Add option to be notified when a followed user posts (#13546)

* Add bell button

Fix #4890

* Remove duplicate type from post-deployment migration

* Fix legacy class type mappings

* Improve query performance with better index

* Fix validation

* Remove redundant index from notifications

2 files changed, 10 insertions, 4 deletions

diff --git a/app/serializers/rest/notification_serializer.rb b/app/serializers/rest/notification_serializer.rb
index 80812ad0d..27b031fcc 100644
--- a/app/serializers/rest/notification_serializer.rb
+++ b/app/serializers/rest/notification_serializer.rb
@@ -11,6 +11,6 @@ class REST::NotificationSerializer < ActiveModel::Serializer
   end
 
   def status_type?
-    [:favourite, :reblog, :mention, :poll].include?(object.type)
+    [:favourite, :reblog, :status, :mention, :poll].include?(object.type)
   end
 end
diff --git a/app/serializers/rest/relationship_serializer.rb b/app/serializers/rest/relationship_serializer.rb
index c2f3c9a11..afd4cddf9 100644
--- a/app/serializers/rest/relationship_serializer.rb
+++ b/app/serializers/rest/relationship_serializer.rb
@@ -1,9 +1,9 @@
 # frozen_string_literal: true
 
 class REST::RelationshipSerializer < ActiveModel::Serializer
-  attributes :id, :following, :showing_reblogs, :followed_by, :blocking, :blocked_by,
-             :muting, :muting_notifications, :requested, :domain_blocking,
-             :endorsed, :note
+  attributes :id, :following, :showing_reblogs, :notifying, :followed_by,
+             :blocking, :blocked_by, :muting, :muting_notifications, :requested,
+             :domain_blocking, :endorsed, :note
 
   def id
     object.id.to_s
@@ -19,6 +19,12 @@ class REST::RelationshipSerializer < ActiveModel::Serializer
       false
   end
 
+  def notifying
+    (instance_options[:relationships].following[object.id] || {})[:notify] ||
+      (instance_options[:relationships].requested[object.id] || {})[:notify] ||
+      false
+  end
+
   def followed_by
     instance_options[:relationships].followed_by[object.id] || false
   end