Heroku预编译资产在Rail 4应用程序上失败 [英] Heroku precompile assets failed on Rail 4 app
本文介绍了Heroku预编译资产在Rail 4应用程序上失败的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我设置了
config.assets.initialize_on_precompile = false
。通过运行本地成功预编译资源
RAILS_ENV =生产捆绑包exec rake资产：预编译
虽然manifest-fingerprint.json（Rails 4.0生成manifest.json而不是manifest.yml）在推送到Heroku时未被检测到，Heroku尝试再次运行预编译。然后我得到了这样的错误：
运行：rake assets：预编译
rake中止！
无法连接到服务器：连接被拒绝
服务器是否在主机127.0.0.1上运行并接受端口5432上的
TCP / IP连接？
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/connection_adapters/postgresql_adapter.rb:771:in`initialize'
/ tmp / build_2ospgf61r6sch / vendor / bundle / ruby / 2.0.0 / gems / activerecord-4.0.0.beta1 / lib / active_record / connection_adapters / postgresql_adapter.rb：771：在`new'
/ tmp / build_2ospgf61r6sch / vendor /bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/connection_adapters/postgresql_adapter.rb:771:in`connect'
/ tmp / build_2ospgf61r6sch / vendor / bundle / ruby / 2.0.0 / gems / activerecord-4.0.0.beta1 / lib / active_record / connection_adapters / postgresql_adapter.rb：493：in`initialize'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems /activerecord-4.0.0.beta1/lib/active_record/connection_adapters/postgresql_adapter.rb:41:in`new'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0。 0.beta1 / LIB / active_record / connection_adapters / postgresql_adapter .rb：41：在`postgresql_connection'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/connection_adapters/abstract/connection_pool.rb： 446：在`new_connection'中
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/connection_adapters/abstract/connection_pool.rb:456:in `checkout_new_connection'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/connection_adapters/abstract/connection_pool.rb:427:in`acquire_connection'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/connection_adapters/abstract/connection_pool.rb:364:in`block in checkout'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/connection_adapters/abstract/connection_pool.rb:363:in`checkout'
的/ tmp / build_2ospgf61r6s ch / vendor / bundle / ruby / 2.0.0 / gems / activerecord-4.0.0.beta1 / lib / active_record / connection_adapters / abstract / connection_pool.rb：273：在`block in connection'
/ tmp / build_2ospgf61r6sch /vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/connection_adapters/abstract/connection_pool.rb:272:in`connection'
/ tmp / build_2ospgf61r6sch / vendor / bundle / ruby / 2.0.0 / gems / activerecord-4.0.0.beta1 / lib / active_record / connection_adapters / abstract / connection_pool.rb：552：in'retrieve_connection'
/ tmp / build_2ospgf61r6sch / vendor / bundle / ruby /2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/connection_handling.rb:79:in`retrieve_connection'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/ activerecord-4.0.0.beta1 / lib / active_record / connection_handling.rb：53：在`connection'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1 /lib/active_record/model_schema.rb:208:in`列'
/ t mp / build_2ospgf61r6sch / vendor / bundle / ruby / 2.0.0 / gems / activerecord-4.0.0.beta1 / lib / active_record / model_schema.rb：242：在`column_defaults'
/ tmp / build_2ospgf61r6sch / vendor / bundle /ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/locking/optimistic.rb:169:in`column_defaults'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0。 0 / gems / activerecord-4.0.0.beta1 / lib / active_record / core.rb：164：在`initialize'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0 .0.beta1 / lib / active_record / inheritance.rb：24：在`new'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/ active_record / inheritance.rb：24：`new'
/tmp/build_2ospgf61r6sch/lib/student_module.rb:11:in`acts_as_student'
/tmp/build_2ospgf61r6sch/app/models/applicant.rb： 4：在< class：Applicant>'
/tmp/build_2ospgf61r6sch/app/models/applicant.rb:3:in`< top（required）>'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.beta1/lib/active_support/dependencies.rb:228:in`require'
/ tmp / build_2ospgf61r6sch / vendor / bundle / ruby / 2.0.0 / gems / activesupport-4.0.0.beta1 / lib / active_support / dependencies.rb：228：在`block in require'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0 .0 / gems / activesupport-4.0.0.beta1 / lib / active_support / dependencies.rb：213：in`load_dependency'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activesupport- 4.0.0.beta1 / lib / active_support / dependencies.rb：228：在'require'中
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.beta1/lib /active_support/dependencies.rb:329:in`require_or_load'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.beta1/lib/active_support/dependencies.rb： 288：在`depend_on'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.beta1/lib/active _support / dependencies.rb：206：在'require_dependency'中
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.beta1/lib/rails/engine.rb:464 ：在'eager_load！'的块（2级）'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.beta1/lib/rails/engine.rb:463 ：在`each'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.beta1/lib/rails/engine.rb:463:in`block in eager_load！ '
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.beta1/lib/rails/engine.rb:461:in`each'
/ tmp /build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.beta1/lib/rails/engine.rb:461:in`eager_load！'
