ruby-on-rails - omn​​iauth-facebook 命名空间跟踪

Question

我在omniauth-facebook/lib/omniauth/strategies/facebook.rb 看到了这段代码

require 'omniauth/strategies/oauth2'
require 'base64'
require 'openssl'
require 'rack/utils'

module OmniAuth
  module Strategies
    class Facebook < OmniAuth::Strategies::OAuth2
      ...
    end
  end
end

问题是命名空间“ OmniAuth::Strategies::OAuth2”在哪里，它是从哪里继承的class Facebook？

Answer 1

如果此代码运行良好，那么您Gemfile可能包含omniauth-oauth2gem。这是它的定义：https ://github.com/intridea/omniauth-oauth2/blob/master/lib/omniauth/strategies/oauth2.rb