gistfile1.rb

class User < ActiveRecord::Base
  # Include default devise modules. Others available are:
  # :token_authenticatable, :confirmable,
  # :lockable, :timeoutable and :omniauthable
  devise :database_authenticatable, :recoverable, :rememberable, :trackable
    # :registerable, :validatable

  # Setup accessible (or protected) attributes for your model
  attr_accessible :first_name, :last_name, :country, :city, :address, :phone, :email, :password, :password_confirmation, :remember_me
  # attr_accessible :title, :body

  has_many :users_roles
  has_many :roles, :through => :users_roles

  def as_json(options = nil)
    res = {}
    [:first_name, :last_name, :country, :city, :address, :phone, :email, :last_sign_in_at].each do |el, index|
      res[el] = self[el]
    end
    res
  end
end