编辑：其他人有什么建议吗？我完全难过了!!!
我有一个应用程序，其中所有资产编译得很好但在第二个应用程序中，当我运行时：
RAILS_ENV=production rake assets:precompile --trace
我收到以下消息：未定义的方法`目录？'为零：NilClass
请帮忙。当我查看public / assets目录时，我看到图像文件已经预编译但没有js或css文件。
以下是完整的终端输出：
=> RAILS_ENV=production rake assets:precompile --trace
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@lasource/gems/rack-1.3.4/lib/rack/backports/uri/common_192.rb:53: warning: already initialized constant WFKV_
** Invoke assets:precompile (first_time)
** Execute assets:precompile
/Users/swamiatma/.rvm/rubies/ruby-1.9.2-p290/bin/ruby /Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@lasource/bin/rake assets:precompile:all RAILS_ENV=production RAILS_GROUPS=assets --trace
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@lasource/gems/rack-1.3.4/lib/rack/backports/uri/common_192.rb:53: warning: already initialized constant WFKV_
** 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!
undefined method `directory?' for nil:NilClass
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@lasource/gems/sprockets-2.0.2/lib/sprockets/base.rb:122:in `block in each_entry'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@lasource/gems/sprockets-2.0.2/lib/sprockets/base.rb:118:in `each'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@lasource/gems/sprockets-2.0.2/lib/sprockets/base.rb:118:in `each_entry'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@lasource/gems/sprockets-2.0.2/lib/sprockets/base.rb:137:in `block in each_file'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@lasource/gems/sprockets-2.0.2/lib/sprockets/base.rb:136:in `each'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@lasource/gems/sprockets-2.0.2/lib/sprockets/base.rb:136:in `each_file'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@lasource/gems/sprockets-2.0.2/lib/sprockets/base.rb:149:in `each_logical_path'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@lasource/gems/actionpack-3.1.1/lib/sprockets/static_compiler.rb:18:in `compile'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@lasource/gems/actionpack-3.1.1/lib/sprockets/assets.rake:52:in `internal_precompile'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@lasource/gems/actionpack-3.1.1/lib/sprockets/assets.rake:66:in `block (3 levels) in <top (required)>'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/task.rb:205:in `call'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/task.rb:205:in `block in execute'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/task.rb:200:in `each'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/task.rb:200:in `execute'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/task.rb:158:in `block in invoke_with_call_chain'
/Users/swamiatma/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/task.rb:144:in `invoke'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@lasource/gems/actionpack-3.1.1/lib/sprockets/assets.rake:56:in `block (3 levels) in <top (required)>'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/task.rb:205:in `call'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/task.rb:205:in `block in execute'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/task.rb:200:in `each'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/task.rb:200:in `execute'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/task.rb:158:in `block in invoke_with_call_chain'
/Users/swamiatma/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/task.rb:144:in `invoke'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/application.rb:112:in `invoke_task'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/application.rb:90:in `block (2 levels) in top_level'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/application.rb:90:in `each'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/application.rb:90:in `block in top_level'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/application.rb:129:in `standard_exception_handling'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/application.rb:84:in `top_level'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/application.rb:62:in `block in run'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/application.rb:129:in `standard_exception_handling'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/application.rb:59:in `run'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/bin/rake:32:in `<top (required)>'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@lasource/bin/rake:19:in `load'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@lasource/bin/rake:19:in `<main>'
Tasks: TOP => assets:precompile:primary
rake aborted!
Command failed with status (1): [/Users/swamiatma/.rvm/rubies/ruby-1.9.2-p2...]
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/file_utils.rb:53:in `block in create_shell_runner'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/file_utils.rb:45:in `call'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/file_utils.rb:45:in `sh'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/file_utils_ext.rb:36:in `sh'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/file_utils.rb:78:in `ruby'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/file_utils_ext.rb:36:in `ruby'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@lasource/gems/actionpack-3.1.1/lib/sprockets/assets.rake:9:in `ruby_rake_task'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@lasource/gems/actionpack-3.1.1/lib/sprockets/assets.rake:17:in `invoke_or_reboot_rake_task'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@lasource/gems/actionpack-3.1.1/lib/sprockets/assets.rake:25:in `block (2 levels) in <top (required)>'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/task.rb:205:in `call'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/task.rb:205:in `block in execute'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/task.rb:200:in `each'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/task.rb:200:in `execute'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/task.rb:158:in `block in invoke_with_call_chain'
/Users/swamiatma/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/task.rb:144:in `invoke'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/application.rb:112:in `invoke_task'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/application.rb:90:in `block (2 levels) in top_level'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/application.rb:90:in `each'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/application.rb:90:in `block in top_level'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/application.rb:129:in `standard_exception_handling'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/application.rb:84:in `top_level'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/application.rb:62:in `block in run'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/application.rb:129:in `standard_exception_handling'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/application.rb:59:in `run'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/bin/rake:32:in `<top (required)>'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@lasource/bin/rake:19:in `load'
/Users/swamiatma/.rvm/gems/ruby-1.9.2-p290@lasource/bin/rake:19:in `<main>'
Tasks: TOP => assets:precompile
答案 0 :(得分：6)
感谢phoet：我刚刚在begin..rescue处用.bundle/ruby/1.9.1/gems/sprockets-2.0.2/lib/sprockets/base.rb块包围了这些行。该错误是由无效的符号链接引起的（仅在使用rails 3.1.1 sprockets 2.0.2的生产环境中，另外机架1.3.4引起constant WFKV_警告，但机架1.3.3没有
120 paths << path
121 begin
122 if stat(path).directory?
123 each_entry(path) do |subpath|
124 paths << subpath
125 end
126 end
127 rescue
128 puts "error with directory #{path}"
129 end
现在错误已经消失，bundle exec rake assets:precompile --trace即将结束，但在tmp之后的最后两步** Execute assets:precompile:primary需要一个永恒：cache：clear ...我们会看到;）
答案 1 :(得分：3)
感谢Phoet的建议，我在sprockets的基本文件中添加了一个puts语句，这给了我一个罪魁祸首文件。这是一个ckeditor js文件。我已将ckeditor移动到公共目录中的管道之外，但此文件以某种方式被要求包含。我还是不知道为什么。但我在assets / javascripts目录中放了一个虚拟的ckeditor.js文件，这足以解决我的问题。