gistfile1.rb

def vote
    if !@hairstyle = Hairstyle.find_by_id(params[:id])
      redirect_to root_url, notice: 'Please select at least one hairstyle'
    else
      @client_ip = request.remote_ip
       blacklist = Blacklist.find_by_ip(@client_ip)
      if blacklist.try(:ip) == @client_ip
        redirect_to root_url, notice: 'Looks like you\'ve voted recently, come back in 24hrs.'
      else
        if @hairstyle = Hairstyle.find_by_id(params[:id])
          @hairstyle.increment('count')
          @hairstyle.save
          Blacklist.create(:ip => @client_ip)
          redirect_to root_url, notice: 'Thanks for Voting! Come back in 24hrs.'
        end
      end
    end
  end