我创建了一个打包为gem的完整引擎，允许我快速部署CSS，图像，JS / JQuery项目以及我所有项目共有的工作用户模型。在开发模式中，这一切都很巧妙。 但是，尝试预编译资产以用于生产会引发错误：
# RAILS_ENV=production bundle exec rake assets:precompile
/usr/local/bin/ruby /usr/local/bin/rake assets:precompile:all RAILS_ENV=production
RAILS_GROUPS=assets
rake aborted!
couldn't find file 'my_stock.engine'
(in my_example_app/app/assets/javascripts/application.js:17)
Tasks: TOP => assets:precompile:primary
(See full trace by running task with --trace)
rake aborted!
Command failed with status (1): [/usr/local/bin/ruby /usr/local/bin/rake as...]
Tasks: TOP => assets:precompile
(See full trace by running task with --trace)
我花了一些时间在此问题上进行网络搜索，但没有发现任何明显相关的内容。我希望我只是忘记在设置'my_stock.engine'或my_example_app时做某事，因为这是我第一次尝试做这样的事情。
编辑：添加 - 追踪结果
** Invoke assets:precompile (first_time)
** Execute assets:precompile
/usr/local/bin/ruby /usr/local/bin/rake assets:precompile:all RAILS_ENV=production RAILS_GROUPS=assets --trace
** Invoke assets:precompile:all (first_time)
** Execute assets:precompile:all
** Invoke assets:precompile:primary (first_time)
** Invoke assets:environment (first_time)
** Execute assets:environment
** Invoke environment (first_time)
** Execute environment
** Invoke tmp:cache:clear (first_time)
** Execute tmp:cache:clear
** Execute assets:precompile:primary
rake aborted!
couldn't find file 'my_stock.engine'
(in /opt/bv_applets/meetme_manager/app/assets/javascripts/application.js:17)
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/context.rb:102:in `resolve'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/context.rb:142:in `require_asset'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/directive_processor.rb:215:in `process_require_directive'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/directive_processor.rb:165:in `block in process_directives'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/directive_processor.rb:163:in `each'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/directive_processor.rb:163:in `process_directives'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/directive_processor.rb:97:in `evaluate'
/usr/local/lib/ruby/gems/1.9.1/gems/tilt-1.4.1/lib/tilt/template.rb:103:in `render'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/context.rb:193:in `block in evaluate'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/context.rb:190:in `each'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/context.rb:190:in `evaluate'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/processed_asset.rb:12:in `initialize'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/base.rb:249:in `new'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/base.rb:249:in `block in build_asset'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/base.rb:270:in `circular_call_protection'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/base.rb:248:in `build_asset'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/index.rb:93:in `block in build_asset'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/caching.rb:19:in `cache_asset'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/index.rb:92:in `build_asset'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/base.rb:169:in `find_asset'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/index.rb:60:in `find_asset'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/bundled_asset.rb:16:in `initialize'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/base.rb:252:in `new'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/base.rb:252:in `build_asset'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/index.rb:93:in `block in build_asset'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/caching.rb:19:in `cache_asset'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/index.rb:92:in `build_asset'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/base.rb:169:in `find_asset'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/index.rb:60:in `find_asset'
/usr/local/lib/ruby/gems/1.9.1/gems/actionpack-3.2.13/lib/sprockets/static_compiler.rb:19:in `block in compile'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/base.rb:219:in `block in each_logical_path'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/base.rb:206:in `block (2 levels) in each_file'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/base.rb:196:in `each'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/base.rb:196:in `each_entry'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/base.rb:204:in `block in each_file'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/base.rb:203:in `each'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/base.rb:203:in `each_file'
/usr/local/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/base.rb:217:in `each_logical_path'
/usr/local/lib/ruby/gems/1.9.1/gems/actionpack-3.2.13/lib/sprockets/static_compiler.rb:18:in `compile'
/usr/local/lib/ruby/gems/1.9.1/gems/actionpack-3.2.13/lib/sprockets/assets.rake:56:in `internal_precompile'
/usr/local/lib/ruby/gems/1.9.1/gems/actionpack-3.2.13/lib/sprockets/assets.rake:70:in `block (3 levels) in <top (required)>'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:236:in `call'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:236:in `block in execute'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:231:in `each'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:231:in `execute'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:175:in `block in invoke_with_call_chain'
/usr/local/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:168:in `invoke_with_call_chain'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:161:in `invoke'
/usr/local/lib/ruby/gems/1.9.1/gems/actionpack-3.2.13/lib/sprockets/assets.rake:60:in `block (3 levels) in <top (required)>'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:236:in `call'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:236:in `block in execute'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:231:in `each'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:231:in `execute'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:175:in `block in invoke_with_call_chain'
/usr/local/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:168:in `invoke_with_call_chain'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:161:in `invoke'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/application.rb:149:in `invoke_task'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/application.rb:106:in `block (2 levels) in top_level'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/application.rb:106:in `each'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/application.rb:106:in `block in top_level'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/application.rb:115:in `run_with_threads'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/application.rb:100:in `top_level'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/application.rb:78:in `block in run'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/application.rb:165:in `standard_exception_handling'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/application.rb:75:in `run'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/bin/rake:33:in `<top (required)>'
/usr/local/bin/rake:23:in `load'
/usr/local/bin/rake:23:in `<main>'
Tasks: TOP => assets:precompile:primary
rake aborted!
