为什么我只在尝试将应用程序上传到Heroku时才获得ActionView :: Template :: Error？
我的应用程序在我的本地服务器上运行，但当我将它上传到Heroku时，我得到一个页面，上面写着： "We're sorry, but something went wrong."
当我查看Heroku日志时，我看到一个错误行：
ActionView::Template::Error (/app/app/assets/stylesheets/application.css has already been required)
如果我的应用程序在我的本地环境中正常工作，这意味着什么？ 有关如何排除故障的任何建议？
对于它的价值，我的gemfile看起来像这样：
source 'https://rubygems.org' gem 'rails', '3.2.8' gem 'bootstrap-sass' gem 'bcrypt-ruby', '3.0.1' gem 'json' gem 'ruby-fs-stack' group :development, :test do gem 'sqlite3', '1.3.5' gem 'rspec-rails', '2.11.0' end # Gems used only for assets and not required # in production environments by default. group :assets do gem 'sass-rails', '3.2.5' gem 'coffee-rails', '3.2.2' gem 'uglifier', '1.2.3' end gem 'jquery-rails', '2.0.2' group :test do gem 'capybara', '1.1.2' gem 'factory_girl_rails', '4.1.0' end group :production do gem 'pg', '0.12.2' end
这是Heroku日志：
2012-12-11T18:10:43+00:00 app[web.1]: Processing by StaticPagesController#home as HTML 2012-12-11T18:10:43+00:00 app[web.1]: Rendered static_pages/home.html.erb within layouts/application (11.4ms) 2012-12-11T18:10:43+00:00 app[web.1]: Completed 500 Internal Server Error in 131ms 2012-12-11T18:10:43+00:00 app[web.1]: 2012-12-11T18:10:43+00:00 app[web.1]: 9: 2012-12-11T18:10:43+00:00 app[web.1]: 11: 2012-12-11T18:10:43+00:00 app[web.1]: ActionView::Template::Error (/app/app/assets/stylesheets/application.css has already been required): 2012-12-11T18:10:43+00:00 app[web.1]: 8: 2012-12-11T18:10:43+00:00 app[web.1]: 12: 2012-12-11T18:10:43+00:00 app[web.1]: 2012-12-11T18:10:43+00:00 app[web.1]: app/views/layouts/application.html.erb:10:in `_app_views_layouts_application_html_erb__2962376498821052289_32805880' 2012-12-11T18:10:43+00:00 app[web.1]: 2012-12-11T18:10:43+00:00 app[web.1]: 7: 2012-12-11T18:10:43+00:00 app[web.1]: 13: 2012-12-11T18:10:43+00:00 app[web.1]: 10: "all" %> 2012-12-11T18:10:43+00:00 heroku[router]: at=info method=GET path=/ host=obscure-mesa-7065.herokuapp.com fwd=75.165.254.103 dyno=web.1 queue=0 wait=1ms connect=4ms service=257ms status=500 bytes=643
我不知道它为什么在localhost上工作，但似乎你有一个循环依赖。
转到app / assets / stylesheets并检查application.css.scss的标题，然后检查所需的所有文件的标题，以确保它们都不引用application.css.scss。