enable lockable strategy for users

app/models/user.rb

 class User < ActiveRecord::Base
   include Account
 
-  devise :database_authenticatable, :token_authenticatable,
+  devise :database_authenticatable, :token_authenticatable, :lockable,
          :recoverable, :rememberable, :trackable, :validatable, :omniauthable
 
   attr_accessible :email, :password, :password_confirmation, :remember_me, :bio,
-                  :name, :projects_limit, :skype, :linkedin, :twitter, :dark_scheme, 
+                  :name, :projects_limit, :skype, :linkedin, :twitter, :dark_scheme,
                   :theme_id, :force_random_password
 
   attr_accessor :force_random_password

config/initializers/devise.rb

@@ -115,7 +115,7 @@ Devise.setup do |config|
   # Defines which strategy will be used to lock an account.
   # :failed_attempts = Locks an account after a number of failed attempts to sign in.
   # :none            = No lock strategy. You should handle locking by yourself.
-  # config.lock_strategy = :failed_attempts
+  config.lock_strategy = :failed_attempts
 
   # Defines which key will be used when locking and unlocking an account
   # config.unlock_keys = [ :email ]
@@ -125,14 +125,14 @@ Devise.setup do |config|
   # :time  = Re-enables login after a certain amount of time (see :unlock_in below)
   # :both  = Enables both strategies
   # :none  = No unlock strategy. You should handle unlocking by yourself.
-  # config.unlock_strategy = :both
+  config.unlock_strategy = :time
 
   # Number of authentication tries before locking an account if lock_strategy
   # is failed attempts.
-  # config.maximum_attempts = 20
+  config.maximum_attempts = 10
 
   # Time interval to unlock the account if :time is enabled as unlock_strategy.
-  # config.unlock_in = 1.hour
+  config.unlock_in = 10.minutes
 
   # ==> Configuration for :recoverable
   #

db/migrate/20120706065612_add_lockable_to_users.rb

+class AddLockableToUsers < ActiveRecord::Migration
+  def change
+    add_column :users, :failed_attempts, :integer, :default => 0
+    add_column :users, :locked_at, :datetime
+  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 => 20120627145613) do
+ActiveRecord::Schema.define(:version => 20120706065612) do
 
   create_table "events", :force => true do |t|
     t.string   "target_type"
@@ -169,6 +169,8 @@ ActiveRecord::Schema.define(:version => 20120627145613) do
     t.integer  "theme_id",                              :default => 1,     :null => false
     t.string   "bio"
     t.boolean  "blocked",                               :default => false, :null => false
+    t.integer  "failed_attempts",                       :default => 0
+    t.datetime "locked_at"
   end
 
   add_index "users", ["email"], :name => "index_users_on_email", :unique => true