fixes #925

app/assets/stylesheets/specific/comments.css.scss

@@ -5,6 +5,11 @@ div.comments-for-post {
     margin: 1em 0;
   }
   
+  .info {
+    color: #AAA;
+    font-style: italic;
+  }
+
   div.list-of-comments {
     article.comment {
       margin-bottom: 2em;

app/models/comment.rb

@@ -5,6 +5,7 @@ class Comment < ActiveRecord::Base
   belongs_to :creator, :class_name => "User"
   has_many :votes, :class_name => "CommentVote", :dependent => :destroy
   before_validation :initialize_creator, :on => :create
+  before_validation :initialize_updater
   after_save :update_last_commented_at
   after_destroy :update_last_commented_at
   attr_accessible :body, :post_id, :do_not_bump_post
@@ -70,10 +71,19 @@ class Comment < ActiveRecord::Base
     self.ip_addr = CurrentUser.ip_addr
   end
 
+  def initialize_updater
+    self.updater_id = CurrentUser.user.id
+    self.updater_ip_addr = CurrentUser.ip_addr
+  end
+
   def creator_name
     User.id_to_name(creator_id)
   end
   
+  def updater_name
+    User.id_to_name(updater_id)
+  end
+
   def validate_creator_is_not_limited
     if creator.can_comment?
       true
@@ -111,7 +121,7 @@ class Comment < ActiveRecord::Base
   end
   
   def editable_by?(user)
-    creator_id == user.id || user.is_moderator?
+    creator_id == user.id || user.is_janitor?
   end
 end
 

app/views/comments/partials/show/_comment.html.erb

@@ -8,6 +8,10 @@
   <div class="content">
     <div class="body prose">
       <%= format_text(comment.body) %>
+      
+      <% if comment.updater_id.present? && (comment.updater_id != comment.creator_id || comment.created_at != comment.updated_at) %>
+        <p class="info">Updated by <%= link_to comment.updater_name, user_path(comment.updater_id) %> <%= time_ago_in_words_tagged(comment.updated_at) %>.</p>
+      <% end %>
     </div>
     <menu>
       <% if @post || @posts %>

db/migrate/20130318002652_add_updater_info_to_comments.rb

@@ -0,0 +1,6 @@
+class AddUpdaterInfoToComments < ActiveRecord::Migration
+  def change
+    add_column :comments, :updater_id, :integer
+    add_column :comments, :updater_ip_addr, "inet"
+  end
+end

db/structure.sql

@@ -684,7 +684,9 @@ CREATE TABLE comments (
     body_index tsvector NOT NULL,
     score integer DEFAULT 0 NOT NULL,
     created_at timestamp without time zone NOT NULL,
-    updated_at timestamp without time zone NOT NULL
+    updated_at timestamp without time zone NOT NULL,
+    updater_id integer,
+    updater_ip_addr inet
 );
 
 
@@ -6241,3 +6243,5 @@ INSERT INTO schema_migrations (version) VALUES ('20130305005138');
 INSERT INTO schema_migrations (version) VALUES ('20130307225324');
 
 INSERT INTO schema_migrations (version) VALUES ('20130308204213');
+
+INSERT INTO schema_migrations (version) VALUES ('20130318002652');

script/fixes/007.rb

@@ -0,0 +1,6 @@
+#!/usr/bin/env ruby
+
+require File.expand_path(File.join(File.dirname(__FILE__), '..', '..', 'config', 'environment'))
+
+ActiveRecord::Base.connection.execute("set statement_timeout = 0")
+ActiveRecord::Base.connection.execute("update comments set updater_id = creator_id")