show who merged request

app/models/merge_request.rb

@@ -68,6 +68,10 @@ class MergeRequest < ActiveRecord::Base
     commits.first
   end
 
+  def merge_event
+    self.project.events.where(:target_id => self.id, :target_type => "MergeRequest", :action => Event::Merged).last
+  end
+
   # Return the number of +1 comments (upvotes)
   def upvotes
     notes.select(&:upvote?).size

app/models/project.rb

@@ -99,7 +99,8 @@ class Project < ActiveRecord::Base
         Event.create(
           :project => self,
           :action => Event::Merged,
-          :data => {:merge_request_id => merge_request.id},
+          :target_id => merge_request.id,
+          :target_type => "MergeRequest",
           :author_id => user.id
         )
       end

app/views/merge_requests/show.html.haml

@@ -28,6 +28,16 @@
 %hr
 - if @merge_request.closed
   .alert-message.error Closed
+  - if @merge_request.merged
+    - event = @merge_request.merge_event
+    %div
+      %p
+        %strong #{event.author_name} 
+        merged this request
+        %span.cgray
+          = time_ago_in_words(event.created_at)
+          ago.
+    %br
 - else 
   .alert-message.success 
     = link_to "#", :class => "info_link", :title => "How To Merge" do