Heroku上传 - 预编译资产失败

Question

我需要帮助.当我尝试将我的应用程序上传到heroku时,我收到此错误,有人知道为什么吗？有些是错的.谢谢

       Using rake (10.1.0)
       ...
       Using tlsmail (0.0.1)
       Using uglifier (2.1.2)
       Your bundle is complete! It was installed into ./vendor/bundle
-----> Writing config/database.yml to read from DATABASE_URL
-----> Preparing app for Rails asset pipeline
       Running: rake assets:precompile
       /tmp/build_e8889be5-168c-49ed-81e7-b71061fc82ee/vendor/bundle/ruby/1.9.1/gems/tlsmail-0.0.1/lib/net/smtp.rb:806: warning: already initialized constant SMTPSession
       ...
       /tmp/build_e8889be5-168c-49ed-81e7-b71061fc82ee/vendor/bundle/ruby/1.9.1/gems/tlsmail-0.0.1/lib/net/pop.rb:702: warning: already initialized constant APOPSession
       DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /tmp/build_e8889be5-168c-49ed-81e7-b71061fc82ee/Rakefile:7)
       ...
       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_e8889be5-168c-49ed-81e7-b71061fc82ee/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.12/lib/active_record/connection_adapters/postgresql_adapter.rb:1208:in `initialize'
       /tmp/build_e8889be5-168c-49ed-81e7-b71061fc82ee/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.12/lib/active_record/connection_adapters/postgresql_adapter.rb:1208:in `new'
       ...
       /tmp/build_e8889be5-168c-49ed-81e7-b71061fc82ee/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.12/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.

Answer 1

来自Heroku文档:

这意味着您的应用程序正在尝试作为rake资产的一部分连接到数据库:预编译.由于配置变量不存在于环境中,因此我们使用占位符DATABASE_URL来满足Rails.

要解决此问题,请确保以下行显示在config/application.rb:

# config/application.rb
config.assets.initialize_on_precompile = false

添加后,提交您的更改并重新部署到Heroku - 您的资产应该编译,而您的应用程序不会尝试连接到数据库,这应该可以解决您正在目睹的错误.

更新:

stacktrace的第46行包含以下消息:Devise.secret_key was not set.

根据 Devise的作者JoséValim的说法,这个问题可以通过以下方式解决:

请将以下内容添加到您的Devise初始化程序中:

config.secret_key =' - 密钥 - '

或者,以下解决方案似乎适用于许多用户:

我去了routes.rb文件并注释掉了devise_for:installs行

然后我回去并重新设计了rails generate:install.如果这不起作用,请使用以前版本的设计,编辑Gemfile对Devise的引用,如下所示:gem'devise','3.0.3'然后按照我上面提到的步骤操作.

Answer 2

有一些事情可以帮我解决这个问题:

# config/application.rb
config.assets.initialize_on_precompile = false

然后,在我部署之前,我在本地编译了我的资产并提交了它们:

RAILS_ENV=production bundle exec rake assets:precompile

另外,我安装了这个heroku add,正如我发布的应用程序所指定的那样(在我的情况下,Spree commerce)

heroku labs:enable user-env-compile -a myapp

当然,请确保将database.yml文件设置为使用adapter: postgresql.

承诺所有这一切,推送到heroku,并希望它将启动.如果您仍然无法打开您的应用,请尝试查看Heroku日志:heroku logs -n 500

我仍然需要迁移我的数据库 heroku run rake db:migrate