Authlogic to Devise Migration (rails3.1)

gistfile1.rb

class AuthlogicToDevise < ActiveRecord::Migration
  def up
    ## Database authenticatable
    rename_column :users, :crypted_password, :encrypted_password

    ## Recoverable
    add_column :users, :reset_password_token, :string, :limit => 255
    add_column :users, :reset_password_sent_at, :datetime

    ## Rememberable
    add_column :users, :remember_created_at, :datetime

    ## Trackable
    rename_column :users, :login_count, :sign_in_count
    rename_column :users, :current_login_at, :current_sign_in_at
    rename_column :users, :last_login_at, :last_sign_in_at
    rename_column :users, :current_login_ip, :current_sign_in_ip
    rename_column :users, :last_login_ip, :last_sign_in_ip

    ## Encryptable

    ## Confirmable
    add_column :users, :confirmation_token, :string, :limit => 255
    add_column :users, :confirmed_at, :datetime
    add_column :users, :confirmation_sent_at, :datetime
    execute "UPDATE users SET confirmed_at = created_at, confirmation_sent_at = created_at"
    # not using reconfirmable

    ## Lockable
    rename_column :users, :failed_login_count, :failed_attempts
    add_column :users, :unlock_token, :string, :limit => 255
    add_column :users, :locked_at, :datetime

    ## Token authenticatable
    add_column :users, :authentication_token, :string, :limit => 255

    ## cleaning remaining Authlogic stuff
    remove_column :users, :persistence_token
    remove_column :users, :perishable_token
    remove_column :users, :single_access_token

    ## Indexes
    add_index :users, :reset_password_token, :unique => true
    add_index :users, :confirmation_token,   :unique => true
    add_index :users, :unlock_token,         :unique => true
    add_index :users, :authentication_token, :unique => true
  end

  def down
    ## Database authenticatable
    rename_column :users, :encrypted_password, :crypted_password

    ## Recoverable
    remove_column :users, :reset_password_token
    remove_column :users, :reset_password_sent_at

    ## Rememberable
    remove_column :users, :remember_created_at

    ## Trackable
    rename_column :users, :sign_in_count, :login_count
    rename_column :users, :current_sign_in_at, :current_login_at
    rename_column :users, :last_sign_in_at, :last_login_at
    rename_column :users, :current_sign_in_ip, :current_login_ip
    rename_column :users, :last_sign_in_ip, :last_login_ip

    ## Encryptable

    ## Confirmable
    remove_column :users, :confirmation_token
    remove_column :users, :confirmed_at
    remove_column :users, :confirmation_sent_at
    # not using reconfirmable

    ## Lockable
    rename_column :users, :failed_attempts, :failed_login_count
    remove_column :users, :unlock_token
    remove_column :users, :locked_at

    ## Token authenticatable
    remove_column :users, :authentication_token

    ## cleaning remaining Authlogic stuff
    add_column :users, :perishable_token, :string, :limit => 255
    add_column :users, :single_access_token, :string, :limit => 255
    add_column :users, :persistence_token, :string, :limit => 255

    ## Indexes
    remove_index :users, :reset_password_token
    remove_index :users, :confirmation_token
    remove_index :users, :unlock_token
    remove_index :users, :authentication_token
  end
end