validates :password,  length: { within: Devise.password_length }, confirmation: true, presence: true, if: :password_required?

private

  def password_required?
    social == true
  end

# == Schema Information
#
# Table name: users
#
#  id                     :integer         not null, primary key
#  fullname               :string(255)
#  email                  :string(255)
#  encrypted_password     :string(255)
#  reset_password_token   :string(255)
#  reset_password_sent_at :datetime
#  remember_created_at    :datetime
#  sign_in_count          :integer         default(0)
#  current_sign_in_at     :datetime
#  last_sign_in_at        :datetime
#  current_sign_in_ip     :string(255)
#  last_sign_in_ip        :string(255)
#  username               :string(255)
#  image                  :string(255)
#  city                   :string(255)
#  country                :string(255)
#  subdomain              :string(255)
#  created_at             :datetime        not null
#  updated_at             :datetime        not null
#  admin                  :boolean         default(FALSE)
#  social                 :boolean         default(FALSE)
#