This is my user model:

class User < ActiveRecord::Base
  has_one :profile
  has_many :games
  has_one :wishlist

  attr_accessor :password
  before_save :encrypt_password

  validates_presence_of :username
  validates_length_of :username, :within => 6..20, :message => "must 
contain between 6 to 20 characters"
  validates_uniqueness_of :username
  validates_presence_of :email
  validates_uniqueness_of :email
  validates_format_of :email, :with => 
/\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\Z/i, :on => :create
  validates_confirmation_of :password
  validates_length_of :password, :within => 8..20, :message => "must 
contain between 8 to 20 characters"
  validates_presence_of :password, :on => :create
  validates_presence_of :password_confirmation

  before_create :assign_wishlist

private
  def assign_wishlist
    self.wishlist = Wishlist.create
  end

    def encrypt_password
    if password.present?
      self.password_salt = BCrypt::Engine.generate_salt
      self.password_hash = BCrypt::Engine.hash_secret(password, 
password_salt)
    end
  end

  def self.authenticate(email, password)
    user = find_by_email(email)
    if user && user.password_hash == 
BCrypt::Engine.hash_secret(password, user.password_salt)
      user
    else
      nil
    end
  end
end


and the following is my wishlist model:

class Wishlist < ActiveRecord::Base
  belongs_to :user
  validates_presence_of :number_1
  validates_presence_of :number_2
  validates_presence_of :number_3
  validates_presence_of :number_4
  validates_presence_of :number_5

end

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