Rails 3 库直到需要才加载 [英] Rails 3 library not loading until require

问题描述

我正在尝试在 rails 3 中加载 Tokbox SDK.我已将该库放在我的/lib 目录中，因此目前我的目录结构如下所示:

I'm trying to load the Tokbox SDK in rails 3. I've placed the library in my /lib directory, so currently my directory structure looks like so:

/lib
  opentok.rb
  /OpenTok
    Exceptions.rb
    OpenTokSDK.rb
    Session.rb

/lib
  opentok.rb
  /OpenTok
    Exceptions.rb
    OpenTokSDK.rb
    Session.rb

我正在使用 application.rb 中的以下内容加载/lib 目录中的所有文件:

I'm loading all files in the /lib directory using the following in application.rb:

config.autoload_paths += %W(#{config.root}/lib)
config.autoload_paths += Dir["#{config.root}/lib/**/"]

我在/lib 目录中的其他文件自动加载就好了，但是在我添加 require 'OpenTok' 之前，这个库不会加载:

Other files I have in the /lib directory are auto-loading just fine, but this library does not load until I add a require 'OpenTok':

ruby-1.9.2-p0 > OpenTok
NameError: uninitialized constant OpenTok
ruby-1.9.2-p0 > OpenTok::OpenTokSDK
NameError: uninitialized constant OpenTok
ruby-1.9.2-p0 > require 'OpenTok'
 => ["OpenTok"]
ruby-1.9.2-p0 > OpenTok
 => OpenTok
ruby-1.9.2-p0 > OpenTok::OpenTokSDK
 => OpenTok::OpenTokSDK 

在 Rails 3 中加载库的正确方法是什么?

What is the correct way to load the library in Rails 3?

推荐答案

自动加载器会将常量设置为蛇形大小写，因此OpenTok"将使自动加载器查找open_tok.rb"，而不是opentok.rb".尝试重命名 lib/opentok.rb，它应该可以正常工作.

The autoloader will snake case the constant, so "OpenTok" would make the autoloader look for "open_tok.rb", not "opentok.rb". Try renaming lib/opentok.rb and it should work fine.

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