我尝试使用一些Kendo UI小部件，它们在开发中运行良好。但是当我将我的应用程序部署到Heroku时，它的外观发生了巨大变化。
我编写了一个带有TreeView小部件的示例页面。这是它在开发中的渲染方式:
而在Heroku上的生产环境中:
可以看出，列表标记（树形标记？）已经丢失。
我怀疑这个问题与资产管道有关，因为在开发中执行rake assets:precompile也会导致出错（rake assets:clean可以恢复）。但这让我困惑，因为我的Bootstrap标题在开发和生产环境中都正常工作（虽然在Heroku日志中会出现一些ActionController::RoutingError (No route matches [GET] "/assets/Bootstrap/loading.gif")错误）。
Gemfile:
source 'https://rubygems.org'
gem 'rails'
gem "ancestry"
gem "bootstrap-sass"
gem "will_paginate"
gem "bootstrap-will_paginate"
gem "truncate_html"
gem "slim-rails"
gem "kendoui-rails"
group :development, :test do
gem 'sqlite3'
gem 'rspec-rails'
gem "minitest"
platform :ruby do
gem 'therubyracer'
end
end
group :test do
gem 'capybara'
end
group :development do
gem "nifty-generators"
gem "annotate"
end
group :production do
gem 'pg'
end
group :assets do
gem 'sass-rails', '~> 3.2.3'
gem 'coffee-rails', '~> 3.2.1'
gem 'uglifier', '>= 1.0.3'
end
gem 'jquery-rails', '~> 2.1.3'
gem 'bcrypt-ruby', require: 'bcrypt'
development.rb:
config.cache_classes = false
config.whiny_nils = true
config.consider_all_requests_local = true
config.action_controller.perform_caching = false
config.action_mailer.raise_delivery_errors = false
config.active_support.deprecation = :log
config.action_dispatch.best_standards_support = :builtin
config.active_record.mass_assignment_sanitizer = :strict
config.active_record.auto_explain_threshold_in_seconds = 0.5
config.assets.compress = false
config.assets.debug = true
production.rb:
config.cache_classes = true
config.consider_all_requests_local = false
config.action_controller.perform_caching = true
config.serve_static_assets = false
config.assets.compress = true
config.assets.compile = false
config.assets.digest = true
config.i18n.fallbacks = true
config.active_support.deprecation = :notify
有人知道怎么修复吗？谢谢提供任何帮助。
更新1.
感谢大家的评论，以下是额外的信息。
Heroku 日志：
2013-02-23T02:37:50+00:00 app[web.1]: Started GET "/environment_test/index" for 193.169.36.82 at 2013-02-23 02:37:50 +0000
2013-02-23T02:37:50+00:00 app[web.1]: Processing by EnvironmentTestController#index as HTML
2013-02-23T02:37:50+00:00 app[web.1]: Rendered environment_test/index.html.slim within layouts/application (23.3ms)
2013-02-23T02:37:50+00:00 app[web.1]: Rendered layouts/_header.slim (57.2ms)
2013-02-23T02:37:50+00:00 app[web.1]: Completed 200 OK in 159ms (Views: 158.7ms | ActiveRecord: 0.0ms)
2013-02-23T02:37:50+00:00 heroku[router]: at=info method=GET path=/environment_test/index host=biotriz.herokuapp.com fwd="193.169.36.82" dyno=web.1 queue=0 wait=2ms connect=20ms service=394ms status=200 bytes=1253
2013-02-23T02:37:50+00:00 heroku[router]: at=info method=GET path=/assets/application-43a283ce09b9af356379df3e89b8b1cc.css host=biotriz.herokuapp.com fwd="193.169.36.82" dyno=web.1 queue=0 wait=0ms connect=1ms service=10ms status=200 bytes=186674
2013-02-23T02:37:51+00:00 heroku[router]: at=info method=GET path=/assets/application-8ac08b06d5d57f91da7af9d1e1c345c0.js host=biotriz.herokuapp.com fwd="193.169.36.82" dyno=web.1 queue=0 wait=7ms connect=20ms service=64ms status=200 bytes=648803
2013-02-23T02:37:55+00:00 heroku[router]: at=info method=GET path=/favicon.ico host=biotriz.herokuapp.com fwd="193.169.36.82" dyno=web.1 queue=0 wait=0ms connect=0ms service=5ms status=200 bytes=0
2013-02-23T02:37:55+00:00 app[web.1]: Started GET "/environment_test/index.json" for 193.169.36.82 at 2013-02-23 02:37:55 +0000
2013-02-23T02:37:55+00:00 app[web.1]: Processing by EnvironmentTestController#index as JSON
2013-02-23T02:37:55+00:00 heroku[router]: at=info method=GET path=/assets/glyphicons-halflings-white-6cccd17a7aed91dbc0157d343c68c0d9.png host=biotriz.herokuapp.com fwd="193.169.36.82" dyno=web.1 queue=0 wait=0ms connect=3ms service=66ms status=200 bytes=8777
2013-02-23T02:37:55+00:00 app[web.1]: Completed 200 OK in 104ms (Views: 0.6ms | ActiveRecord: 31.9ms)
