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

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)