TypeError:Object不支持此属性或方法

Question

我创建了一个数据库(空)的rails应用程序.当我尝试查看我的产品页面时,我在http:// localhost:3000/products页面上收到以下错误.在迁移数据库之前,应用程序确实起作用.我正在使用therubyracer,我在Windows 7上.

ExecJS::ProgramError in Products#index
Showing C:/RailsInstaller/DevKit/home/JP/nameofapp/app/views/layouts/application.html.erb where line #16 raised:

TypeError: Object doesn't support this property or method
  (in C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/turbolinks-2.5.3/lib/assets/javascripts/turbolinks.js.coffee)
Extracted source (around line #16):

13     <script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
14     
15     <%= stylesheet_link_tag    'application', media: 'all', 'data-turbolinks-track' => true %>
16     <%= javascript_include_tag 'application', 'data-turbolinks-track' => true %>
17     <%= csrf_meta_tags %>
18     
19   </head>

Rails.root: C:/RailsInstaller/DevKit/home/JP/nameofapp

这是我在Rails服务器上得到的:

Started GET "/products" for 127.0.0.1 at 2015-04-23 22:28:06 -0400
  ActiveRecord::SchemaMigration Load (0.0ms)  SELECT "schema_migrations".* FROM
"schema_migrations"
Processing by ProductsController#index as HTML
  Product Load (0.0ms)  SELECT "products".* FROM "products"
  Rendered products/index.html.erb within layouts/application (4.0ms)
Completed 500 Internal Server Error in 3391ms

ActionView::Template::Error (TypeError: Object doesn't support this property or
method
  (in C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/turbolinks-2.5.3/lib/
assets/javascripts/turbolinks.js.coffee)):
    13:   <script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.mi
n.js"></script>
    14:
    15:   <%= stylesheet_link_tag    'application', media: 'all', 'data-turbolin
ks-track' => true %>
    16:   <%= javascript_include_tag 'application', 'data-turbolinks-track' => t
rue %>
    17:   <%= csrf_meta_tags %>
    18:
    19: </head>
  app/views/layouts/application.html.erb:16:in `_app_views_layouts_application_h
tml_erb__912949727_56715336'


  Rendered C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/actionpack-4.1.8
/lib/action_dispatch/middleware/templates/rescues/_trace.html.erb (1.0ms)
  Rendered C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/actionpack-4.1.8
/lib/action_dispatch/middleware/templates/rescues/_request_and_response.html.erb
 (6.0ms)
  Rendered C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/actionpack-4.1.8
/lib/action_dispatch/middleware/templates/rescues/template_error.html.erb within
 rescues/layout (27.0ms)

感谢您的任何帮助.

Answer 1

我从application.js中删除了require_tree并且它工作正常

//= require jquery 
//= require jquery_ujs 
//= require turbolinks 
// require_tree .

Answer 2

发生错误是因为找到位于app/assets中的正确资产时出现问题.要解决此问题,您可以按照以下步骤操作.

将gem'coffee -script-source','1.8.0'添加到Gemfile中并运行bundle install然后运行bundle update coffee-script-source 重新启动rails server或者有一个脏的解决方法是更改​​代码

<%= stylesheet_link_tag "application", media: "all", "data-turbolinks-track" => true %>
<%= javascript_include_tag "application", "data-turbolinks-track" => true %>
<%= csrf_meta_tags %>

至

<%= stylesheet_link_tag "default", media: "all", "data-turbolinks-track" => true %>
<%= javascript_include_tag "default", "data-turbolinks-track" => true %>
<%= csrf_meta_tags %>

但请注意,此解决方法并未真正解决应用程序问题,它只是使您的应用程序无需预期的样式表和javascripts.

Answer 3

我认为最好的解决方案是删除 application.js 文件中的斜杠，例如

= require jquery
= require jquery_ujs
= require turbolinks
= require_tree .

Answer 4

我也遇到了这个问题，请查看该线程上的广泛解决方案， ExecJS::RuntimeError on Windows试图遵循@Kevin P的rubytutorial。另外，@evedoevelli在另一个线程上的解决方案：Rails ExecJS::ProgramError in Pages#家？作品。我使用了第二种解决方案，它是最新的日期解决方案。