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这几天我一直在为此苦苦挣扎——我在我的 rails 应用程序中添加了引导程序（和其他一些宝石），但由于某种原因，适当的 CSS 文件没有呈现，因此引导程序样式没有显示。

以下是我文件的相关部分：

application.html.erb在app/views/layouts：

<head>
  <title>Myapp</title>
  <%= stylesheet_link_tag    "application", :media => "all" %>
  <%= javascript_include_tag "application" %>
  <%= csrf_meta_tags %>
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
  <script type="text/javascript" src="https://raw.github.com/twitter/bootstrap/master/js/bootstrap-dropdown.js"></script>
</head>

application.css在app/assets/stylesheets：

/*
 * This is a manifest file that'll be compiled into application.css, which will include all the files
 * listed below.
 *
 * Any CSS and SCSS file within this directory, lib/assets/stylesheets, vendor/assets/stylesheets,
 * or vendor/assets/stylesheets of plugins, if any, can be referenced here using a relative path.
 *
 * You're free to add application-wide styles to this file and they'll appear at the top of the
 * compiled file, but it's generally better to create a new file per style scope.
 *
 *= require_self
 *= require_tree .
 */

（这个文件夹中还有很多 CSS 文件，包括bootstrap_and_overrides.css和gmaps4rails.css）。

当我加载页面时服务器日志：

$ rails server
=> Booting WEBrick
=> Rails 3.2.8 application starting in development on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server
        SECURITY WARNING: No secret option provided to Rack::Session::Cookie.
        This poses a security threat. It is strongly recommended that you
        provide a secret to prevent exploits that may be possible from crafted
        cookies. This will not be supported in future versions of Rack, and
        future versions will even invalidate your existing user cookies.

        Called from: /Users/me/.rvm/gems/ruby-2.0.0-p0/gems/actionpack-3.2.8/lib/action_dispatch/middleware/session/abstract_store.rb:28:in `initialize'.
[2013-03-11 15:19:32] INFO  WEBrick 1.3.1
[2013-03-11 15:19:32] INFO  ruby 2.0.0 (2013-02-24) [x86_64-darwin11.4.2]
[2013-03-11 15:19:32] INFO  WEBrick::HTTPServer#start: pid=94815 port=3000


Started GET "/" for 127.0.0.1 at 2013-03-11 15:19:35 -0700
Processing by HomeController#index as HTML
  Rendered home/index.html.erb within layouts/application (2.8ms)
  Trip Load (0.2ms)  SELECT "trips".* FROM "trips" 
  Rendered layouts/_navigation.html.erb (62.0ms)
Completed 200 OK in 143ms (Views: 141.0ms | ActiveRecord: 1.3ms)

以及实际在 Chrome 中呈现的源代码：

<head>
  <title>Myapp</title>
  <link href="/assets/application.css?body=1" media="all" rel="stylesheet" type="text/css" />
  <script src="/assets/application.js?body=1" type="text/javascript"></script>
  <meta content="authenticity_token" name="csrf-param" />
<meta content="GfG+KCsrNZaChqWvUz/g5RqsdHrXOtumFzHaOjJmFQg=" name="csrf-token" />
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
  <script type="text/javascript" src="https://raw.github.com/twitter/bootstrap/master/js/bootstrap-dropdown.js"></script>
</head>

我的Gemfile：

gem "bootstrap-sass", '~> 2.3.0.1'
gem "simple_form"

gem 'gmaps4rails'

并且config/environments/development.rb：

config.cache_classes = false

# Log error messages when you accidentally call methods on nil.
config.whiny_nils = true

# Show full error reports and disable caching
config.consider_all_requests_local       = true
config.action_controller.perform_caching = false

# Don't care if the mailer can't send
config.action_mailer.raise_delivery_errors = false

# Print deprecation notices to the Rails logger
config.active_support.deprecation = :log

# Only use best-standards-support built into browsers
config.action_dispatch.best_standards_support = :builtin

# Raise exception on mass assignment protection for Active Record models
config.active_record.mass_assignment_sanitizer = :strict

# Log the query plan for queries taking more than this (works
# with SQLite, MySQL, and PostgreSQL)
config.active_record.auto_explain_threshold_in_seconds = 0.5

# Do not compress assets
config.assets.compress = false

# Expands the lines which load the assets
config.assets.debug = true

我将资产管道config/application.rb设置为 true，并且我没有更改调试设置。我RAILS_ENV的是development。据我了解，rails 应该编译和提供所有 CSS 文件，包括boostrap_and_overrides.css.scss因为require_tree .调用。我跑过很多次rake assets:precompile，bundle exec rake assets:precompile但我认为这不重要。我正在运行 ruby​​ 2.0.0p0（2013-02-24 修订版 39474）。

真正奇怪的是，我和我在这个项目上的合作伙伴拥有完全相同的代码（来自我们的 github 存储库），它可以在他们的本地机器上运行，但它不能在我的机器上运行。有没有人对正在发生的事情有任何意见？

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1 回答 1

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我在 Rails 3.2.6 中也遇到了同样的问题，当我升级到 Rails 3.2.15 时它就消失了。

于 2013-11-20T09:01:24.277 回答