#rails 2.02
# problem is that after setting error message in the listing class... it doesnt show up in the flash in the controller method flash[:error]

class Desire < ActiveRecord::Base

  attr_accessor :error_message
  has_many :listings

  def after_create
    Listing.create(:desire_id => self.id)
  end

end

class Listing < ActiveRecord::Base

  def after_create
    self.desire.error_message = "foo"
  end
end

class DesiresController < ApplicationController
   def create
    @desire = Desire.new(params[:desire])
    @desire.user_id = current_user.id
    if @desire.save
#      current_user.desires << @desire
      debugger
      flash[:notice] = 'Desire was successfully created.'
      flash[:error] = @desire.error_message
      redirect_to :action => 'index'
    else
      render :action => 'new'
    end
  end