更新耙寶石10.0.3輸出錯誤推向Heroku時？

Question

在我的Rails應用程序中，我剛從0.9.2.2更新了rake gem。到10.0.3，並從1.4.1架到1.4.3。

此前更新的寶石，當我做了git push到的Heroku我的輸出將只是看起來像這樣：

-----> Writing config/database.yml to read from DATABASE_URL 
-----> Preparing app for Rails asset pipeline 
     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? 
     Tasks: TOP => environment 
     (See full trace by running task with --trace) 
     Precompiling assets failed, enabling runtime asset compilation 
     Injecting rails31_enable_runtime_asset_compilation 
     Please see this article for troubleshooting help: 
     http://devcenter.heroku.com/articles/rails31_heroku_cedar#troubleshooting 

（不涉及資產預編譯失敗，我知道這是爲什麼發生的事情）

但現在更新後的寶石，當我推到Heroku的我得到這個錯誤：

-----> Writing config/database.yml to read from DATABASE_URL 
-----> Preparing app for Rails asset pipeline 
     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_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.6/lib/active_record/connection_adapters/postgresql_adapter.rb:1206:in `initialize' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.6/lib/active_record/connection_adapters/postgresql_adapter.rb:1206:in `new' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.6/lib/active_record/connection_adapters/postgresql_adapter.rb:1206:in `connect' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.6/lib/active_record/connection_adapters/postgresql_adapter.rb:329:in `initialize' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.6/lib/active_record/connection_adapters/postgresql_adapter.rb:28:in `new' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.6/lib/active_record/connection_adapters/postgresql_adapter.rb:28:in `postgresql_connection' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.6/lib/active_record/connection_adapters/abstract/connection_pool.rb:309:in `new_connection' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.6/lib/active_record/connection_adapters/abstract/connection_pool.rb:319:in `checkout_new_connection' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.6/lib/active_record/connection_adapters/abstract/connection_pool.rb:241:in `block (2 levels) in checkout' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.6/lib/active_record/connection_adapters/abstract/connection_pool.rb:236:in `loop' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.6/lib/active_record/connection_adapters/abstract/connection_pool.rb:236:in `block in checkout' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.6/lib/active_record/connection_adapters/abstract/connection_pool.rb:233:in `checkout' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.6/lib/active_record/connection_adapters/abstract/connection_pool.rb:96:in `block in connection' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.6/lib/active_record/connection_adapters/abstract/connection_pool.rb:95:in `connection' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.6/lib/active_record/connection_adapters/abstract/connection_pool.rb:404:in `retrieve_connection' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.6/lib/active_record/connection_adapters/abstract/connection_specification.rb:168:in `retrieve_connection' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.6/lib/active_record/connection_adapters/abstract/connection_specification.rb:142:in `connection' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.6/lib/active_record/model_schema.rb:308:in `clear_cache!' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.6/lib/active_record/railtie.rb:97:in `block (2 levels) in <class:Railtie>' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.6/lib/active_support/callbacks.rb:418:in `_run__769451004690509272__prepare__527462282276125186__callbacks' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.6/lib/active_support/callbacks.rb:405:in `__run_callback' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.6/lib/active_support/callbacks.rb:385:in `_run_prepare_callbacks' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.6/lib/active_support/callbacks.rb:81:in `run_callbacks' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.6/lib/action_dispatch/middleware/reloader.rb:74:in `prepare!' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.6/lib/action_dispatch/middleware/reloader.rb:48:in `prepare!' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/railties-3.2.6/lib/rails/application/finisher.rb:47:in `block in <module:Finisher>' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/railties-3.2.6/lib/rails/initializable.rb:30:in `instance_exec' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/railties-3.2.6/lib/rails/initializable.rb:30:in `run' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/railties-3.2.6/lib/rails/initializable.rb:55:in `block in run_initializers' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/railties-3.2.6/lib/rails/initializable.rb:54:in `each' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/railties-3.2.6/lib/rails/initializable.rb:54:in `run_initializers' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/railties-3.2.6/lib/rails/application.rb:136:in `initialize!' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/railties-3.2.6/lib/rails/railtie/configurable.rb:30:in `method_missing' 
     /tmp/build_15ju6av9wl7bb/config/environment.rb:5:in `<top (required)>' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.6/lib/active_support/dependencies.rb:251:in `require' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.6/lib/active_support/dependencies.rb:251:in `block in require' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.6/lib/active_support/dependencies.rb:236:in `load_dependency' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.6/lib/active_support/dependencies.rb:251:in `require' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/railties-3.2.6/lib/rails/application.rb:103:in `require_environment!' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/railties-3.2.6/lib/rails/application.rb:292:in `block (2 levels) in initialize_tasks' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.6/lib/sprockets/assets.rake:93:in `block (2 levels) in <top (required)>' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.6/lib/sprockets/assets.rake:60:in `block (3 levels) in <top (required)>' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.6/lib/sprockets/assets.rake:23:in `invoke_or_reboot_rake_task' 
     /tmp/build_15ju6av9wl7bb/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.6/lib/sprockets/assets.rake:29:in `block (2 levels) in <top (required)>' 
     Tasks: TOP => environment 
     (See full trace by running task with --trace) 
     Precompiling assets failed, enabling runtime asset compilation 
     Injecting rails31_enable_runtime_asset_compilation 
     Please see this article for troubleshooting help: 
     http://devcenter.heroku.com/articles/rails31_heroku_cedar#troubleshooting 

這到底是怎麼回事？這是我需要解決的問題嗎？該應用程序似乎仍然運行良好，但我想知道至少是什麼導致了錯誤。在10.0.3版本中耙子更加冗長嗎？

Answer 1

它看起來像更新版本的耙是更詳細。如果你不需要訪問數據庫編譯您的資產（通常你不會），您可以添加

config.assets.initialize_on_precompile = false 

到config/application.rb。

請參閱https://devcenter.heroku.com/articles/rails3x-asset-pipeline-cedar瞭解更多信息。