gistfile1.rb

class Employee < ActiveRecord::Base
  
  validates_presence_of       :first_name, :last_name, :number, :user_id
  validates_numericality_of   :number
  
  belongs_to :user
  
  has_many  :employments
  has_many  :checkouts, :through => :employments
    
  def full_name
    "#{first_name.camelize} #{last_name.camelize}"
  end
    
end