gistfile1.txt

  def check_for_bid_items
    return if user.bids.empty?

    @bids_and_items = user.bids.inject({}) do |hsh, bid|
      items_for_bid = hsh[bid] || []
      items_for_bid += line_items.select{|li| li.product.bids.include?(bid) }
      hsh.update(bid => items_for_bid) unless items_for_bid.empty?
    end
  end