Problem doing <%= @current_user.airline.name %> in view.

airline.rb

class Airline < ActiveModel::Base

  has_one :user, :foreign_key => "uid"

  set_table_name "airline"
  set_primary_key "alid"

  attr_protected :alid

  validates :name, :presence => true, :lenght => { :maximum => 64 }
  validates :name_chg, :numericality => { :only_integer => true }
  validates :uid, :numericality => { :only_integer => true }

end

user.rb

class User < ActiveRecord::Base

  belongs_to :airline

  set_table_name "user"
  set_primary_key "uid"

  attr_protected :psw

  before_save :encrypt_password


  validates :person, :length => { :maximum => 64 }
  validates :sex, :presence => true, :inclusion => { :in => %w(M F) }
  validates :age, :presence => true, :numericality => { :only_integer => true }
  validates :psw, :presence => true, :confirmation => true
  validates :psw_confirmation, :presence => true
  validates :confirm, :acceptance => {:accept => "1"}
  validates :email, :presence => true, :uniqueness => true
  validates :status, :inclusion => { :in => %w(registred activated blocked) }
  validates :app_type, :inclusion => { :in => %w(email draugiem facebook) }

  def self.authenticate(email="", password="")
    user = User.find_by_email(email);

    if user && user.match_password(password)
      return user
    else
      return false
    end
  end

  def match_password(login_password="")
    psw ==  BCrypt::Engine.hash_secret(login_password, psw_salt)
  end

  private
  def encrypt_password
    if(psw.present?)
      self.psw_salt = BCrypt::Engine.generate_salt
      self.psw = BCrypt::Engine.hash_secret(psw, psw_salt)
    end
  end

end