gistfile1.txt

Started DELETE "/users/rurounijones" for 127.0.0.1 at 2012-05-03 05:44:43 +0900
Processing by UsersController#destroy as HTML
  Parameters: {"authenticity_token"=>"FTFV0iNtTJSvhdp1I5q++p2SDQxgcbEkItXL242YCbI=", "id"=>"rurounijones"}
  User Load (0.2ms) SELECT "users".* FROM "users" WHERE "users"."nickname" = 'rurounijones' LIMIT 1
  CACHE (0.0ms) SELECT "users".* FROM "users" WHERE "users"."nickname" = 'rurounijones' LIMIT 1
   (0.1ms) BEGIN
   (0.1ms) ROLLBACK

-----------------------------------------------

pg gem, Postgresql

migration

class CreateUsers < ActiveRecord::Migration
  def change
    create_table :users do |t|
      t.string :provider
      t.string :uid
      t.string :name
      t.string :nickname
      t.string :email
      t.timestamps
    end

    add_index :users, [ :provider, :uid ], :unique => true
    add_index :users, :nickname, :unique => true

  end
end

user.rb

class User < ActiveRecord::Base
end