Added guards against duplicate m2m entries.

- Legacy-Id: 16304

ietf/community/tests.py

@@ -87,6 +87,7 @@ class CommunityListTests(TestCase):
 
         # with list
         clist = CommunityList.objects.create(user=User.objects.get(username="plain"))
+        if not draft in clist.added_docs.all():
             clist.added_docs.add(draft)
         SearchRule.objects.create(
             community_list=clist,
@@ -249,6 +250,7 @@ class CommunityListTests(TestCase):
 
         # with list
         clist = CommunityList.objects.create(user=User.objects.get(username="plain"))
+        if not draft in clist.added_docs.all():
             clist.added_docs.add(draft)
         SearchRule.objects.create(
             community_list=clist,
@@ -284,6 +286,7 @@ class CommunityListTests(TestCase):
 
         # with list
         clist = CommunityList.objects.create(user=User.objects.get(username="plain"))
+        if not draft in clist.added_docs.all():
             clist.added_docs.add(draft)
         SearchRule.objects.create(
             community_list=clist,
@@ -325,6 +328,7 @@ class CommunityListTests(TestCase):
 
         # subscription with list
         clist = CommunityList.objects.create(user=User.objects.get(username="plain"))
+        if not draft in clist.added_docs.all():
             clist.added_docs.add(draft)
         SearchRule.objects.create(
             community_list=clist,
@@ -368,6 +372,7 @@ class CommunityListTests(TestCase):
         draft = WgDraftFactory()
 
         clist = CommunityList.objects.create(user=User.objects.get(username="plain"))
+        if not draft in clist.added_docs.all():
             clist.added_docs.add(draft)
 
         EmailSubscription.objects.create(community_list=clist, email=Email.objects.filter(person__user__username="plain").first(), notify_on="significant")

ietf/community/views.py

@@ -53,6 +53,7 @@ def manage_list(request, username=None, acronym=None, group_type=None):
                 clist.save()
 
             for d in add_doc_form.cleaned_data['documents']:
+                if not d in clist.added_docs.all():
                     clist.added_docs.add(d)
 
             return HttpResponseRedirect("")
@@ -130,6 +131,7 @@ def track_document(request, name, username=None, acronym=None):
         if clist.pk is None:
             clist.save()
 
+        if not doc in clist.added_docs.all():
             clist.added_docs.add(doc)
 
         if request.is_ajax():