我一直在努力解决这个问题已经有一段时间了，我找不到像我这样简单问题的帖子。我是新手与Heroku和Rails一起工作，我正在试图弄清楚如何让资产管道与我在“App / assets / stylesheets”目录中的css文件一起工作。我已尝试关注来自http://guides.rubyonrails.org/asset_pipeline.html和http://www.youtube.com/watch?v=p_3dIPgXgkg的帖子，但我无法弄清楚如何让Heroku使用新的css文件部署一个非常简单的网站。我已经通过禁用管道来验证资产管道是问题，Heroku部署它就好了。我的本地服务器使用css就好了，所以问题必须是我对资产管道的设置。
我在以下位置创建了一个新的css文件：“app / assets / stylesheets / custom.css”
以下是清单文件的内容在“app / assets / stylesheets / application.css”：
/*
* This is a manifest file that'll automatically include all the stylesheets available in this directory
* and any sub-directories. 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 .
*/
以下是我的“config / application.rb”文件：
require File.expand_path('../boot', __FILE__)
# Pick the frameworks you want:
require "active_record/railtie"
require "action_controller/railtie"
require "action_mailer/railtie"
require "active_resource/railtie"
require "sprockets/railtie"
# require "rails/test_unit/railtie"
if defined?(Bundler)
# If you precompile assets before deploying to production, use this line
Bundler.require(*Rails.groups(:assets => %w(development test)))
# If you want your assets lazily compiled in production, use this line
# Bundler.require(:default, :assets, Rails.env)
end
module MegaProject
class Application < Rails::Application
# Settings in config/environments/* take precedence over those specified here.
# Application configuration should go into files in config/initializers
# -- all .rb files in that directory are automatically loaded.
# Custom directories with classes and modules you want to be autoloadable.
# config.autoload_paths += %W(#{config.root}/extras)
# Only load the plugins named here, in the order given (default is alphabetical).
# :all can be used as a placeholder for all plugins not explicitly named.
# config.plugins = [ :exception_notification, :ssl_requirement, :all ]
# Activate observers that should always be running.
# config.active_record.observers = :cacher, :garbage_collector, :forum_observer
# Set Time.zone default to the specified zone and make Active Record auto-convert to this zone.
# Run "rake -D time" for a list of tasks for finding time zone names. Default is UTC.
# config.time_zone = 'Central Time (US & Canada)'
# The default locale is :en and all translations from config/locales/*.rb,yml are auto loaded.
# config.i18n.load_path += Dir[Rails.root.join('my', 'locales', '*.{rb,yml}').to_s]
# config.i18n.default_locale = :de
# Configure the default encoding used in templates for Ruby 1.9.
config.encoding = "utf-8"
# Configure sensitive parameters which will be filtered from the log file.
config.filter_parameters += [:password]
# Enable the asset pipeline
config.assets.enabled = true
# Version of your assets, change this if you want to expire all your assets
config.assets.version = '1.0'
end
end
我在“Rails 3.1.3”上使用“ruby 1.9.2p290（2011-07-09修订版32553）[x86_64-darwin11.1.0]”
最后，我们来看看我的Gemfile：
source 'http://rubygems.org'
gem 'rails', '3.1.3'
gem 'sqlite3'
gem 'jquery-rails'
# Bundle edge Rails instead:
# gem 'rails', :git => 'git://github.com/rails/rails.git'
# Gems used only for assets and not required
# in production environments by default.
group :assets do
gem 'sass-rails', '~> 3.1.5'
gem 'coffee-rails', '~> 3.1.1'
gem 'uglifier', '>= 1.0.3'
end
group :production do
gem 'pg'
end
# To use ActiveModel has_secure_password
# gem 'bcrypt-ruby', '~> 3.0.0'
# Use unicorn as the web server
# gem 'unicorn'
# Deploy with Capistrano
# gem 'capistrano'
# To use debugger
# gem 'ruby-debug19', :require => 'ruby-debug'
有人可以帮我解决这个问题吗？谢谢Nicholas Kincaid
以下是j_mcnally请求的输出：
Nicholass-MacBook-Pro:mega_project nbkincaid$ git push heroku master
Counting objects: 9, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (5/5), done.
Writing objects: 100% (5/5), 513 bytes, done.
Total 5 (delta 4), reused 0 (delta 0)
-----> Heroku receiving push
-----> Removing .DS_Store files
-----> Ruby/Rails app detected
-----> Detected Rails is not set to serve static_assets
Installing rails3_serve_static_assets... done
-----> Configure Rails 3 to disable x-sendfile
Installing rails3_disable_x_sendfile... done
-----> Configure Rails to log to stdout
Installing rails_log_stdout... done
-----> Gemfile detected, running Bundler version 1.0.7
Unresolved dependencies detected; Installing...