/ tmp / build_2ospgf61r6sch / vendor / bundle /ruby/2.0.0/gems/railties-4.0.0.beta1/lib/rails/engine.rb:346:in`eager_load！'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0 /gems/railties-4.0.0.beta1/lib/rails/application/finisher.rb:56:in`each'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.beta1/lib/rails/application/finisher.rb:56:in`block in< module：Finisher>'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.beta1/lib/rails/initializable.rb:30:in`instance_exec'
/ tmp / build_2ospgf61r6sch / vendor / bundle / ruby / 2.0.0 / gems / railties-4.0.0.beta1 / lib / rails / initializable.rb：30：在`run'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0 .0 / gems / railties-4.0.0.beta1 / lib / rails / initializable.rb：55：在`block in run_initializers'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/ railties-4.0.0.beta1 / lib / rails / initializable.rb：54：在`run_initializers'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.beta1 /lib/rails/application.rb:213:in`initialize！'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.beta1/lib/rails/railtie `method_missing /configurable.rb:30:`
/tmp/build_2ospgf61r6sch/config/environment.rb:5:in`< top（required）>'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activesupport -4.0.0.beta1 / lib / active_support / dependencies.rb：228：在'require'中
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.beta1/ lib / active_support / dependencies.rb：228：在`block in require'中
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.beta1/lib/active_support/dependencies .rb：213：在`load_dependency'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.beta1/lib/active_support/dependencies.rb:228:in`需要'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.beta1/lib/rails/application.rb:187:in`require_environment！'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.beta1/lib/rails/application.rb:247:in`block in run_tasks_blocks'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/task.rb:246:in`call'
/ tmp / build_2ospgf61r6sch / vendor / bundle / ruby / 2.0.0 / gems / rake-10.0.4 / lib / rake / task.rb：246：在`block in execute'中
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems /rake-10.0.4/lib/rake/task.rb:241:in`each'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/ rake / task.rb：241：在`execute'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/task.rb:184:in `block in invoke_with_call_chain'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/task.rb:177:in`invoke_with_call_chain'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/task.rb:170:in`invoke'
/ tmp / build_2ospgf61r6sch / vendor / bundle / ruby / 2.0.0 / gems / sprockets-rails-2.0.0.rc4 / lib / sprockets / rails / task.rb：16：在'block（2 levels）in define'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/task.rb:246:in`call'
/ tmp / build_2ospgf61r6sch / vendor / bundle /ruby/2.0.0/gems/rake-10.0.4/lib/rake/task.rb:246:in`block in execute'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/ gems / rake-10.0.4 / lib / rake / task.rb：241：在`each'中
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib /rake/task.rb:241:in`execute'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/task.rb:184： in`block in invoke_with_call_chain'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/task.rb:177:in`invoke_with_call_chain'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/task.rb:205:in`block in invoke_prerequisites'
/ tmp / build_2ospgf61r6sch / vendor /bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/task.rb:203:in`each'
/ tmp / build _2spgf61r6sch / vendor / bundle / ruby / 2.0.0 / gems / rake-10.0.4 / lib / rake / task.rb：203：在`invoke_prerequisites'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0 .0 / gems / rake-10.0.4 / lib / rake / task.rb：183：在`block in invoke_with_call_chain'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake- 10.0.4 / lib / rake / task.rb：177：在`invoke_with_call_chain'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/task .rb：170：in`invoke'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/application.rb:143:in`invoke_task'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/application.rb:101:in'block（2 levels）in top_level'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/application.rb:101:in`each'
/ tmp / build_2ospgf61r6sch / vendor / bundle /ruby/2.0.0/gems/rake-10.0.4/lib/rake/application.rb:101:in`block in to p_level'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/application.rb:110:in`run_with_threads'
/ tmp / build_2ospgf61r6sch / vendor / bundle / ruby / 2.0.0 / gems / rake-10.0.4 / lib / rake / application.rb：95：in'top_level'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0 .0 / gems / rake-10.0.4 / lib / rake / application.rb：73：在`block in run'中
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake- 10.0.4 / lib / rake / application.rb：160：在`standard_exception_handling'
/tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/application .rb：70：在`run'中
看起来错误是由于lib /在config / initializers / student_init.rb中需要student_module.rb：
＃lib / student_module.rb，到这一行：
user_attributes = User.new.abttributes.keys
＃config / initializers / student_init.rb
require student_module'
