Show who deleted a topic

app/assets/javascripts/discourse/models/post.js

@@ -17,6 +17,20 @@ Discourse.Post = Discourse.Model.extend({
   new_user: Em.computed.equal('trust_level', 0),
   firstPost: Em.computed.equal('post_number', 1),
 
+  // Posts can show up as deleted if the topic is deleted
+  deletedViaTopic: Em.computed.and('firstPost', 'topic.deleted_at'),
+  deleted: Em.computed.or('deleted_at', 'deletedViaTopic'),
+
+  postDeletedBy: function() {
+    if (this.get('firstPost')) { return this.get('topic.deleted_by') }
+    return this.get('deleted_by');
+  }.property('firstPost', 'deleted_by', 'topic.deleted_by'),
+
+  postDeletedAt: function() {
+    if (this.get('firstPost')) { return this.get('topic.deleted_at') }
+    return this.get('deleted_at');
+  }.property('firstPost', 'deleted_at', 'topic.deleted_at'),
+
   url: function() {
     return Discourse.Utilities.postUrl(this.get('topic.slug') || this.get('topic_slug'), this.get('topic_id'), this.get('post_number'));
   }.property('post_number', 'topic_id', 'topic.slug'),
@@ -173,6 +187,7 @@ Discourse.Post = Discourse.Model.extend({
     }
   },
 
+
   /**
     Recover a deleted post
 

app/assets/javascripts/discourse/templates/post.js.handlebars

@@ -56,9 +56,9 @@
       {{view Discourse.RepliesView contentBinding="replies" postViewBinding="view"}}
       {{view Discourse.ActionsHistoryView contentBinding="actionsHistory"}}
 
-      {{#if deleted_by}}
+      {{#if deleted}}
         <div class='post-actions'>
-          {{i18n post.deleted_by}} {{avatar deleted_by imageSize="tiny"}} {{unboundAge deleted_at}}
+          {{i18n post.deleted_by}} {{avatar postDeletedBy imageSize="tiny"}} {{unboundAge postDeletedAt}}
         </div>
       {{/if}}
 

app/assets/javascripts/discourse/views/post_view.js

@@ -12,7 +12,7 @@ Discourse.PostView = Discourse.View.extend({
   classNameBindings: ['postTypeClass',
                       'selected',
                       'post.hidden:hidden',
-                      'deleted',
+                      'post.deleted',
                       'parentPost:replies-above'],
   postBinding: 'content',
 
@@ -39,8 +39,6 @@ Discourse.PostView = Discourse.View.extend({
     }
   },
 
-  deletedViaTopic: Em.computed.and('post.firstPost', 'post.topic.deleted_at'),
-  deleted: Em.computed.or('post.deleted_at', 'deletedViaTopic'),
 
   selected: function() {
     var selectedPosts = this.get('controller.selectedPosts');

app/serializers/topic_view_serializer.rb

@@ -31,7 +31,8 @@ class TopicViewSerializer < ApplicationSerializer
              :pinned,
              :details,
              :highest_post_number,
-             :last_read_post_number
+             :last_read_post_number,
+             :deleted_by
 
   # Define a delegator for each attribute of the topic we want
   attributes *topic_attributes
@@ -108,6 +109,10 @@ class TopicViewSerializer < ApplicationSerializer
     object.draft_sequence
   end
 
+  def deleted_by
+    BasicUserSerializer.new(object.topic.deleted_by, root: false).as_json
+  end
+
   # Topic user stuff
   def has_topic_user?
     object.topic_user.present?