Add ENABLE_DISCUSSION_EMAIL_DIGEST feature, to enable discussion emails digest…

Add ENABLE_DISCUSSION_EMAIL_DIGEST feature, to enable discussion emails digest by default for all users

common/djangoapps/student/tests/test_create_account.py

@@ -14,6 +14,7 @@ import mock
 
 from openedx.core.djangoapps.user_api.models import UserPreference
 from lang_pref import LANGUAGE_KEY
+from notification_prefs import NOTIFICATION_PREF_KEY
 
 from edxmako.tests import mako_middleware_process_request
 from external_auth.models import ExternalAuthMap
@@ -50,8 +51,8 @@ class TestCreateAccount(TestCase):
     @ddt.data("en", "eo")
     def test_header_lang_pref_saved(self, lang):
         response = self.client.post(self.url, self.params, HTTP_ACCEPT_LANGUAGE=lang)
-        self.assertEqual(response.status_code, 200)
         user = User.objects.get(username=self.username)
+        self.assertEqual(response.status_code, 200)
         self.assertEqual(UserPreference.get_preference(user, LANGUAGE_KEY), lang)
 
     def base_extauth_bypass_sending_activation_email(self, bypass_activation_email_for_extauth_setting):
@@ -98,6 +99,18 @@ class TestCreateAccount(TestCase):
         """
         self.base_extauth_bypass_sending_activation_email(False)
 
+    @ddt.data(True, False)
+    def test_discussions_email_digest_pref(self, digest_enabled):
+        with mock.patch.dict("student.models.settings.FEATURES", {"ENABLE_DISCUSSION_EMAIL_DIGEST": digest_enabled}):
+            response = self.client.post(self.url, self.params)
+            self.assertEqual(response.status_code, 200)
+            user = User.objects.get(username=self.username)
+            preference = UserPreference.get_preference(user, NOTIFICATION_PREF_KEY)
+            if digest_enabled:
+                self.assertIsNotNone(preference)
+            else:
+                self.assertIsNone(preference)
+
 
 @mock.patch.dict("student.models.settings.FEATURES", {"ENABLE_DISCUSSION_SERVICE": True})
 @mock.patch("lms.lib.comment_client.User.base_url", TEST_CS_URL)

common/djangoapps/student/views.py

@@ -86,6 +86,7 @@ from bulk_email.models import Optout, CourseAuthorization
 import shoppingcart
 from openedx.core.djangoapps.user_api.models import UserPreference
 from lang_pref import LANGUAGE_KEY
+from notification_prefs.views import enable_notifications
 
 import track.views
 
@@ -1589,6 +1590,12 @@ def create_account(request, post_override=None):  # pylint: disable-msg=too-many
 
     (user, profile, registration) = ret
 
+    if settings.FEATURES.get('ENABLE_DISCUSSION_EMAIL_DIGEST'):
+        try:
+            enable_notifications(user)
+        except Exception:
+            log.exception("Enable discussion notifications failed for user {id}.".format(id=user.id))
+
     dog_stats_api.increment("common.student.account_created")
 
     email = post_vars['email']

lms/djangoapps/notification_prefs/views.py

@@ -90,6 +90,31 @@ class UsernameCipher(object):
         return UsernameCipher._remove_padding(decrypted)
 
 
+def enable_notifications(user):
+    """
+    Enable notifications for a user.
+    Currently only used for daily forum digests.
+    """
+    UserPreference.objects.get_or_create(
+        user=user,
+        key=NOTIFICATION_PREF_KEY,
+        defaults={
+            "value": UsernameCipher.encrypt(user.username)
+        }
+    )
+
+
+def disable_notifications(user):
+    """
+    Disable notifications for a user.
+    Currently only used for daily forum digests.
+    """
+    UserPreference.objects.filter(
+        user=user,
+        key=NOTIFICATION_PREF_KEY
+    ).delete()
+
+
 @require_POST
 def ajax_enable(request):
     """
@@ -103,13 +128,7 @@ def ajax_enable(request):
     if not request.user.is_authenticated():
         raise PermissionDenied
 
-    UserPreference.objects.get_or_create(
-        user=request.user,
-        key=NOTIFICATION_PREF_KEY,
-        defaults={
-            "value": UsernameCipher.encrypt(request.user.username)
-        }
-    )
+    enable_notifications(request.user)
 
     return HttpResponse(status=204)
 
@@ -125,10 +144,7 @@ def ajax_disable(request):
     if not request.user.is_authenticated():
         raise PermissionDenied
 
-    UserPreference.objects.filter(
-        user=request.user,
-        key=NOTIFICATION_PREF_KEY
-    ).delete()
+    disable_notifications(request.user)
 
     return HttpResponse(status=204)
 

lms/envs/common.py

@@ -103,6 +103,13 @@ FEATURES = {
     # this should remain off in production until digest notifications are online.
     'ENABLE_DISCUSSION_HOME_PANEL': False,
 
+    # Set this to True if you want the discussion digest emails enabled automatically for new users.
+    # This will be set on all new account registrations.
+    # It is not recommended to enable this feature if ENABLE_DISCUSSION_HOME_PANEL is not enabled, since
+    # subscribers who receive digests in that case will only be able to unsubscribe via links embedded
+    # in their emails, and they will have no way to resubscribe.
+    'ENABLE_DISCUSSION_EMAIL_DIGEST': False,
+
     'ENABLE_PSYCHOMETRICS': False,  # real-time psychometrics (eg item response theory analysis in instructor dashboard)
 
     'ENABLE_DJANGO_ADMIN_SITE': True,  # set true to enable django's admin site, even on prod (e.g. for course ops)