Modelagem de ontem

gistfile1.rb

class Participant < ActiveRecord::Base  
  has_many :points, :class => 'ParticipantPoints'
end

class ParticipantPoints < ActiveRecord::Base
  
  attr_accessor :credit_debit
  after_initialize :set_amount
  after_create :update_current_points
  
  def set_amount
    self.amount = self.amount * -1 if @credit_debit == 1
  end
  
  def update_current_points
    self.participant.update_attribute(:current_points, self.participant.current_points + self.amount)
  end
  
end

class ParticipantController < ApplicationController
  
  # POST /participants/:id/update_points.json
  def update_points
    @participant.points.build(params[:points].merge(:manager => @current_manager))
  end
  
end

# _update_points.erb.html
<%= form_for @participant, @point do |f| %>
  <%= f.text_field :amount %>
  <%= f.radio_button :credit_debit, :value => 0 %> Credit
  <%= f.radio_button :credit_debit, :value => 1 %> Debit
  <%= f.text_area :description %>
<% end %>

@participant.current_points



# RootController
class RootController < ActionController
  
  def index
    domain = request.host
    campaing = Campaing.actives.where(:custom_domain => domain).first
    if campaing
      redirect_to("/#{campaing.slug}")
    else
      render :invalid_campaign
    end
  end
  
end