OmniAuth 1.0：单击 user_omniauth_authorize_path(:facebook) 链接时出现 NoMethodError

Question

单击 user_omniauth_authorize_path(:facebook) 链接时遇到此问题：

Started GET "/users/auth/facebook" for 127.0.0.1 at 2012-02-24 10:57:03 +0200

    NoMethodError (undefined method `include?' for nil:NilClass):
      omniauth (1.0.2) lib/omniauth/strategy.rb:165:in `call!'
      omniauth (1.0.2) lib/omniauth/strategy.rb:148:in `call'
      omniauth (1.0.2) lib/omniauth/builder.rb:42:in `call'
      warden (1.1.1) lib/warden/manager.rb:35:in `block in call'
      warden (1.1.1) lib/warden/manager.rb:34:in `catch'
      warden (1.1.1) lib/warden/manager.rb:34:in `call'
      actionpack (3.2.1) lib/action_dispatch/middleware/best_standards_support.rb:17:in `call'
      rack (1.4.1) lib/rack/etag.rb:23:in `call'
      rack (1.4.1) lib/rack/conditionalget.rb:25:in `call'
      actionpack (3.2.1) lib/action_dispatch/middleware/head.rb:14:in `call'
      actionpack (3.2.1) lib/action_dispatch/middleware/params_parser.rb:21:in `call'
      actionpack (3.2.1) lib/action_dispatch/middleware/flash.rb:242:in `call'
      rack (1.4.1) lib/rack/session/abstract/id.rb:205:in `context'
      rack (1.4.1) lib/rack/session/abstract/id.rb:200:in `call'
      actionpack (3.2.1) lib/action_dispatch/middleware/cookies.rb:338:in `call'
      activerecord (3.2.1) lib/active_record/query_cache.rb:64:in `call'
      activerecord (3.2.1) lib/active_record/connection_adapters/abstract/connection_pool.rb:443:in `call'
      actionpack (3.2.1) lib/action_dispatch/middleware/callbacks.rb:28:in `block in call'
      activesupport (3.2.1) lib/active_support/callbacks.rb:405:in `_run__2667807547873405266__call__33580566203138325__callbacks'
      activesupport (3.2.1) lib/active_support/callbacks.rb:405:in `__run_callback'
      activesupport (3.2.1) lib/active_support/callbacks.rb:385:in `_run_call_callbacks'

我目前正在尝试迁移到将 OmniAuth 1.0 与omniauth-facebook gem 一起使用。所有这些东西都在 Rails 3.2.1 上运行。我正在关注这里的教程： https://github.com/plataformatec/devise/wiki /OmniAuth:-概述

现在我找不到任何与该教程中所做的不同的事情。当我点击页面上的 Facebook 登录按钮时，我仍然遇到了这个问题。

深入研究omniauth gem的strategy.rb，它在这一点上失败了：

return request_call if on_request_path? && OmniAuth.config.allowed_request_methods.include?(request.request_method.downcase.to_sym)

Answer 1

我刚刚将其添加到初始化文件中，它似乎解决了问题。

OmniAuth.config.allowed_request_methods = [:post, :get]

Answer 2

据我发现，该错误不在omniauth gem 中，而是在rack 中。至少 github 上的人是这么发现的。检查问题：

OmniAuth：https://github.com/intridea/omniauth/issues/568

和

机架：https://github.com/rack/rack/issues/322

当我从 gems 切换到查看存储库时，它开始工作：

gem 'rack', git: 'https://github.com/rack/rack.git'
gem 'omniauth', git: 'https://github.com/intridea/omniauth.git'