[Bug 1083423] Add actstream hooks to Questions and Answers.

This causes Questions and Answers to create Actions objects when
created. These objects don't do anything yet, and aren't visible, but
they will exist in the database. The UI and APIs for this will come
later.

kitsune/notifications/models.py

@@ -3,6 +3,8 @@
 from django.contrib.auth.models import User
 from django.db import models
 
+import actstream.registry
+
 from kitsune.sumo.models import ModelBase
 
 
@@ -11,3 +13,6 @@ class PushNotificationRegistration(ModelBase):
     creator = models.ForeignKey(User, db_index=True)
     created = models.DateTimeField(default=datetime.now)
     push_url = models.CharField(max_length=256)
+
+
+actstream.registry.register(User)

kitsune/questions/models.py

@@ -10,12 +10,15 @@
 from django.core.cache import cache
 from django.core.urlresolvers import resolve
 from django.conf import settings
+from django.dispatch import receiver
 from django.db import models, connection, close_old_connections
 from django.db.models import Q
 from django.db.models.signals import post_save, pre_save
 from django.db.utils import IntegrityError
 from django.http import Http404
 
+import actstream
+import actstream.registry
 from product_details import product_details
 from statsd import statsd
 from taggit.models import Tag, TaggedItem
@@ -1332,3 +1335,26 @@ def _content_parsed(obj, locale):
         html = wiki_to_html(obj.content, locale)
         cache.add(cache_key, html, CACHE_TIMEOUT)
     return html
+
+
+actstream.registry.register(Question)
+actstream.registry.register(Answer)
+
+
+@receiver(post_save, sender=Question, dispatch_uid='question_create_actionstream')
+def add_action_for_new_question(sender, instance, created, **kwargs):
+    if created:
+        actstream.action.send(
+            instance.creator,
+            verb='asked',
+            action_object=instance)
+
+
+@receiver(post_save, sender=Answer, dispatch_uid='answer_create_actionstream')
+def add_action_for_new_answer(sender, instance, created, **kwargs):
+    if created:
+        actstream.action.send(
+            instance.creator,
+            verb='answered',
+            action_object=instance,
+            target=instance.question)

kitsune/questions/tests/test_models.py

@@ -4,6 +4,7 @@
 from django.db.models import Q
 
 import mock
+from actstream.models import Action
 from nose.tools import eq_, ok_, raises
 from taggit.models import Tag
 
@@ -581,3 +582,36 @@ def test_add_metadata_over_1000_chars(self):
         qv.add_metadata('test1', 'a'*1001)
         metadata = VoteMetadata.objects.all()[0]
         eq_('a'*1000, metadata.value)
+
+
+class TestSignals(TestCase):
+    def test_question_create_action(self):
+        """When a question is created, an Action is created too."""
+        q = question(save=True)
+        a = Action.objects.action_object(q).get()
+        eq_(a.actor, q.creator)
+        eq_(a.verb, 'asked')
+        eq_(a.target, None)
+
+    def test_answer_create_action(self):
+        """When an answer is created, an Action is created too."""
+        q = question(save=True)
+        ans = answer(question=q, save=True)
+        act = Action.objects.action_object(ans).get()
+        eq_(act.actor, ans.creator)
+        eq_(act.verb, 'answered')
+        eq_(act.target, q)
+
+    def test_question_change_no_action(self):
+        """When a question is changed, no action should be created."""
+        q = question(save=True)
+        Action.objects.all().delete()
+        q.save()  # trigger another post_save hook
+        eq_(Action.objects.count(), 0)
+
+    def test_answer_change_no_action(self):
+        """When an answer is changed, no action should be created."""
+        a = question(save=True)
+        Action.objects.all().delete()
+        a.save()  # trigger another post_save hook
+        eq_(Action.objects.count(), 0)