Photo association on GUID 1/2: Migration

db/migrate/20110527135552_photo_status_message_association_on_guid.rb

@@ -0,0 +1,38 @@
+class PhotoStatusMessageAssociationOnGuid < ActiveRecord::Migration
+  class Post < ActiveRecord::Base
+    attr_accessible :id, :guid, :status_message_id, :status_message_guid
+    self.inheritance_column = :_type_disabled
+  end
+  
+  def self.up
+    add_column :posts, :status_message_guid, :string
+    
+    photos = Post.where(Post.arel_table[:status_message_id].not_eq(nil).and(Post.arel_table[:type].eq('Photo')))
+    photos.each do |photo|
+      status_message = Post.find(photo.status_message_id)
+      photo.update_attributes(:status_message_guid => status_message.guid)
+    end
+    
+    remove_index :posts, [:status_message_id, :pending]
+    add_index :posts, :status_message_guid
+    add_index :posts, [:status_message_guid, :pending]
+    
+    remove_column :posts, :status_message_id
+  end
+
+  def self.down
+    add_column :posts, :status_message_id, :integer
+    
+    photos = Post.where(Post.arel_table[:status_message_guid].not_eq(nil).and(Post.arel_table[:type].eq('Photo')))
+    photos.each do |photo|
+      status_message = Post.where(:guid => photo.status_message_guid).first
+      photo.update_attributes(:status_message_id => status_message.id)
+    end
+    
+    remove_index :posts, [:status_message_guid, :pending]
+    add_index :posts, :status_message_id
+    add_index :posts, [:status_message_id, :pending]
+    
+    remove_column :posts, :status_message_guid
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20110524184202) do
+ActiveRecord::Schema.define(:version => 20110527135552) do
 
   create_table "aspect_memberships", :force => true do |t|
     t.integer  "aspect_id",  :null => false
@@ -232,7 +232,6 @@ ActiveRecord::Schema.define(:version => 20110524184202) do
     t.boolean  "pending",                             :default => false, :null => false
     t.string   "type",                  :limit => 40,                    :null => false
     t.text     "text"
-    t.integer  "status_message_id"
     t.text     "remote_photo_path"
     t.string   "remote_photo_name"
     t.string   "random_string"
@@ -249,13 +248,14 @@ ActiveRecord::Schema.define(:version => 20110524184202) do
     t.string   "provider_display_name"
     t.string   "actor_url"
     t.integer  "objectId"
+    t.string   "status_message_guid"
   end
 
   add_index "posts", ["author_id"], :name => "index_posts_on_person_id"
   add_index "posts", ["guid"], :name => "index_posts_on_guid", :unique => true
   add_index "posts", ["mongo_id"], :name => "index_posts_on_mongo_id"
-  add_index "posts", ["status_message_id", "pending"], :name => "index_posts_on_status_message_id_and_pending"
-  add_index "posts", ["status_message_id"], :name => "index_posts_on_status_message_id"
+  add_index "posts", ["status_message_guid", "pending"], :name => "index_posts_on_status_message_guid_and_pending"
+  add_index "posts", ["status_message_guid"], :name => "index_posts_on_status_message_guid"
   add_index "posts", ["type", "pending", "id"], :name => "index_posts_on_type_and_pending_and_id"
 
   create_table "profiles", :force => true do |t|