ActiveRecord :: Base.extend Student
错误可能是因为Heroku初始化应用程序，其中包括连接到数据库。但我不应该看到像
rake中止的消息！
无法连接到服务器：连接被拒绝
服务器是否在主机127.0.0.1上运行并接受端口5432上的
TCP / IP连接？
因为我将config.assets.initialize_on_precompile设置为false，并且在本地预编译资产。
解决此问题的任何建议？谢谢！
实验室功能在Heroku的user-env-compile上，让编译时应用程序可以访问环境变量。
heroku labs：enable user-env-compile -a myapp
在 https://devcenter.heroku.com/articles/labs-user-env-compile
I set
config.assets.initialize_on_precompile = falsein the application.rb. Assets were precompiled successfully locally by run
RAILS_ENV=production bundle exec rake assets:precompileWhile the manifest-fingerprint.json(Rails 4.0 generates manifest.json instead of manifest.yml) was not detected when pushed to Heroku and Heroku tried to run precompile again. Then I got the error as:
Running: rake assets:precompile rake aborted! could not connect to server: Connection refused Is the server running on host "127.0.0.1" and accepting TCP/IP connections on port 5432? /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/connection_adapters/postgresql_adapter.rb:771:in `initialize' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/connection_adapters/postgresql_adapter.rb:771:in `new' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/connection_adapters/postgresql_adapter.rb:771:in `connect' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/connection_adapters/postgresql_adapter.rb:493:in `initialize' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/connection_adapters/postgresql_adapter.rb:41:in `new' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/connection_adapters/postgresql_adapter.rb:41:in `postgresql_connection' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/connection_adapters/abstract/connection_pool.rb:446:in `new_connection' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/connection_adapters/abstract/connection_pool.rb:456:in `checkout_new_connection' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/connection_adapters/abstract/connection_pool.rb:427:in `acquire_connection' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/connection_adapters/abstract/connection_pool.rb:364:in `block in checkout' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/connection_adapters/abstract/connection_pool.rb:363:in `checkout' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/connection_adapters/abstract/connection_pool.rb:273:in `block in connection' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/connection_adapters/abstract/connection_pool.rb:272:in `connection' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/connection_adapters/abstract/connection_pool.rb:552:in `retrieve_connection' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/connection_handling.rb:79:in `retrieve_connection' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/connection_handling.rb:53:in `connection' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/model_schema.rb:208:in `columns' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/model_schema.rb:242:in `column_defaults' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/locking/optimistic.rb:169:in `column_defaults' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/core.rb:164:in `initialize' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/inheritance.rb:24:in `new' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.beta1/lib/active_record/inheritance.rb:24:in `new' /tmp/build_2ospgf61r6sch/lib/student_module.rb:11:in `acts_as_student' /tmp/build_2ospgf61r6sch/app/models/applicant.rb:4:in `<class:Applicant>' /tmp/build_2ospgf61r6sch/app/models/applicant.rb:3:in `<top (required)>' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.beta1/lib/active_support/dependencies.rb:228:in `require' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.beta1/lib/active_support/dependencies.rb:228:in `block in require' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.beta1/lib/active_support/dependencies.rb:213:in `load_dependency' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.beta1/lib/active_support/dependencies.rb:228:in `require' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.beta1/lib/active_support/dependencies.rb:329:in `require_or_load' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.beta1/lib/active_support/dependencies.rb:288:in `depend_on' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.beta1/lib/active_support/dependencies.rb:206:in `require_dependency' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.beta1/lib/rails/engine.rb:464:in `block (2 levels) in eager_load!' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.beta1/lib/rails/engine.rb:463:in `each' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.beta1/lib/rails/engine.rb:463:in `block in eager_load!' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.beta1/lib/rails/engine.rb:461:in `each' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.beta1/lib/rails/engine.rb:461:in `eager_load!' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.beta1/lib/rails/engine.rb:346:in `eager_load!' