Remove bunch of js lines in rails

lib/daru/data_tables/data_table.rb

@@ -1,5 +1,6 @@
 module Daru
   module DataTables
+    class Engine < ::Rails::Engine; end if defined?(Rails)
     class DataTable
       attr_accessor :html_options, :element_id, :options, :data
       # @param data [Array, Daru::DataFrame, Daru::Vector] The data provided

lib/daru/data_tables/display/iruby_notebook.rb

@@ -4,14 +4,18 @@ module Daru
   module DataTables
     # generate initializing code
     def self.generate_init_code_js(dependent_js)
-      js_dir = File.expand_path('../js', __dir__)
+      js_dir = File.expand_path(
+        '../../../../vendor/assets/javascripts', __dir__
+      )
       path = File.expand_path('../templates/init.inline.js.erb', __dir__)
       template = File.read(path)
       ERB.new(template).result(binding)
     end
 
     def self.generate_init_code_css(dependent_css)
-      css_dir = File.expand_path('../css', __dir__)
+      css_dir = File.expand_path(
+        '../../../../vendor/assets/stylesheets', __dir__
+      )
       path = File.expand_path('../templates/init.inline.css.erb', __dir__)
       template = File.read(path)
       ERB.new(template).result(binding)

lib/tasks/data_tables.rake

@@ -10,21 +10,23 @@ end
 namespace :data_tables do
   desc "Update datatables javascript and stylesheets dependent files"
   task :update => [:js, :css, :jquery]
+  sh "mkdir -p vendor/assets/javascripts/"
   task :js do
     say "Grabbing Core js from datatables codebase..." do
-      sh "curl -# https://nightly.datatables.net/js/jquery.dataTables.js -L --compressed -o lib/data_tables/js/jquery.dataTables.js"
+      sh "curl -# https://nightly.datatables.net/js/jquery.dataTables.js -L --compressed -o vendor/assets/javascripts/jquery.dataTables.js"
     end
   end
 
+  sh "mkdir -p vendor/assets/stylesheets/"
   task :css do
     say "Grabbing css from the datatables website..." do
-      sh "curl -# https://nightly.datatables.net/css/jquery.dataTables.css -L --compressed -o lib/data_tables/css/jquery.dataTables.css"
+      sh "curl -# https://nightly.datatables.net/css/jquery.dataTables.css -L --compressed -o vendor/assets/stylesheets/jquery.dataTables.css"
     end
   end
 
   task :jquery do
     say "Grabbing jquery from the jquery website..." do
-      sh "curl -# http://code.jquery.com/jquery-latest.min.js -L --compressed -o lib/data_tables/js/jquery-latest.min.js"
+      sh "curl -# http://code.jquery.com/jquery-latest.min.js -L --compressed -o vendor/assets/javascripts/jquery-latest.min.js"
     end
   end
 end