ruby-on-rails - rails : uninitialized constant just happen on production server

Question

我有一个放在 lib/network 中的类:

module NetworkApi
  class NetworkProxy
  end
end

然后在另一个类中，我引用了这个类:

  network_proxy = ::NetworkApi::NetworkProxy.new(params)

一切都在我的开发环境中正常运行，但是当我部署到服务器时，我在上面一行收到错误消息:

NameError: uninitialized constant NetworkApi::NetworkProxy

我不知道为什么会出现这个奇怪的错误。请告诉我为什么。

Answer 1

请注意 Rails 5 disables autoloading after booting the app in production .

来自链接的博客文章:

In the rare situation where our application still needs autoloading in the production environment, we can enable it by setting up enable_dependency_loading to true as follows:

# config/application.rb 

config.enable_dependency_loading = true
config.autoload_paths << Rails.root.join('lib')`