Using --without development:test
Fetching source index for http://rubygems.org/
Installing rake (0.9.2.2)
Installing multi_json (1.1.0)
Installing activesupport (3.1.3)
Installing builder (3.0.0)
Installing i18n (0.6.0)
Installing activemodel (3.1.3)
Installing erubis (2.7.0)
Installing rack (1.3.6)
Installing rack-cache (1.1)
Installing rack-mount (0.8.3)
Installing rack-test (0.6.1)
Installing hike (1.2.1)
Installing tilt (1.3.3)
Installing sprockets (2.0.3)
Installing actionpack (3.1.3)
Installing mime-types (1.17.2)
Installing polyglot (0.3.3)
Installing treetop (1.4.10)
Installing mail (2.3.0)
Installing actionmailer (3.1.3)
Installing arel (2.2.2)
Installing tzinfo (0.3.31)
Installing activerecord (3.1.3)
Installing activeresource (3.1.3)
Installing coffee-script-source (1.2.0)
Installing execjs (1.3.0)
Installing coffee-script (2.2.0)
Installing rack-ssl (1.3.2)
Installing json (1.6.5) with native extensions
Installing rdoc (3.12)
Installing thor (0.14.6)
Installing railties (3.1.3)
Installing coffee-rails (3.1.1)
Installing jquery-rails (1.0.19)
Installing pg (0.13.1) with native extensions
Using bundler (1.0.7)
Installing rails (3.1.3)
Installing sass (3.1.15)
Installing sass-rails (3.1.5)
Installing sqlite3 (1.3.5) with native extensions
Installing uglifier (1.2.3)
Your bundle is complete! It was installed into ./.bundle/gems/
-----> Compiled slug size is 7.0MB
-----> Launching... done, v27
http://strong-moon-9939.heroku.com deployed to Heroku
To git@heroku.com:strong-moon-9939.git
95351fa..8e4131f master -> master
以下是heroku日志消息给我的内容：
2012-02-24T06:57:43+00:00 heroku[router]: GET strong-moon-9939.heroku.com/ dyno=web.1 queue=0 wait=0ms service=7ms status=500 bytes=728
2012-02-24T06:57:43+00:00 heroku[nginx]: 24.13.158.102 - - [24/Feb/2012:06:57:43 +0000] "GET / HTTP/1.1" 500 728 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_2) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.56 Safari/535.11" strong-moon-9939.heroku.com
2012-02-24T06:58:38+00:00 app[web.1]:
2012-02-24T06:58:38+00:00 app[web.1]:
2012-02-24T06:58:38+00:00 app[web.1]: Started GET "/" for 24.13.158.102 at 2012-02-23 22:58:38 -0800
2012-02-24T06:58:38+00:00 app[web.1]: Processing by UsersController#home as HTML
2012-02-24T06:58:38+00:00 app[web.1]: Rendered users/home.html.erb within layouts/application (0.0ms)
2012-02-24T06:58:38+00:00 app[web.1]: Completed 500 Internal Server Error in 2ms
2012-02-24T06:58:38+00:00 app[web.1]:
2012-02-24T06:58:38+00:00 app[web.1]: ActionView::Template::Error (custom.css isn't precompiled):
2012-02-24T06:58:38+00:00 app[web.1]: 3: <head>
2012-02-24T06:58:38+00:00 app[web.1]: 4: <title><%= title %></title>
2012-02-24T06:58:38+00:00 app[web.1]: 5: <%= stylesheet_link_tag "application" %>
2012-02-24T06:58:38+00:00 app[web.1]: 6: <%= stylesheet_link_tag "custom" %>
2012-02-24T06:58:38+00:00 app[web.1]: 7: <%= javascript_include_tag "application" %>
2012-02-24T06:58:38+00:00 app[web.1]: 8: <%= csrf_meta_tags %>
2012-02-24T06:58:38+00:00 app[web.1]: 9: </head>
2012-02-24T06:58:38+00:00 app[web.1]: app/views/layouts/application.html.erb:6:in `_app_views_layouts_application_html_erb__150896894354786412_13162880'
2012-02-24T06:58:38+00:00 app[web.1]:
2012-02-24T06:58:38+00:00 app[web.1]:
2012-02-24T06:58:38+00:00 app[web.1]: cache: [GET /] miss
2012-02-24T06:58:38+00:00 heroku[router]: GET strong-moon-9939.heroku.com/ dyno=web.1 queue=0 wait=0ms service=7ms status=500 bytes=728
2012-02-24T06:58:38+00:00 heroku[nginx]: 24.13.158.102 - - [24/Feb/2012:06:58:38 +0000] "GET / HTTP/1.1" 500 728 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_2) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.56 Safari/535.11" strong-moon-9939.heroku.com
答案 0 :(得分：2)
所以我不确定，但可能是你已经部署到了错误的Heroku环境。为了使用资产管道，rails 3.1你必须创建一个heroku雪松环境。有关详细信息，请访问heroku网站
http://devcenter.heroku.com/articles/rails3x-asset-pipeline-cedar
引用该网站
虽然Rails 3.1和3.2可以在没有资产管道的Bamboo堆栈上运行，但这些版本的Rails在Heroku的Cedar堆栈上运行得最好。对于新用户，我们建议您阅读我们在Cedar上创建Rails 3.0应用程序的教程，然后再继续。
答案 1 :(得分：1)
将此添加到application.rb
config.assets.initialize_on_precompile = false
答案 2 :(得分：0)
好的，我终于想出了这个。在仔细查看http://guides.rubyonrails.org/asset_pipeline.html之后，我意识到我需要添加：
//= require custom
到application.css文件。我在评论之外输入了这个，这解决了我的问题。我能够在本地进行预编译，之后一切都在Heroku上完美运行。感谢所有帮助我实现目标的人。