Merge remote-tracking branch 'tootsuite/master' into glitchsoc/master

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

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