2013-02-23T02:37:55+00:00 app[web.1]: Started GET "/assets/Bootstrap/loading.gif" for 193.169.36.82 at 2013-02-23 02:37:55 +0000
2013-02-23T02:37:55+00:00 app[web.1]:
2013-02-23T02:37:55+00:00 app[web.1]: ActionController::RoutingError (No route matches [GET] "/assets/Bootstrap/loading.gif"):
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.12/lib/action_dispatch/middleware/debug_exceptions.rb:21:in `call'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.12/lib/action_dispatch/middleware/show_exceptions.rb:56:in `call'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/rack/logger.rb:32:in `call_app'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/rack/logger.rb:16:in `block in call'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/tagged_logging.rb:22:in `tagged'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/rack/logger.rb:16:in `call'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.12/lib/action_dispatch/middleware/request_id.rb:22:in `call'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/methodoverride.rb:21:in `call'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/runtime.rb:17:in `call'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/cache/strategy/local_cache.rb:72:in `call'
2013-02-23T02:37:55+00:00 heroku[router]: at=info method=GET path=/assets/Bootstrap/loading.gif host=biotriz.herokuapp.com fwd="193.169.36.82" dyno=web.1 queue=0 wait=1ms connect=12ms service=56ms status=404 bytes=728
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/lock.rb:15:in `call'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.12/lib/action_dispatch/middleware/static.rb:62:in `call'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-cache-1.2/lib/rack/cache/context.rb:136:in `forward'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-cache-1.2/lib/rack/cache/context.rb:245:in `fetch'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-cache-1.2/lib/rack/cache/context.rb:185:in `lookup'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-cache-1.2/lib/rack/cache/context.rb:66:in `call!'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-cache-1.2/lib/rack/cache/context.rb:51:in `call'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/engine.rb:479:in `call'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/application.rb:223:in `call'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/content_length.rb:14:in `call'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/rack/log_tailer.rb:17:in `call'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/handler/webrick.rb:59:in `service'
2013-02-23T02:37:55+00:00 app[web.1]: /usr/local/lib/ruby/1.9.1/webrick/httpserver.rb:111:in `service'
2013-02-23T02:37:55+00:00 app[web.1]: /usr/local/lib/ruby/1.9.1/webrick/httpserver.rb:70:in `run'
2013-02-23T02:37:55+00:00 app[web.1]: /usr/local/lib/ruby/1.9.1/webrick/server.rb:183:in `block in start_thread'
2013-02-23T02:37:55+00:00 app[web.1]:
2013-02-23T02:37:55+00:00 app[web.1]:
2013-02-23T02:37:55+00:00 heroku[router]: at=info method=GET path=/environment_test/index.json host=biotriz.herokuapp.com fwd="193.169.36.82" dyno=web.1 queue=0 wait=6ms connect=16ms service=121ms status=200 bytes=390
2013-02-23T02:37:55+00:00 app[web.1]: Started GET "/assets/Bootstrap/sprite.png" for 193.169.36.82 at 2013-02-23 02:37:55 +0000
2013-02-23T02:37:55+00:00 app[web.1]:
2013-02-23T02:37:55+00:00 app[web.1]: ActionController::RoutingError (No route matches [GET] "/assets/Bootstrap/sprite.png"):
