编辑：还有其他任何建议吗？我完全被骗了！
我有一个应用程序,其中所有的资产编译很好,但在这第二个应用程序,当我运行：
RAILS_ENV=production rake assets:precompile --trace
我收到以下消息：undefined方法`目录？’为nil：NilClass
请帮忙.当我查看公共/资产目录下时,我看到图像文件已被预编译,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
解决方法
感谢phoet：我刚刚在.bundle / ruby / 1.9.1 / gems / sprockets-2.0.2 / lib / sprockets / base.rb上用一个begin..rescue块包围了这些行.错误是由无效的符号链接引起的(仅在生产环境中使用导轨3.1.1链轮2.0.2,另外机架1.3.4导致恒定的WFKV_警告,但机架1.3.3不)
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,捆绑exec rake资产：precompile –trace结束,但需要在最后两个步骤永恒**执行资产：precompile：主要在tmp之后：缓存：清除…我们将看到;)