use the parent author of the target as sender for relayable retractions

lib/diaspora/federated/retraction.rb

@@ -29,7 +29,8 @@ class Retraction
 
   def defer_dispatch(user, include_target_author=true)
     subscribers = dispatch_subscribers(include_target_author)
-    Workers::DeferredRetraction.perform_async(user.id, data, subscribers.map(&:id), service_opts(user))
+    sender = dispatch_sender(user)
+    Workers::DeferredRetraction.perform_async(sender.id, data, subscribers.map(&:id), service_opts(user))
   end
 
   def perform
@@ -52,6 +53,11 @@ class Retraction
     subscribers
   end
 
+  # @deprecated This is only needed for pre 0.6 pods
+  def dispatch_sender(user)
+    target.try(:sender_for_dispatch) || user
+  end
+
   def service_opts(user)
     return {} unless target.is_a?(StatusMessage)
 

spec/lib/diaspora/federated/retraction_spec.rb

@@ -99,6 +99,18 @@ describe Retraction do
       Retraction.for(comment, local_luke).defer_dispatch(local_luke)
     end
 
+    it "uses the author of the target parent as sender for a comment-retraction if the parent is local" do
+      post = local_luke.post(:status_message, text: "hello", public: true)
+      comment = local_leia.comment!(post, "destroy!")
+      federation_retraction = Diaspora::Federation::Entities.relayable_retraction(comment, local_leia)
+
+      expect(Workers::DeferredRetraction).to receive(:perform_async).with(
+        local_luke.id, federation_retraction.to_h, [remote_raphael.id], {}
+      )
+
+      Retraction.for(comment, local_leia).defer_dispatch(local_leia)
+    end
+
     context "relayable" do
       let(:post) { local_luke.post(:status_message, text: "hello", public: true) }
       let(:comment) { FactoryGirl.create(:comment, post: post, author: remote_raphael) }