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.12/lib/action_dispatch/middleware/debug_exceptions.rb:21:in `call'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.12/lib/action_dispatch/middleware/show_exceptions.rb:56:in `call'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/rack/logger.rb:32:in `call_app'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/rack/logger.rb:16:in `block in call'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/tagged_logging.rb:22:in `tagged'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/rack/logger.rb:16:in `call'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.12/lib/action_dispatch/middleware/request_id.rb:22:in `call'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/methodoverride.rb:21:in `call'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/runtime.rb:17:in `call'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/cache/strategy/local_cache.rb:72:in `call'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/lock.rb:15:in `call'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.12/lib/action_dispatch/middleware/static.rb:62:in `call'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-cache-1.2/lib/rack/cache/context.rb:136:in `forward'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-cache-1.2/lib/rack/cache/context.rb:245:in `fetch'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-cache-1.2/lib/rack/cache/context.rb:185:in `lookup'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-cache-1.2/lib/rack/cache/context.rb:66:in `call!'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-cache-1.2/lib/rack/cache/context.rb:51:in `call'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/engine.rb:479:in `call'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/application.rb:223:in `call'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/content_length.rb:14:in `call'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/rack/log_tailer.rb:17:in `call'
2013-02-23T02:37:55+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/handler/webrick.rb:59:in `service'
2013-02-23T02:37:55+00:00 app[web.1]: /usr/local/lib/ruby/1.9.1/webrick/httpserver.rb:111:in `service'
2013-02-23T02:37:55+00:00 app[web.1]: /usr/local/lib/ruby/1.9.1/webrick/httpserver.rb:70:in `run'
2013-02-23T02:37:55+00:00 app[web.1]: /usr/local/lib/ruby/1.9.1/webrick/server.rb:183:in `block in start_thread'
2013-02-23T02:37:55+00:00 app[web.1]:
2013-02-23T02:37:55+00:00 app[web.1]:
2013-02-23T02:37:55+00:00 heroku[router]: at=info method=GET path=/assets/Bootstrap/sprite.png host=biotriz.herokuapp.com fwd="193.169.36.82" dyno=web.1 queue=0 wait=0ms connect=1ms service=7ms status=404 bytes=728
2013-02-23T02:38:19+00:00 app[web.1]: Started GET "/environment_test/index.json?id=33" for 193.169.36.82 at 2013-02-23 02:38:19 +0000
2013-02-23T02:38:19+00:00 app[web.1]: Processing by EnvironmentTestController#index as JSON
2013-02-23T02:38:19+00:00 app[web.1]: Parameters: {"id"=>"33"}
2013-02-23T02:38:19+00:00 app[web.1]: Completed 200 OK in 17ms (Views: 0.4ms | ActiveRecord: 14.0ms)
2013-02-23T02:38:19+00:00 heroku[router]: at=info method=GET path=/environment_test/index.json?id=33 host=biotriz.herokuapp.com fwd="193.169.36.82" dyno=web.1 queue=0 wait=0ms connect=1ms service=26ms status=200 bytes=266
在我的清单CSS文件（application.css）中，包含了两个与Kendo相关的CSS文件：kendo.common.min.css（包含公共代码，未压缩版本）和kendo.bootstrap.min.css（特定主题代码，未压缩版本）。
顺便说一下，在
kendoui-rails gem的vendor目录中，有以下结构：vendor
└── assets
├── javascripts
│ └── ...
└── stylesheets
└── kendo
├── Bootstrap
│ ├── editor.png
│ ├── imagebrowser.png
│ ├── loading.gif
│ ├── loading-image.gif
│ ├── slider-h.gif
│ ├── slider-v.gif
│ └── sprite.png
├── ... # Some other theme-specific dirs
├── kendo.bootstrap.min.css
├── kendo.common.min.css
└── ... # Some other theme-specific CSS's
文件kendo.bootstrap.min.css包含引用图片的代码（url('Bootstrap/sprite.png')和url('Bootstrap/loading.gif')），这些图片在生产环境中并不显示（但是它们存在于Bootstrap目录中），所以我认为Chris Rueber是正确的。那么我该如何解决这个问题呢？
css文件，可能它们被包含为引擎。请告诉我们您是如何安装Kendo UI的。 - R Milushevgem“kendoui-rails”；2）在bundle install之后运行rails generate kendoui:install --theme=bootstrap（如博客文章所述）。我也没有在应用程序的根目录中找到任何Kendo UI CSS文件，只有在gem安装目录中。 - nameless