Ruby on Rails的资产预编译在Heroku

Question

失败，我有这个问题，当我试图推的Heroku我的错误是

/tmp/build_c6e60f96-b7c3-4985-b3e0-d97e3a8408a8/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0/lib/rails/initializable.rb:30:in `instance_exec' 
/tmp/build_c6e60f96-b7c3-4985-b3e0-d97e3a8408a8/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0/lib/rails/initializable.rb:30:in `run' 
/tmp/build_c6e60f96-b7c3-4985-b3e0-d97e3a8408a8/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0/lib/rails/initializable.rb:55:in `block in run_initializers' 
/tmp/build_c6e60f96-b7c3-4985-b3e0-d97e3a8408a8/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0/lib/rails/initializable.rb:54:in `run_initializers' 
/tmp/build_c6e60f96-b7c3-4985-b3e0-d97e3a8408a8/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0/lib/rails/application.rb:215:in `initialize!' 
/tmp/build_c6e60f96-b7c3-4985-b3e0-d97e3a8408a8/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0/lib/rails/railtie/configurable.rb:30:in `method_missing' 
/tmp/build_c6e60f96-b7c3-4985-b3e0-d97e3a8408a8/config/environment.rb:5:in `<top (required)>' 
/tmp/build_c6e60f96-b7c3-4985-b3e0-d97e3a8408a8/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `require' 
/tmp/build_c6e60f96-b7c3-4985-b3e0-d97e3a8408a8/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `block in require' 
/tmp/build_c6e60f96-b7c3-4985-b3e0-d97e3a8408a8/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:213:in `load_dependency' 
/tmp/build_c6e60f96-b7c3-4985-b3e0-d97e3a8408a8/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `require' 
/tmp/build_c6e60f96-b7c3-4985-b3e0-d97e3a8408a8/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0/lib/rails/application.rb:189:in `require_environment!' 
/tmp/build_c6e60f96-b7c3-4985-b3e0-d97e3a8408a8/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0/lib/rails/application.rb:249:in `block in run_tasks_blocks' 
/tmp/build_c6e60f96-b7c3-4985-b3e0-d97e3a8408a8/vendor/bundle/ruby/2.0.0/gems/sprockets-rails-2.0.1/lib/sprockets/rails/task.rb:54:in `block (2 levels) in define' 
Tasks: TOP => environment 
(See full trace by running task with --trace) 
! 
!  Precompiling assets failed. 
! 

!  Push rejected, failed to compile Ruby app 

Answer 1

precompiling-assets

在config/application.rb

Heroku的需要设置config.assets.initialize_on_precompile = flase这是假的

Answer 2

那么，如果您使用rails 4x，则不必更改Heroku的任何配置文件在所有。

所有你需要做的就是增加这种宝石：

gem 'rails_12factor', group: :production 

它会改变你的配置，以匹配您Heroku的要求。如果这不起作用，我会仔细检查我的application.css或application.js是否需要不存在的资产。尝试在本地编译您的资产。