Command failed with status (1): [/usr/local/bin/ruby /usr/local/bin/rake as...]
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/file_utils.rb:55:in `block in create_shell_runner'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/file_utils.rb:45:in `call'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/file_utils.rb:45:in `sh'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/file_utils_ext.rb:37:in `sh'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/file_utils.rb:82:in `ruby'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/file_utils_ext.rb:37:in `ruby'
/usr/local/lib/ruby/gems/1.9.1/gems/actionpack-3.2.13/lib/sprockets/assets.rake:12:in `ruby_rake_task'
/usr/local/lib/ruby/gems/1.9.1/gems/actionpack-3.2.13/lib/sprockets/assets.rake:21:in `invoke_or_reboot_rake_task'
/usr/local/lib/ruby/gems/1.9.1/gems/actionpack-3.2.13/lib/sprockets/assets.rake:29:in `block (2 levels) in <top (required)>'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:236:in `call'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:236:in `block in execute'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:231:in `each'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:231:in `execute'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:175:in `block in invoke_with_call_chain'
/usr/local/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:168:in `invoke_with_call_chain'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:161:in `invoke'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/application.rb:149:in `invoke_task'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/application.rb:106:in `block (2 levels) in top_level'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/application.rb:106:in `each'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/application.rb:106:in `block in top_level'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/application.rb:115:in `run_with_threads'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/application.rb:100:in `top_level'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/application.rb:78:in `block in run'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/application.rb:165:in `standard_exception_handling'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/application.rb:75:in `run'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-10.1.0/bin/rake:33:in `<top (required)>'
/usr/local/bin/rake:23:in `load'
/usr/local/bin/rake:23:in `<main>'
Tasks: TOP => assets:precompile
/ EDIT
EDIT2：进一步挖掘和审查错误和配置：
my_example_app /应用/资产/ Javascript角/ application.js中
13: //= require jquery
14: //= require jquery_ujs
15: //= require jquery.ui.datepicker
16: //= require_tree .
