将 rails 应用程序从 3.2.3 迁移到 rails 4.0.0.rc2 后无法在 Heroku 上部署

Question

我最近将现有的 rails 3.2.3 应用程序迁移到 rails 4.0.0.rc2。我已经进行了所有必要的更改，并且能够使其在本地正常工作。但是当我将它推送到heroku - “git push heroku master”时，它说未能推送一些参考。以下是堆栈跟踪 -

-----> 编写 config/database.yml 以从 DATABASE_URL 读取 -----> 为 Rails 资产管道准备应用程序 运行：耙资产：预编译 耙中止！ 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_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.rc2/lib/active_record/connection_adapters/postgresql_adapter.rb:825:in initialize' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.rc2/lib/active_record/connection_adapters/postgresql_adapter.rb:825:innew' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.rc2/lib/active_record/connection_adapter/postgresql_adapter.rb:825:in connect' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.rc2/lib/active_record/connection_adapters/postgresql_adapter.rb:542:ininitialize' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.rc2/lib/active_record/connection_adapters/postgresql_adapter.rb:41:in new' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.rc2/lib/active_record/connection_adapters/postgresql_adapter.rb:41:inpostgresql_connection' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.rc2/lib/active_record/connection_adapters/abstract/connection_pool.rb:440:in new_connection' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.rc2/lib/active_record/connection_adapters/abstract/connection_pool.rb:450:incheckout_new_connection' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.rc2/lib/active_record/connection_adapters/abstract/connection_pool.rb:421:in acquire_connection' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.rc2/lib/active_record/connection_adapters/abstract/connection_pool.rb:356:inblock in checkout' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.rc2/lib/active_record/connection_adapters/abstract/connection_pool.rb:355:in checkout' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.rc2/lib/active_record/connection_adapters/abstract/connection_pool.rb:265:inblock in connection' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.rc2/lib/active_record/connection_adapters/abstract/connection_pool.rb:264:in connection' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.rc2/lib/active_record/connection_adapters/abstract/connection_pool.rb:546:inretrieve_connection' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.rc2/lib/active_record/connection_handling.rb:79:in retrieve_connection' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.rc2/lib/active_record/connection_handling.rb:53:inconnection' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0.rc2/lib/active_record/model_schema.rb:203:in table_exists?' /tmp/build_uqaojzpp3n68/lib/custom_active_record/domain_constants_pool.rb:13:inevaluate_constants' /tmp/build_uqaojzpp3n68/app/models/user_type.rb:4:in <class:UserType>' /tmp/build_uqaojzpp3n68/app/models/user_type.rb:1:in' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/dependencies.rb:228:in require' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/dependencies.rb:228:inblock in require' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/dependencies.rb:213:in load_dependency' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/dependencies.rb:228:inrequire' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/dependencies.rb:329:in require_or_load' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/dependencies.rb:462:inload_missing_constant' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/dependencies.rb:183:in const_missing' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/dependencies.rb:494:inload_missing_constant' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/dependencies.rb:183:in const_missing' /tmp/build_uqaojzpp3n68/app/models/user.rb:13:in' /tmp/build_uqaojzpp3n68/app/models/user.rb:1:in <top (required)>' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/dependencies.rb:228:inrequire' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/dependencies.rb:228:in block in require' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/dependencies.rb:213:inload_dependency' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/dependencies.rb:228:in require' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/dependencies.rb:329:inrequire_or_load' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/dependencies.rb:462:in load_missing_constant' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/dependencies.rb:183:inconst_missing' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/inflector/methods.rb:226:in const_get' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/inflector/methods.rb:226:inblock in constantize' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/inflector/methods.rb:224:in each' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/inflector/methods.rb:224:ininject' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/inflector/methods.rb:224:in constantize' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/dependencies.rb:534:inget' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/dependencies.rb:565:in