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.beta1/lib/rails/application/finisher.rb:56:in `each' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.beta1/lib/rails/application/finisher.rb:56:in `block in <module:Finisher>' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.beta1/lib/rails/initializable.rb:30:in `instance_exec' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.beta1/lib/rails/initializable.rb:30:in `run' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.beta1/lib/rails/initializable.rb:55:in `block in run_initializers' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.beta1/lib/rails/initializable.rb:54:in `run_initializers' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.beta1/lib/rails/application.rb:213:in `initialize!' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.beta1/lib/rails/railtie/configurable.rb:30:in `method_missing' /tmp/build_2ospgf61r6sch/config/environment.rb:5:in `<top (required)>' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.beta1/lib/active_support/dependencies.rb:228:in `require' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.beta1/lib/active_support/dependencies.rb:228:in `block in require' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.beta1/lib/active_support/dependencies.rb:213:in `load_dependency' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.beta1/lib/active_support/dependencies.rb:228:in `require' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.beta1/lib/rails/application.rb:187:in `require_environment!' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.beta1/lib/rails/application.rb:247:in `block in run_tasks_blocks' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/task.rb:246:in `call' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/task.rb:246:in `block in execute' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/task.rb:241:in `each' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/task.rb:241:in `execute' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/task.rb:184:in `block in invoke_with_call_chain' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/task.rb:177:in `invoke_with_call_chain' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/task.rb:170:in `invoke' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/sprockets-rails-2.0.0.rc4/lib/sprockets/rails/task.rb:16:in `block (2 levels) in define' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/task.rb:246:in `call' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/task.rb:246:in `block in execute' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/task.rb:241:in `each' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/task.rb:241:in `execute' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/task.rb:184:in `block in invoke_with_call_chain' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/task.rb:177:in `invoke_with_call_chain' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/task.rb:205:in `block in invoke_prerequisites' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/task.rb:203:in `each' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/task.rb:203:in `invoke_prerequisites' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/task.rb:183:in `block in invoke_with_call_chain' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/task.rb:177:in `invoke_with_call_chain' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/task.rb:170:in `invoke' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/application.rb:143:in `invoke_task' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/application.rb:101:in `block (2 levels) in top_level' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/application.rb:101:in `each' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/application.rb:101:in `block in top_level' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/application.rb:110:in `run_with_threads' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/application.rb:95:in `top_level' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/application.rb:73:in `block in run' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/application.rb:160:in `standard_exception_handling' /tmp/build_2ospgf61r6sch/vendor/bundle/ruby/2.0.0/gems/rake-10.0.4/lib/rake/application.rb:70:in `run'Seems the error was due to the file in the lib/student_module.rb, which was required in config/initializers/student_init.rb:
#lib/student_module.rb, the error pointed to this line： user_attributes = User.new.abttributes.keys #config/initializers/student_init.rb require 'student_module' ActiveRecord::Base.extend StudentThe error could be because Heroku initializes the app, which includes connection to the database. But I was not supposed to see the messages like
rake aborted! could not connect to server: Connection refused Is the server running on host "127.0.0.1" and accepting TCP/IP connections on port 5432?because I set config.assets.initialize_on_precompile false and also precompile the assets locally.
Any suggestions to solve this?Thanks!
解决方案You'll need to enable a labs feature on Heroku user-env-compile which gives the app access to the environment variables at compile time.
heroku labs:enable user-env-compile -a myappRead more about it at https://devcenter.heroku.com/articles/labs-user-env-compile
这篇关于Heroku预编译资产在Rail 4应用程序上失败的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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