Question

我之前已多次安装过puma，从未遇到过这个问题。我按照heroku的说明逐字记录。我在里面创建了一个Procfile：

web: bundle exec puma -C config/puma.rb

这是配置文件puma.rb：

workers Integer(ENV['WEB_CONCURRENCY'] || 2)
threads_count = Integer(ENV['MAX_THREADS'] || 5)
threads threads_count, threads_count

preload_app!

rackup      DefaultRackup
port        ENV['PORT']     || 3000
environment ENV['RACK_ENV'] || 'development'

on_worker_boot do
  # Worker specific setup for Rails 4.1+
  # See: https://devcenter.heroku.com/articles/deploying-rails-applications-with-the-puma-web-server#on-worker-boot
  ActiveRecord::Base.establish_connection
end

当我通过运行rails s或rails s puma来启动服务器时，我得到

=> Booting Puma
=> Rails 4.2.0 application starting in development on http://localhost:3000
=> Run `rails server -h` for more startup options
=> Ctrl-C to shutdown server
Exiting
/Users/david/projects/abc/config/initializers/puma.rb:1:in `<top (required)>': undefined method `workers' for main:Object (NoMethodError)

发生了什么，我该如何解决？我在开发中使用sqlite3，在生产中使用postgresql但我在两种环境中都得到了相同的错误。我使用rails 4.2.0和ruby 2.2.0。

Answer 1

您的Gemfile中需要gem 'puma'

编辑：puma.rb不应位于initializers文件夹中，而应位于config文件夹中。谢谢Nicolai

Answer 2

puma.rb不应位于initializers文件夹中，而应位于config文件夹

之外

puma初始化程序不适用于rails 4.2

2 个答案: