3 files changed, 30 insertions, 3 deletions
diff --git a/app/serializers/activitypub/delete_actor_serializer.rb b/app/serializers/activitypub/delete_actor_serializer.rb
new file mode 100644
index 000000000..dfea9db4a
--- /dev/null
+++ b/app/serializers/activitypub/delete_actor_serializer.rb
@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+class ActivityPub::DeleteActorSerializer < ActiveModel::Serializer
+  attributes :id, :type, :actor
+  attribute :virtual_object, key: :object
+
+  def id
+    [ActivityPub::TagManager.instance.uri_for(object), '#delete'].join
+  end
+
+  def type
+    'Delete'
+  end
+
+  def actor
+    ActivityPub::TagManager.instance.uri_for(object)
+  end
+
+  def virtual_object
+    actor
+  end
+end
diff --git a/app/serializers/activitypub/follow_serializer.rb b/app/serializers/activitypub/follow_serializer.rb
index 86c9992fe..eecd64701 100644
--- a/app/serializers/activitypub/follow_serializer.rb
+++ b/app/serializers/activitypub/follow_serializer.rb
@@ -1,11 +1,12 @@
 # frozen_string_literal: true
 
 class ActivityPub::FollowSerializer < ActiveModel::Serializer
-  attributes :id, :type, :actor
+  attributes :type, :actor
+  attribute :id, if: :dereferencable?
   attribute :virtual_object, key: :object
 
   def id
-    [ActivityPub::TagManager.instance.uri_for(object.account), '#follows/', object.id].join
+    ActivityPub::TagManager.instance.uri_for(object)
   end
 
   def type
@@ -19,4 +20,8 @@ class ActivityPub::FollowSerializer < ActiveModel::Serializer
   def virtual_object
     ActivityPub::TagManager.instance.uri_for(object.target_account)
   end
+
+  def dereferencable?
+    object.respond_to?(:object_type)
+  end
 end
diff --git a/app/serializers/rest/instance_serializer.rb b/app/serializers/rest/instance_serializer.rb
index abbacc374..65907dad2 100644
--- a/app/serializers/rest/instance_serializer.rb
+++ b/app/serializers/rest/instance_serializer.rb
@@ -27,7 +27,7 @@ class REST::InstanceSerializer < ActiveModel::Serializer
   end
 
   def thumbnail
-    full_asset_url(instance_presenter.thumbnail.file.url) if instance_presenter.thumbnail
+    instance_presenter.thumbnail ? full_asset_url(instance_presenter.thumbnail.file.url) : full_pack_url('preview.jpg')
   end
 
   def max_toot_chars