BUGFIX/FEATURE: store topic changes in post revisions

History + edit notifications for title and category changes

app/serializers/post_revision_serializer.rb

@@ -1,5 +1,3 @@
-require_dependency "discourse_diff"
-
 class PostRevisionSerializer < ApplicationSerializer
   attributes :post_id,
              :version,
@@ -9,9 +7,17 @@ class PostRevisionSerializer < ApplicationSerializer
              :avatar_template,
              :created_at,
              :edit_reason,
-             :inline,
-             :side_by_side,
-             :side_by_side_markdown
+             :body_changes,
+             :title_changes,
+             :category_changes
+
+  def include_title_changes?
+    object.has_topic_data?
+  end
+
+  def include_category_changes?
+    object.has_topic_data?
+  end
 
   def version
     object.number
@@ -22,50 +28,24 @@ class PostRevisionSerializer < ApplicationSerializer
   end
 
   def username
-    object.user.username_lower
+    user.username_lower
   end
 
   def display_username
-    object.user.username
+    user.username
   end
 
   def avatar_template
-    object.user.avatar_template
+    user.avatar_template
   end
 
   def edit_reason
-    return unless object.modifications["edit_reason"].present?
-    object.modifications["edit_reason"][1]
+    object.lookup("edit_reason",1)
   end
 
-  def inline
-    DiscourseDiff.new(previous_cooked, cooked).inline_html
-  end
-
-  def side_by_side
-    DiscourseDiff.new(previous_cooked, cooked).side_by_side_html
-  end
-
-  def side_by_side_markdown
-    DiscourseDiff.new(previous_raw, raw).side_by_side_markdown
-  end
-
-  private
-
-  def previous_cooked
-    @previous_cooked ||= object.modifications["cooked"][0]
-  end
-
-  def previous_raw
-    @previous_raw ||= object.modifications["raw"][0]
-  end
-
-  def cooked
-    @cooked ||= object.modifications["cooked"][1]
-  end
-
-  def raw
-    @raw ||= object.modifications["raw"][1]
+  def user
+    # if stuff goes pear shape attribute to system
+    object.user || Discourse.system_user
   end
 
 end