Heroku 上的预编译失败，initialize_on_precompile 设置为 false

Question

我正在尝试将一个应用部署到 Heroku 的 cedar 堆栈。

在部署的预编译阶段，我收到错误：

Your bundle is complete! It was installed into ./vendor/bundle
       Cleaning up the bundler cache.
-----> 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

通常我可以通过添加来解决这个问题

config.assets.initialize_on_precompile = false

到config/initializers/production.rb，如Heroku docs 中所述。

不过，这一次似乎并没有解决问题。我还能尝试什么？

这是我的 Gemfile：

source 'https://rubygems.org'

gem 'rails', '3.2.7'

gem 'jquery-rails'
gem 'mini_magick'
gem 'fog'
gem 'carrierwave'
gem 'mail_form'
gem 'client_side_validations'
gem 'remotipart', '~> 1.0'
gem 'thin'

group :production do
  gem 'pg'
end

# Gems used only for assets and not required
# in production environments by default.
group :assets do
  gem 'sass-rails',   '~> 3.2.3'
  gem 'coffee-rails', '~> 3.2.1'

  # See https://github.com/sstephenson/execjs#readme for more supported runtimes
  # gem 'therubyracer', :platforms => :ruby

  gem 'uglifier', '>= 1.0.3'
end

group :development do
  gem 'heroku'
  gem 'mailcatcher'
end

group :development, :test do
  gem 'rspec-rails'
  gem 'sqlite3'
end

group :test do
  gem 'capybara-webkit'
  gem 'database_cleaner'
  gem 'factory_girl_rails'
  gem 'database_cleaner'
end

Answer 1

您是否尝试过 Heroku 实验室的这个修复？

https://devcenter.heroku.com/articles/labs-user-env-compile

最近才遇到，还没有机会尝试，但下次资产编译总是失败时会这样做......

这里还有一篇博文：

http://blog.genuitytech.com/2012/01/31/heroku-labs-and-user-env-compile/