PDF merge controller

concatenators_controller.rb

require 'net/http'

class Pdf::ConcatenatorsController < ApplicationController
  respond_to :html, :js, :json, :xml

  def index
    pdf_concatenators = PdfConcatenator.all
    respond_with @pdf_concatenators
  end

  def new
    pdf_concatenator = PdfConcatenator.new
    respond_with @pdf_concatenator
  end

  def create
    flash[:success] = ""
    @pdf_concatenator = PdfConcatenator.new
    opts = []
    uuid = UUIDTools::UUID.random_create
    Dir.mkdir("tmp/pdfs") unless Dir.exist?("tmp/pdfs")
    Dir.mkdir("tmp/pdfs/#{uuid}")
    params[:pdfs].each do |i, pdf|
      response = Net::HTTP.get(URI.parse(pdf[:url]))
      file_uuid = UUIDTools::UUID.random_create
      path = File.join('tmp/pdfs', uuid, file_uuid)
      f = File.new(path, 'wb')
      f << response
      f.close
      opts << path
    end
    opts << 'cat' << 'output' << "tmp/pdfs/#{uuid}.pdf"
    system("pdftk #{opts.join(" ")}")
    send_data open("tmp/pdfs/#{uuid}.pdf", 'rb').read, :filename => "#{uuid}.pdf"
  end
  
  def show
    pdf_concatenator = PdfConcatenator.find(params[:id])
    respond_with @pdf_concatenator
  end

  def edit
    
  end

  def update
    
  end
end