weirdness on setting commissions

gistfile1.rb

      # set commission only for non artists or artists whose not buying their own art
      Rails.logger.debug '*' * 100
      Rails.logger.debug "artist id: #{User.current.artist.id} product id: #{li.product.id}  (#{!User.current.artist}) || (#{User.current.artist && !User.current.artist.products.include?(li.product)})"
      li.set_commissions if !User.current.artist || (User.current.artist && !User.current.artist.products.include?(li.product))