Enable confirmable and reconfirmable modules for User

app/models/user.rb

@@ -43,7 +43,7 @@ require 'file_size_validator'
 
 class User < ActiveRecord::Base
   devise :database_authenticatable, :token_authenticatable, :lockable, :async,
-         :recoverable, :rememberable, :trackable, :validatable, :omniauthable, :registerable
+         :recoverable, :rememberable, :trackable, :validatable, :omniauthable, :confirmable, :registerable
 
   attr_accessible :email, :password, :password_confirmation, :remember_me, :bio, :name, :username,
                   :skype, :linkedin, :twitter, :color_scheme_id, :theme_id, :force_random_password,
@@ -398,4 +398,4 @@ class User < ActiveRecord::Base
 
     self
   end
-end
\ No newline at end of file
+end

config/initializers/devise.rb

@@ -54,6 +54,8 @@ Devise.setup do |config|
   # The realm used in Http Basic Authentication. "Application" by default.
   # config.http_authentication_realm = "Application"
 
+  config.reconfirmable = true
+
   # It will change confirmation, password recovery and other workflows
   # to behave the same regardless if the e-mail provided was right or wrong.
   # Does not affect registerable.

db/migrate/20131009115346_add_confirmable_to_users.rb

+class AddConfirmableToUsers < ActiveRecord::Migration
+  def self.up
+    add_column :users, :confirmation_token, :string
+    add_column :users, :confirmed_at, :datetime
+    add_column :users, :confirmation_sent_at, :datetime
+    add_column :users, :unconfirmed_email, :string
+    add_index :users, :confirmation_token, unique: true
+    User.update_all(confirmed_at: Time.now)
+  end
+
+  def self.down
+    remove_column :users, :confirmation_token, :confirmed_at, :confirmation_sent_at
+    remove_column :users, :unconfirmed_email
+  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 => 20131005191208) do
+ActiveRecord::Schema.define(:version => 20131009115346) do
 
   create_table "deploy_keys_projects", :force => true do |t|
     t.integer  "deploy_key_id", :null => false
@@ -284,10 +284,15 @@ ActiveRecord::Schema.define(:version => 20131005191208) do
     t.datetime "password_expires_at"
     t.integer  "created_by_id"
     t.string   "avatar"
+    t.string   "confirmation_token"
+    t.datetime "confirmed_at"
+    t.datetime "confirmation_sent_at"
+    t.string   "unconfirmed_email"
   end
 
   add_index "users", ["admin"], :name => "index_users_on_admin"
   add_index "users", ["authentication_token"], :name => "index_users_on_authentication_token", :unique => true
+  add_index "users", ["confirmation_token"], :name => "index_users_on_confirmation_token", :unique => true
   add_index "users", ["email"], :name => "index_users_on_email", :unique => true
   add_index "users", ["extern_uid", "provider"], :name => "index_users_on_extern_uid_and_provider", :unique => true
   add_index "users", ["name"], :name => "index_users_on_name"