带有javascript_include_tag的Rails 3 Production Nil错误

Question

我目前正在尝试部署一个 rails 3.0.9 应用程序。该应用程序在我的开发盒（ruby 1.8.7 p352，mongrel）上运行良好，但在生产盒（ruby 1.8.7 p334，Passenger）上产生以下错误。

A ActionView::Template::Error occurred in site#index:
 can't convert nil into String
 vendor/bundle/ruby/1.8/gems/actionpack-3.0.9/lib/action_view/helpers/asset_tag_helper.rb:888:in `read'

堆栈跟踪是：

vendor/bundle/ruby/1.8/gems/actionpack-3.0.9/lib/action_view/helpers/asset_tag_helper.rb:888:in `read'
vendor/bundle/ruby/1.8/gems/actionpack-3.0.9/lib/action_view/helpers/asset_tag_helper.rb:888:in `join_asset_file_contents'
vendor/bundle/ruby/1.8/gems/actionpack-3.0.9/lib/action_view/helpers/asset_tag_helper.rb:888:in `collect'
vendor/bundle/ruby/1.8/gems/actionpack-3.0.9/lib/action_view/helpers/asset_tag_helper.rb:888:in `join_asset_file_contents'
vendor/bundle/ruby/1.8/gems/actionpack-3.0.9/lib/action_view/helpers/asset_tag_helper.rb:894:in `write_asset_file_contents'
vendor/bundle/ruby/1.8/gems/activesupport-3.0.9/lib/active_support/core_ext/file/atomic.rb:20:in `atomic_write'
vendor/bundle/ruby/1.8/gems/actionpack-3.0.9/lib/action_view/helpers/asset_tag_helper.rb:894:in `write_asset_file_contents'
vendor/bundle/ruby/1.8/gems/actionpack-3.0.9/lib/action_view/helpers/asset_tag_helper.rb:356:in `javascript_include_tag'
app/views/layouts/application.html.erb:79:in `_app_views_layouts_application_html_erb___689799961_85527100_0'

application.html.erb 的第 79 行是：

<%= javascript_include_tag (Rails.env.development? ? "jquery.min.js" :  "http://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js"),
                         "jquery-ui.min",
                         "application", :cache => true %>

我尝试从 javascript_include_Tag 中删除条件，但这没有任何区别

Answer 1

如果所有参数实际上都是服务器上的文件，则只能使用 :cache=>true 选项 - rails 不会为您从 googleapis 获取 jquery（如果这样做，它宁愿失败）

将 jquery.min.js 包含在它自己的 javascript_include_tag 中，没有 :cache 选项，你应该没问题。或者，您可以停止尝试从 googleapis 加载 jquery。