我的应用程序运行正常，使用ruby 1.9.2 -p290，rails 3.0.10＆amp; refinerycms 1.0.9。 我已经使用acts_as_commentable gem来评论。我添加了一个新的gem并运行bundle install，之后我无法添加注释。抛出错误
undefined method `param_key' for "ModelName":ActiveModel::Name
我还评论了新添加的gem并运行bundle install。但问题仍然存在。以下是结果 捆绑秀
* abstract (1.0.0)
* actionmailer (3.0.10)
* actionpack (3.0.10)
* active_utils (2.0.1)
* activemerchant (1.39.2)
* activemodel (3.0.10)
* activerecord (3.0.10)
* activeresource (3.0.10)
* activesupport (3.0.10)
* acts-as-taggable-on (2.4.1)
* acts_as_commentable (4.0.0)
* acts_as_indexed (0.8.3)
* acts_as_list (0.1.9)
* addressable (2.3.5)
* after_load (0.0.1)
* ajaxful_rating (3.0.0.beta6)
* ansi (1.4.3)
* archive-tar-minitar (0.5.2)
* arel (2.0.10)
* awesome_nested_set (2.1.6)
* awesome_print (1.2.0)
* aws-s3 (0.6.3)
* babosa (0.3.11)
* bcrypt-ruby (3.1.2)
* browser (0.2.1)
* builder (2.1.2)
* bundler (1.3.5)
* capybara (1.1.4)
* capybara-webkit (0.12.1)
* childprocess (0.3.9)
* columnize (0.3.6)
* cucumber (1.3.8)
* cucumber-rails (1.0.6)
* database_cleaner (1.2.0)
* decent_exposure (2.3.0)
* devise (1.4.9)
* devise_invitable (0.6.0)
* diff-lcs (1.2.4)
* dragonfly (0.9.12)
* erubis (2.6.6)
* exception_notification (3.0.1)
* excon (0.27.6)
* factory_girl (4.2.0)
* factory_girl_rails (4.2.1)
* ffi (1.9.0)
* filters_spam (0.3)
* fog (1.16.0)
* formatador (0.2.4)
* friendly_id_globalize3 (3.2.1.6)
* fuubar (1.2.1)
* galetahub-simple_captcha (0.1.3)
* gherkin (2.12.2)
* globalize3 (0.3.0)
* hashr (0.0.22)
* httparty (0.11.0)
* i18n (0.5.0)
* jquery-rails (1.0.19)
* json (1.8.1)
* json_pure (1.8.1)
* kgio (2.8.1)
* launchy (2.3.0)
* linecache19 (0.5.12)
* mail (2.2.20)
* mime-types (1.25)
* mini_portile (0.5.1)
* money (5.0.0)
* multi_json (1.8.2)
* multi_test (0.0.2)
* multi_xml (0.5.5)
* mysql2 (0.2.20)
* net-scp (1.1.2)
* net-ssh (2.7.0)
* nokogiri (1.6.0)
* orm_adapter (0.0.7)
* paper_trail (2.7.2)
* pickle (0.4.11)
* polyglot (0.3.3)
* puma (2.6.0)
* pushmeup (0.1.2)
* rack (1.2.8)
* rack-cache (1.2)
* rack-mount (0.6.14)
* rack-rewrite (1.0.2)
* rack-test (0.5.7)
* rails (3.0.10)
* railties (3.0.10)
* raindrops (0.12.0)
* rake (10.1.0)
* rdoc (3.12.2)
* refinerycms (1.0.9)
* refinerycms-authentication (1.0.9)
* refinerycms-banners (1.0)
* refinerycms-base (1.0.9)
* refinerycms-blog (1.6.2)
* refinerycms-calendar (1.1.0)
* refinerycms-core (1.0.9)
* refinerycms-dashboard (1.0.9)
* refinerycms-generators (1.0.4)
* refinerycms-i18n (0.9.9.16)
* refinerycms-images (1.0.9)
* refinerycms-inquiries (1.0.1)
* refinerycms-memberships (1.0)
* refinerycms-news (1.2.0)
* refinerycms-newsletter_sponsers (1.0)
* refinerycms-search (0.9.8)
* refinerycms-settings (1.0.9)
* refinerycms-testing (1.0.9)
* rest-client (1.6.7)
* routing-filter (0.3.1)
* rspec (2.14.1)
* rspec-core (2.14.6)
* rspec-expectations (2.14.3)
* rspec-instafail (0.2.4)
* rspec-mocks (2.14.4)
* rspec-rails (2.14.0)
* ruby-debug-base19 (0.11.25)
* ruby-debug19 (0.11.6)
* ruby-hmac (0.4.0)
* ruby-progressbar (1.2.0)
* ruby_core_source (0.1.5)
* rubyzip (0.9.9)
* selenium-webdriver (2.35.1)
* sendgrid (1.2.0)
* seo_meta (1.1.1)
* shoulda-matchers (2.4.0)
* slim (2.0.1)
* spork (0.9.2)
* sqlite3 (1.3.8)
* temple (0.6.7)
* thor (0.14.6)
* tilt (1.4.1)
* tire (0.6.1)
* treetop (1.4.15)
* truncate_html (0.9.2)
* tzinfo (0.3.38)
* unicode (0.4.4)
* unicorn (4.4.0)
* warden (1.0.6)
* websocket (1.0.7)
* will_paginate (3.0.5)
* xml-simple (1.1.2)
* xpath (0.1.4)
以下是控制台上显示的错误消息
Started POST "/comments" for 192.168.2.170 at 2013-10-16 10:24:35 +0000
Processing by CommentsController#create as HTML
Parameters: {"utf8"=>"â", "authenticity_token"=>"Aql7Dz5cfx96Yi8JpBH5wIux+EGDdTGh98ksA97CbN4=", "comment"=>{"comment"=>"Test comment", "commentable_id"=>"1518", "commentable_type"=>"AuditProgram"}, "commit"=>"Create Comment", "locale"=>:en}
Exception, redirecting: undefined method `param_key' for "AuditProgram":ActiveModel::Name
Rendered public/404.html within layouts/application (313.7ms)
Completed 404 Not Found in 680ms (Views: 313.1ms | ActiveRecord: 121.3ms)
答案 0 :(得分：1)
尝试在模型/类中添加此行
扩展ActiveModel :: Naming
答案 1 :(得分：1)
通过降级 decent_exposure gem来解决问题。
由于 decent_exposure gem已升级到其最新版本而引发此问题，我的应用程序env不支持该版本，并且它也由refinerycms内部使用。
使用我的应用程序环境支持的版本将gem明确添加到 Gemfile 中。