gistfile1.rb

class Meeting < ActiveRecord::Base
  attr_accessible :title, :start, :start_date, :start_time, :duration, :external_id, :description
  belongs_to :user
  validates_presence_of :title
  validates_numericality_of :duration, :greater_than_or_equal_to => 1
  before_save :calculate_end_time
  
  def generate_external_id
    record = Object.new 
    while record
      random = Array.new(6){rand 10}.join
      record = Meeting.find(:first, :conditions => ["external_id = ?", random]) 
    end 
    return random 
  end
  
  def start_date
    @date = Date.new(self.start.year.to_i,self.start.month.to_i,self.start.day.to_i)
  end
  
  def start_time
    @time = Time.at(self.start.time)
  end
  
  private
  
  def calculate_end_time
    self.end = self.start.advance(:hours => self.duration)
  end
end

class User < ActiveRecord::Base
  attr_accessible :username, :email, :password, :password_confirmation, :company, :time_zone, :is_admin, :telecon_code
  acts_as_authentic do |c|
    c.login_field = :email
  end
  has_many :meetings, :order => "start ASC"
  validates_presence_of :username, :time_zone, :email
  validates_uniqueness_of :email
end