adds zip_export utility first run

app/controllers/zip_exports_controller.rb

@@ -0,0 +1,21 @@
+class ZipExportsController < ApplicationController
+  before_action :load_var
+  before_action :check_edit_permissions
+
+  def download
+    send_data @zip_export.zip_file,
+              filename: @zip_export.file_file_name + '.zip',
+              type: @zip_export.file_content_type
+  end
+
+  private
+
+  def load_var
+    @zip_export = ZipExport.find_by_id(params[:id])
+    render_404 unless @zip_export
+  end
+
+  def check_edit_permissions
+    render_403 unless @zip_export.user == current_user
+  end
+end

app/models/zip_export.rb

@@ -0,0 +1,6 @@
+class ZipExport < ActiveRecord::Base
+  belongs_to :user
+  has_attached_file :zip_file
+  validates_attachment :zip_file,
+                       content_type: { content_type: 'application/zip' }
+end

app/utilities/delayed_exporter.rb

@@ -0,0 +1,36 @@
+require 'zip'
+require 'tmpdir'
+
+class DelayedExporter
+  include Rails.application.routes.url_helpers
+
+  def initialize(options = {})
+    @user = options.fetch(:user) { :user_must_be_present }
+    @zip_export = ZipExport.new(user: @user)
+  end
+
+  def run(&collection)
+    Delayed::Job.enqueue(setup(&collection))
+  end
+
+  def setup
+    temp_dir = Dir.mktempdir
+    zip_path = File.join(temp_dir, 'export.zip')
+    Zip::ZipFile.open(zip_path, true) do |zipfile|
+      yield(zipfile) if block_given?
+    end
+    @zip_export.zip_file = File.open(zip_path)
+    generate_notification if @zip_export.save
+  end
+
+  private
+
+  def generate_notification
+    notification = Notification.create(
+      type_of: :system_message,
+      title: t('zip_export.notification_title'),
+      message: zip_exports_download_url(@zip_export)
+    )
+    UserNotification.create(notification: notification, user: @user.id)
+  end
+end

config/locales/en.yml

@@ -1542,6 +1542,8 @@ en:
       deleted: "(deleted)"
     popover_html: "<span class='silver'>Team:</span>&nbsp;%{team} <br> <span class='silver'>Role:</span>&nbsp;%{role} <br> <span class='silver'>Joined:</span>&nbsp;%{time}"
 
+  zip_export:
+    notification_title: 'Your package is ready to be exported!'
   # This section contains general words that can be used in any parts of
   # application.
 

config/routes.rb

@@ -113,6 +113,11 @@ Rails.application.routes.draw do
         to: 'user_notifications#index',
         as: 'notifications'
 
+    # Get Zip Export
+    get 'zip_exports/download/:id',
+        to: 'zip_exports#download',
+        as: 'zip_exports_download'
+        
     resources :teams do
       resources :samples, only: [:new, :create]
       resources :sample_types, except: [:show, :new] do

db/migrate/20170321131116_create_zip_exports.rb

@@ -0,0 +1,10 @@
+class CreateZipExports < ActiveRecord::Migration
+  def change
+    create_table :zip_exports do |t|
+      t.references :user, index: true, foreign_key: true
+      t.timestamps null: false
+    end
+
+    add_attachment :zip_exports, :zip_file
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20170306121855) do
+ActiveRecord::Schema.define(version: 20170321131116) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -700,6 +700,18 @@ ActiveRecord::Schema.define(version: 20170306121855) do
     t.string  "proof_key_old_exp", null: false
   end
 
+  create_table "zip_exports", force: :cascade do |t|
+    t.integer  "user_id"
+    t.datetime "created_at",            null: false
+    t.datetime "updated_at",            null: false
+    t.string   "zip_file_file_name"
+    t.string   "zip_file_content_type"
+    t.integer  "zip_file_file_size"
+    t.datetime "zip_file_updated_at"
+  end
+
+  add_index "zip_exports", ["user_id"], name: "index_zip_exports_on_user_id", using: :btree
+
   add_foreign_key "activities", "my_modules"
   add_foreign_key "activities", "projects"
   add_foreign_key "activities", "users"
@@ -815,4 +827,5 @@ ActiveRecord::Schema.define(version: 20170306121855) do
   add_foreign_key "users", "teams", column: "current_team_id"
   add_foreign_key "wopi_actions", "wopi_apps"
   add_foreign_key "wopi_apps", "wopi_discoveries"
+  add_foreign_key "zip_exports", "users"
 end

test/fixtures/zip_exports.yml

@@ -0,0 +1,9 @@
+# Read about fixtures at http://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
+
+one:
+  user_id: 
+  zip_file: 
+
+two:
+  user_id: 
+  zip_file: 

test/models/zip_export_test.rb

@@ -0,0 +1,7 @@
+require 'test_helper'
+
+class ZipExportTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end