install two_factor_authentication in dummy app User

spec/dummy/app/models/user.rb

@@ -1,8 +1,9 @@
 class User < ActiveRecord::Base
   # Include default devise modules. Others available are:
   # :confirmable, :lockable, :timeoutable and :omniauthable
-  devise :database_authenticatable, :registerable,
+  devise :two_factor_authenticatable, :database_authenticatable, :registerable,
-         :recoverable, :rememberable, :trackable, :validatable
+         :recoverable, :rememberable, :trackable, :validatable,
+         :two_factor_authenticatable
 
   # Setup accessible (or protected) attributes for your model
   attr_accessible :email, :password, :password_confirmation, :remember_me

spec/dummy/db/migrate/20140407172619_two_factor_authentication_add_to_users.rb

@@ -0,0 +1,15 @@
+class TwoFactorAuthenticationAddToUsers < ActiveRecord::Migration
+  def up
+    change_table :users do |t|
+      t.string   :otp_secret_key
+      t.integer  :second_factor_attempts_count, :default => 0
+    end
+
+    add_index :users, :otp_secret_key, :unique => true
+  end
+
+  def down
+    remove_column :users, :otp_secret_key
+    remove_column :users, :second_factor_attempts_count
+  end
+end

spec/dummy/db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20140403184646) do
+ActiveRecord::Schema.define(:version => 20140407172619) do
 
   create_table "users", :force => true do |t|
     t.string   "email",                        :default => "", :null => false
@@ -26,9 +26,12 @@ ActiveRecord::Schema.define(:version => 20140403184646) do
     t.string   "last_sign_in_ip"
     t.datetime "created_at",                                   :null => false
     t.datetime "updated_at",                                   :null => false
+    t.string   "otp_secret_key"
+    t.integer  "second_factor_attempts_count", :default => 0
   end
 
   add_index "users", ["email"], :name => "index_users_on_email", :unique => true
+  add_index "users", ["otp_secret_key"], :name => "index_users_on_otp_secret_key", :unique => true
   add_index "users", ["reset_password_token"], :name => "index_users_on_reset_password_token", :unique => true
 
 end