################customer_controller.rb

def create
    @customer = Customer.new(params[:customer])

    respond_to do |format|
      if @customer.save

        #flash[:notice] = 'Customer was successfully created.'
        #format.html { redirect_to(@customer, :action => 'new') }
       format.html {redirect_to(:add_to_cart)}

       # format.xml  { render :xml => @customer, :status => :created, :location => @customer }

      else
        format.html { render :action => "new" }
        format.xml  { render :xml => @customer.errors, :status => :unprocessable_entity }
      end

    end
  end

  def add_to_cart

   productdisplay = Product.find(params[:id])

    @productdisplay = Product.find(:first, :conditions => ['id > ? AND product_active = ?', params[:id], "yes"])

  end


##########add_to_cart.html.erb
<%= link_to "next", add_to_cart_url %>



#########routes.rb
  map.add_to_cart 'add_to_cart', :controller => 'customers', :action => 'add_to_cart'