adding chunks controller

app/assets/javascripts/learning_object/chunks.coffee

+# Place all the behaviors and hooks related to the matching controller here.
+# All this logic will automatically be available in application.js.
+# You can use CoffeeScript in this file: http://coffeescript.org/

app/controllers/learning_object/chunks_controller.rb

+class LearningObject::ChunksController < ApplicationController
+  layout nil
+
+  #GET /chunk
+  def show
+    #chunk folder path based on the parameters
+    dir = "/tmp/#{params[:resumableIdentifier]}"
+    #chunk path based on the parameters
+    chunk = "#{dir}/#{params[:resumableFilename]}.part#{params[:resumableChunkNumber]}"
+
+    if File.exists?(chunk)
+      #Let resumable.js know this chunk already exists
+      render :nothing => true, :status => 200
+    else
+      #Let resumable.js know this chunk doesnt exists and needs to be uploaded
+      render :nothing => true, :status => 404
+    end
+
+  end
+
+  #POST /chunk
+  def create
+
+    #chunk folder path based on the parameters
+    dir = "/tmp/#{params[:resumableIdentifier]}"
+    #chunk path based on the parameters
+    chunk = "#{dir}/#{params[:resumableFilename]}.part#{params[:resumableChunkNumber]}"
+
+    #Create chunks directory when not present on system
+    if !File.directory?(dir)
+      FileUtils.mkdir(dir, :mode => 0700)
+    end
+
+    #Move the uploaded chunk to the directory
+    FileUtils.mv params[:file].tempfile, chunk
+
+    #Concatenate all the partial files into the original file
+
+    currentSize = params[:resumableChunkNumber].to_i * params[:resumableChunkSize].to_i
+    filesize = params[:resumableTotalSize].to_i
+
+    #When all chunks are uploaded
+    if (currentSize + params[:resumableCurrentChunkSize].to_i) >= filesize
+
+      #Create a target file
+      File.open("#{dir}/#{params[:resumableFilename]}", "a") do |target|
+        #Loop trough the chunks
+        for i in 1..params[:resumableChunkNumber].to_i
+          #Select the chunk
+          chunk = File.open("#{dir}/#{params[:resumableFilename]}.part#{i}", 'r').read
+
+          #Write chunk into target file
+          chunk.each_line do |line|
+            target << line
+          end
+
+          #Deleting chunk
+          FileUtils.rm "#{dir}/#{params[:resumableFilename]}.part#{i}", :force => true
+        end
+        puts "File saved to #{dir}/#{params[:resumableFilename]}"
+      end
+    end
+
+    render :nothing => true, :status => 200
+  end
+end

config/routes.rb

@@ -66,6 +66,8 @@ Rails.application.routes.draw do
       post :like
       post :bookmarks
       get :collections
+
+      resource :chunk, only: [:create, :show]
     end
   end
 

test/controllers/learning_object/chunks_controller_test.rb

+require 'test_helper'
+
+class LearningObject::ChunksControllerTest < ActionController::TestCase
+  test "should get show" do
+    get :show
+    assert_response :success
+  end
+
+  test "should get create" do
+    get :create
+    assert_response :success
+  end
+
+end