puts 'enter'
names = []
i =0
while names[i-1] != 'end'
   names.push gets.chomp
   i = i+1
end
 i=i-1
names.each do |count|
 if i != 0
   puts count
 end
 i=i-1
end 

select :parent_id, Parent.find(:all).collect{|p| [p.full_name, p.id]}, {:include_blank => true}

class Book < ActiveRecord::Base
  has_many :pages
end

class Pages < ActiveRecord::Base
  belongs_to :book
  
  validates_presence_of :page_id # this is not enough, anything can go in this field

  # we check if the parent object is valid or not
  validate do |page|
   if page.blank?
     unless page.book(true)
       errors.add(:page_id, "must be a valid Book id")
     end
   end
  end

end

class ApplicationController < ActionController::Base
 
  def hello(name)
   "Hello #{name}"
  end

end

class UsersController < ApplicationController

  before_filter :only => :index do |u| 
    u.hello('Master')
  end

end