app/controllers/spree/flash_sales_controller.rb
class Spree::FlashSalesController < Spree::StoreController
decorates_assigned :flash_sale
respond_to :html
def show
@flash_sale = Spree::FlashSale.find(params[:id])
spree_flash_sales_load_products
@products = (@new_products + @products).uniq
respond_with(@flash_sale)
end
end