Add methods to get a bug's author details from the first comment

app/models/map_bug.rb

@@ -46,4 +46,20 @@ class MapBug < ActiveRecord::Base
   def visible
     return status != "hidden"
   end
+
+  def author
+    self.comments.first.author
+  end
+
+  def author_ip
+    self.comments.first.author_ip
+  end
+
+  def author_id
+    self.comments.first.author_id
+  end
+
+  def author_name
+    self.comments.first.author_name
+  end
 end

app/models/map_bug_comment.rb

@@ -1,8 +1,8 @@
 class MapBugComment < ActiveRecord::Base
   set_table_name 'map_bug_comment'
 
-  belongs_to :map_bug, :foreign_key => 'bug_id'
-  belongs_to :user, :foreign_key => 'author_id'
+  belongs_to :map_bug, :foreign_key => :bug_id
+  belongs_to :author, :class_name => "User", :foreign_key => :author_id
 
   validates_inclusion_of :event, :in => [ "opened", "closed", "reopened", "commented", "hidden" ]
   validates_presence_of :id, :on => :update
@@ -13,7 +13,7 @@ class MapBugComment < ActiveRecord::Base
     if self.author_id.nil?
       self.read_attribute(:author_name)
     else
-      self.user.display_name
+      self.author.display_name
     end
   end
 end

app/models/notifier.rb

@@ -97,7 +97,7 @@ class Notifier < ActionMailer::Base
 
   def bug_comment_notification(bug_comment, recipient)
     common_headers recipient
-    owner = (recipient == bug_comment.map_bug.comments.first.user);
+    owner = (recipient == bug_comment.map_bug.author);
     subject I18n.t('notifier.map_bug_plain.subject_own', :commenter => bug_comment.author_name) if owner
     subject I18n.t('notifier.map_bug_plain.subject_other', :commenter => bug_comment.author_name) unless owner