b0d4ba2630..e2ab7ce01e1eaaf413a15bdb99c9d2ab28ae10a5 100644 (file)
--- a/postgresqleu/confreg/models.py
+++ b/postgresqleu/confreg/models.py
@@ -1678,6 +1678,7 @@ class ConferenceTweetQueue(models.Model):
             return LineBreakString("\n".join(
                 "{}: {}".format(cache['providers'][k].internalname, v)
                 for k, v in self.contents.items()
+                if k in cache['providers']
             ))
         return self.contents