constantize' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/devise-3.0.0.rc/lib/devise.rb:274:inget' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/devise-3.0.0.rc/lib/devise/mapping.rb:77:in to' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/devise-3.0.0.rc/lib/devise/mapping.rb:72:inmodules' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/devise-3.0.0.rc/lib/devise/mapping.rb:89:in routes' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/devise-3.0.0.rc/lib/devise/mapping.rb:156:indefault_used_route' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/devise-3.0.0.rc/lib/devise/mapping.rb:66:in initialize' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/devise-3.0.0.rc/lib/devise.rb:308:innew' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/devise-3.0.0.rc/lib/devise.rb:308:in add_mapping' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/devise-3.0.0.rc/lib/devise/rails/routes.rb:208:inblock in devise_for' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/devise-3.0.0.rc/lib/devise/rails/routes.rb:207:in each' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/devise-3.0.0.rc/lib/devise/rails/routes.rb:207:indevise_for' /tmp/build_uqaojzpp3n68/config/routes.rb:55:in block in <top (required)>' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/actionpack-4.0.0.rc2/lib/action_dispatch/routing/route_set.rb:316:ininstance_exec' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/actionpack-4.0.0.rc2/lib/action_dispatch/routing/route_set.rb:316:in eval_block' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/actionpack-4.0.0.rc2/lib/action_dispatch/routing/route_set.rb:294:indraw' /tmp/build_uqaojzpp3n68/config/routes.rb:1:in <top (required)>' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/dependencies.rb:222:inload' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/dependencies.rb:222:in block in load' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/dependencies.rb:213:inload_dependency' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/dependencies.rb:222:in load' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.rc2/lib/rails/application/routes_reloader.rb:40:inblock in load_paths' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.rc2/lib/rails/application/routes_reloader.rb:40:in each' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.rc2/lib/rails/application/routes_reloader.rb:40:inload_paths' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.rc2/lib/rails/application/routes_reloader.rb:16:in reload!' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.rc2/lib/rails/application/routes_reloader.rb:26:inblock in updater' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/file_update_checker.rb:75:in call' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/file_update_checker.rb:75:inexecute' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.rc2/lib/rails/application/routes_reloader.rb:27:in updater' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.rc2/lib/rails/application/routes_reloader.rb:6:inexecute_if_updated' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.rc2/lib/rails/application/finisher.rb:69:in block in <module:Finisher>' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.rc2/lib/rails/initializable.rb:30:ininstance_exec' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.rc2/lib/rails/initializable.rb:30:in run' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.rc2/lib/rails/initializable.rb:55:inblock in run_initializers' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.rc2/lib/rails/initializable.rb:54:in run_initializers' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.rc2/lib/rails/application.rb:215:ininitialize！ /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.rc2/lib/rails/railtie/configurable.rb:30:in method_missing' /tmp/build_uqaojzpp3n68/config/environment.rb:5:in' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/dependencies.rb:228:in require' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/dependencies.rb:228:inblock in require' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/dependencies.rb:213:in load_dependency' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0.rc2/lib/active_support/dependencies.rb:228:inrequire' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.rc2/lib/rails/application.rb:189:in require_environment!' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0.rc2/lib/rails/application.rb:249:inblock in run_tasks_blocks' /tmp/build_uqaojzpp3n68/vendor/bundle/ruby/2.0.0/gems/sprockets-rails-2.0.0/lib/sprockets/rails/task.rb:54:in `block (2 levels) in define' 任务：TOP => 环境 （通过使用 --trace 运行任务查看完整跟踪） ！ ！预编译资产失败。 ！

！ Push 被拒绝，无法编译 Ruby/Rails 应用

我也在本地使用 postgres，它工作正常。这个应用程序以前部署在 heroku 上。我在 Gemfile 中添加了 ruby​​ 2.0.0，日志表明他们正在使用 ruby​​ 2.0.0。我不知道如何调试这个。将 heroku 上的现有应用程序迁移到 4.0.0 是否需要任何其他更改。 任何帮助，将不胜感激。 提前致谢。

Answer 1

您的问题是在 slug 编译期间，您的应用程序无法使用环境变量。尝试安装 user-env-compile 实验室功能。