查看了相关 active_support 关于 autoload 的相关解释和源码，然后自己试着用一下这个方法：

文件目录结构如下

demo/
  | - main/
  |      | - base.rb
  |      | - scoping.rb
  | - main.rb
  | - run.rb

代码如下：

#main.rb
require 'active_support/all'

ActiveSupport::Dependencies.autoload_paths.push('.', 'main')

module Main
  extend ActiveSupport::Autoload

  autoload :Base
  autoload :Scoping

end

#main/base.rb
module Main
  class Base
    include Scoping
  end
end

# main/scoping.rb
module Main
  module Scoping
    def hello
      "hello world"
    end
  end
end

# run.rb
require 'main'

b = Main::Base.new
p b.hello

当我在运行 ruby run.rb 时报错，提示信息为：

Traceback (most recent call last):
    7: from run.rb:1:in `<main>'
    6: from run.rb:1:in `require_relative'
    5: from  main.rb:19:in `<top (required)>'
    4: from /usr/local/lib/ruby/gems/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `require'
    3: from /usr/local/lib/ruby/gems/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:257:in `load_dependency'
    2: from /usr/local/lib/ruby/gems/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `block in require'
    1: from /usr/local/lib/ruby/site_ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
/usr/local/lib/ruby/site_ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require': cannot load such file -- main/base (LoadError)

我的理解是在 main.rb 中使用 ActiveSupport::Dependencies.autoload_paths.push('.', 'main') 将目录添加至 autoload_path 中，则使用 autoload 方法后，会在需要时自动加载 base.rb 和 scoping.rb。但是实际却加载失败了，请问是我理解错误，还是代码表达的时候写错了。该如何修正？