Added exception catching around an urlreverse that might fail. (Enumerating valid group types will also work, but can get out of sync, so this is more DRY).

- Legacy-Id: 18437

ietf/doc/views_doc.py

@@ -47,6 +47,7 @@ from django.http import HttpResponse, Http404
 from django.shortcuts import render, get_object_or_404, redirect
 from django.template.loader import render_to_string
 from django.urls import reverse as urlreverse
+from django.urls.exceptions import NoReverseMatch
 from django.conf import settings
 from django import forms
 
@@ -290,7 +291,10 @@ def document_main(request, name, rev=None):
             submission = "individual in %s area" % group.acronym
         else:
             submission = "%s %s" % (group.acronym, group.type)
-            submission = "<a href=\"%s\">%s</a>" % (urlreverse("ietf.group.views.group_home", kwargs=dict(group_type=group.type_id, acronym=group.acronym)), submission)
+            try:
+                submission = "<a href=\"%s\">%s</a>" % (urlreverse("ietf.group.views.group_home", kwargs=dict(group_type=group.type_id, acronym=group.acronym)), submission)
+            except NoReverseMatch:
+                pass
             if doc.stream_id and doc.get_state_slug("draft-stream-%s" % doc.stream_id) == "c-adopt":
                 submission = "candidate for %s" % submission