migration for old invitation-emails

db/migrate/20120328025842_remove_invitation_email_from_users.rb

+class RemoveInvitationEmailFromUsers < ActiveRecord::Migration
+  def self.up
+    execute <<-SQL
+      UPDATE users
+      SET email = concat('invitemail_', id, '@example.org')
+      WHERE invitation_token IS NOT NULL
+    SQL
+  end
+
+  def self.down
+    execute <<-SQL
+      UPDATE users
+      SET email = (SELECT identifier FROM invitations WHERE invitations.recipient_id = users.id)
+      WHERE invitation_token IS NOT NULL
+    SQL
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20120322223517) do
+ActiveRecord::Schema.define(:version => 20120328025842) do
 
   create_table "account_deletions", :force => true do |t|
     t.string  "diaspora_handle"