polls: add new signal which is called after a user voted on a poll

adhocracy4/polls/api.py

@@ -30,6 +30,7 @@
 from .models import Question
 from .models import Vote
 from .serializers import PollSerializer
+from .signals import poll_voted
 
 
 class PollViewSet(
@@ -178,6 +179,8 @@ def vote(self, request, pk):
             self.save_vote(question, vote_data, creator, content_id)
 
         poll = self.get_object()
+        print("##########################################")
+        poll_voted.send(sender=None, poll=poll, creator=creator, content_id=content_id)
         poll_serializer = self.get_serializer(poll)
         poll_data = self.add_terms_of_use_info(request, poll_serializer.data)
         if not self.request.user.is_authenticated:

adhocracy4/polls/signals.py

@@ -0,0 +1,3 @@
+from django.dispatch import Signal
+
+poll_voted = Signal()

changelog/8381.md

@@ -0,0 +1,3 @@
+### Added
+
+- add a poll_voted signal which is sent when a user has voted on a poll.