17: //= require my_stock.engine
Rails资产管道配置路径：
$ be rails c
------
Loading development environment (Rails 3.2.13)
1.9.3-p392 :001 > y Rails.application.config.assets.paths
---
- /my_example_app/app/assets/images
- /my_example_app/app/assets/javascripts
- /my_example_app/app/assets/stylesheets
- /my_example_app/vendor/assets/javascripts
- /my_example_app/vendor/assets/stylesheets
- /.rvm/gems/ruby-1.9.3-p392/gems/jquery-rails-3.0.4/vendor/assets/javascripts
- /.rvm/gems/ruby-1.9.3-p392/gems/jquery-ui-rails-4.0.3/app/assets/images
- /.rvm/gems/ruby-1.9.3-p392/gems/jquery-ui-rails-4.0.3/app/assets/javascripts
- /.rvm/gems/ruby-1.9.3-p392/gems/jquery-ui-rails-4.0.3/app/assets/stylesheets
- /.rvm/gems/ruby-1.9.3-p392/gems/twitter-bootstrap-rails-2.2.7/app/assets/fonts
- /.rvm/gems/ruby-1.9.3-p392/gems/twitter-bootstrap-rails-2.2.7/app/assets/images
- /.rvm/gems/ruby-1.9.3-p392/gems/twitter-bootstrap-rails-2.2.7/app/assets/javascripts
- /.rvm/gems/ruby-1.9.3-p392/gems/twitter-bootstrap-rails-2.2.7/app/assets/stylesheets
- /.rvm/gems/ruby-1.9.3-p392/gems/coffee-rails-3.2.2/lib/assets/javascripts
- /.rvm/gems/ruby-1.9.3-p392/gems/bootstrap-sass-2.3.2.1/vendor/assets/images
- /.rvm/gems/ruby-1.9.3-p392/gems/bootstrap-sass-2.3.2.1/vendor/assets/javascripts
- /.rvm/gems/ruby-1.9.3-p392/gems/bootstrap-sass-2.3.2.1/vendor/assets/stylesheets
- /my_stock.engine/app/assets/images
- /my_stock.engine/app/assets/javascripts
- /my_stock.engine/app/assets/stylesheets
=> nil
1.9.3-p392 :002 > exit
...所以“my_stock.engine”位于资产路径中。
/ EDIT2
预先感谢您提供任何/所有帮助＆amp;建议！
答案 0 :(得分：0)
您需要问自己几个问题。您是否正确设置了引擎。我没有涉及自己设置Rails引擎，但已经阅读了ruby on rails guide：adding assets to your gems。它强调：
此gem包含一个继承自Rails :: Engine的引擎类。通过这样做，Rails被告知此gem的目录可能包含资产，并且此引擎的app / assets，lib / assets和vendor / assets目录被添加到Sprockets的搜索路径中。
您可以自己看到：jQuery-rails。我对上面引用的理解告诉我，通过让你的引擎类继承Rails引擎，你应该继承所有Rails方法，并且它会告诉目录它可以包含资产。
此外，在预编译时需要考虑的另一件事是它还说明了：
对于更快的资产预编译，您可以通过在config / application.rb中将config.assets.initialize_on_precompile设置为false来部分加载应用程序，但在这种情况下，模板无法查看应用程序对象或方法。 Heroku要求这是假的。
这提出的另一个警告是我认为发生在你身上的以下内容：
如果将config.assets.initialize_on_precompile设置为false，请确保测试rake资产：在部署之前在本地进行预编译。它可能会暴露您的资产引用应用程序对象或方法的错误，因为无论此标志的值如何，它们仍处于开发模式的范围内。更改此标志也会影响引擎。引擎也可以为预编译定义资产。由于未加载完整的环境，因此不会加载引擎（或其他宝石），这可能导致丢失资产。
您可以在上面的引文中看到1）将此设置为false可能会导致错误，因此您应该在本地进行测试。除此之外，它指出它会影响发动机。
主要部分
引擎也可以为预编译定义资产。由于未加载完整的环境，因此不会加载引擎（或其他宝石），这可能导致丢失资产。
所以说这一切我相信如果你将config.assets.intialize_on_precompile设置为false，那么你的应用程序就没有启动。我希望这会有所帮助，因为我确实从中学到了一些东西。
更新了答案
根据您在应用程序中包含引擎的方式，正确指定路径非常重要。由于跟踪中的错误消息表明它可能不在您的应用程序中。请检查两条路径中是否有my_stock_engine.js
app/assets/javascript/my_stock_engine.js
app/vendor/assets/javascript/my_stock_engine.js
app/lib/assets/my_stock_engine.js
my_stock_engine/app/assets/javascript/my_stock_engine.js
在你的Gemfile中，它还说明了你如何添加它，最有可能是via path: '/some/path'
答案 1 :(得分：0)
我一直在尝试创建一个包含一些自定义javascript插件的gem的相同动作。您的问题似乎是您的引擎gem未正确包含在示例应用程序gemfile中和/或引擎gem未正确安装在gem repo中。您使用gem install mystock.engine-0.0.1.gem或类似内容，然后在示例应用中bundle install --local了吗？这将确保您的自定义引擎在本地安装，然后进入您的示例应用程序。如果是这种情况，我希望看到您的引擎资产列在'/.rvm/gems/'路径下面，就像您的gemfile中的其他宝石一样。祝你好运！