hot_parts

application_helper.rb

  def hot_parts
    # initialize some empties
    hps = []
    hp = false

    # get 6 random parts
    while(hps.length < 6 )
      # Set flag variable to ensure entry into inner loop first time around
      first = true
      # Validate uniqueness and non nillishness
      while( hps.include?(hp) || !hp.present? || first )
        if order = Order.within_days(15).rand
        # Grab a random part if there are any to choose from
          hp = order.order_products.last.part_number if order.order_products.present?
          first = false
        end
      end
      # Assume it has no photos
      has_photos = false
      # Don't care if it has photos if it's not in stock
      if hp.quantity > 0
        # If it has an album and some photos in that album, it might have photos
        has_photos = !hp.album.photos.empty? if hp.album.present?
        # It definitely has photos if the above was true and the first photo has an image_file! 
        has_photos = true if has_photos && hp.album.photos.first.image_file.present?
      end
      # Validate everything we show in the view:
      # is_valid = ![hp.price.present?, hp.manufacturer.present?, hp.name.present?, hp.number.present?, hp.to_param.present?].include?(false)

      # Shove it in the array if it's stocked and has an image
      hps << hp if has_photos#  && is_valid
      #hps.uniq! #uniquness guaranteed by inner while loop condition
      #hps.compact!
    end

    # randomize, reject all non-uniques
    hps.present? ? hps.sort!{rand} : []
  end