1 files changed, 20 insertions, 5 deletions
diff --git a/activerecord/test/models/comment.rb b/activerecord/test/models/comment.rb
index 4b2015fe01..b38b17e90e 100644
--- a/activerecord/test/models/comment.rb
+++ b/activerecord/test/models/comment.rb
@@ -7,6 +7,10 @@ class Comment < ActiveRecord::Base
   scope :created, -> { all }
 
   belongs_to :post, :counter_cache => true
+  belongs_to :author,   polymorphic: true
+  belongs_to :resource, polymorphic: true
+  belongs_to :developer
+
   has_many :ratings
 
   belongs_to :first_post, :foreign_key => :post_id
@@ -26,19 +30,30 @@ class Comment < ActiveRecord::Base
     all
   end
   scope :all_as_scope, -> { all }
+
+  def to_s
+    body
+  end
 end
 
 class SpecialComment < Comment
-  def self.what_are_you
-    'a special comment...'
-  end
 end
 
 class SubSpecialComment < SpecialComment
 end
 
 class VerySpecialComment < Comment
-  def self.what_are_you
-    'a very special comment...'
+end
+
+class CommentThatAutomaticallyAltersPostBody < Comment
+  belongs_to :post, class_name: "PostThatLoadsCommentsInAnAfterSaveHook", foreign_key: :post_id
+
+  after_save do |comment|
+    comment.post.update_attributes(body: "Automatically altered")
   end
 end
+
+class CommentWithDefaultScopeReferencesAssociation < Comment
+  default_scope ->{ includes(:developer).order('developers.name').references(:developer) }
+  belongs_to :developer
+end