Ruby on rails 未定义的方法`状态'；零级：零级

在尝试将控制器与其索引视图链接在一起时获取此信息

在控制器中使用此选项：

class FeedbackController < ApplicationController
  def index
  end
end

我明白了：

NoMethodError in FeedbackController#index

undefined method `status' for nil:NilClass

这个堆栈跟踪：

actionpack (3.2.8) lib/action_controller/metal/instrumentation.rb:31:in `block in process_action'
activesupport (3.2.8) lib/active_support/notifications.rb:123:in `block in instrument'
activesupport (3.2.8) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
activesupport (3.2.8) lib/active_support/notifications.rb:123:in `instrument'
actionpack (3.2.8) lib/action_controller/metal/instrumentation.rb:29:in `process_action'
actionpack (3.2.8) lib/action_controller/metal/params_wrapper.rb:207:in `process_action'
activerecord (3.2.8) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
actionpack (3.2.8) lib/abstract_controller/base.rb:121:in `process'
actionpack (3.2.8) lib/abstract_controller/rendering.rb:45:in `process'
actionpack (3.2.8) lib/action_controller/metal.rb:203:in `dispatch'
actionpack (3.2.8) lib/action_controller/metal/rack_delegation.rb:14:in `dispatch'
actionpack (3.2.8) lib/action_controller/metal.rb:246:in `block in action'
actionpack (3.2.8) lib/action_dispatch/routing/route_set.rb:73:in `call'
actionpack (3.2.8) lib/action_dispatch/routing/route_set.rb:73:in `dispatch'
actionpack (3.2.8) lib/action_dispatch/routing/route_set.rb:36:in `call'
journey (1.0.4) lib/journey/router.rb:68:in `block in call'
journey (1.0.4) lib/journey/router.rb:56:in `each'
journey (1.0.4) lib/journey/router.rb:56:in `call'
actionpack (3.2.8) lib/action_dispatch/routing/route_set.rb:600:in `call'
omniauth (1.1.1) lib/omniauth/strategy.rb:177:in `call!'
omniauth (1.1.1) lib/omniauth/strategy.rb:157:in `call'
omniauth (1.1.1) lib/omniauth/strategy.rb:177:in `call!'
omniauth (1.1.1) lib/omniauth/strategy.rb:157:in `call'
/Users/macbook/.rbenv/versions/1.9.3-rc1/lib/ruby/gems/1.9.1/bundler/gems/rack-facebook-signed-request-802e6f0820f1/lib/rack/facebook/signed_request.rb:32:in `call'
warden (1.2.1) lib/warden/manager.rb:35:in `block in call'
warden (1.2.1) lib/warden/manager.rb:34:in `catch'
warden (1.2.1) lib/warden/manager.rb:34:in `call'
actionpack (3.2.8) 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 (3.2.8) lib/action_dispatch/middleware/head.rb:14:in `call'
actionpack (3.2.8) lib/action_dispatch/middleware/params_parser.rb:21:in `call'
actionpack (3.2.8) 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 (3.2.8) lib/action_dispatch/middleware/cookies.rb:339:in `call'
activerecord (3.2.8) lib/active_record/query_cache.rb:64:in `call'
activerecord (3.2.8) lib/active_record/connection_adapters/abstract/connection_pool.rb:473:in `call'
actionpack (3.2.8) lib/action_dispatch/middleware/callbacks.rb:28:in `block in call'
activesupport (3.2.8) lib/active_support/callbacks.rb:405:in `_run__2909243921452486150__call__401413506945164242__callbacks'
activesupport (3.2.8) lib/active_support/callbacks.rb:405:in `__run_callback'
activesupport (3.2.8) lib/active_support/callbacks.rb:385:in `_run_call_callbacks'
activesupport (3.2.8) lib/active_support/callbacks.rb:81:in `run_callbacks'
actionpack (3.2.8) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
actionpack (3.2.8) lib/action_dispatch/middleware/reloader.rb:65:in `call'
actionpack (3.2.8) lib/action_dispatch/middleware/remote_ip.rb:31:in `call'
actionpack (3.2.8) lib/action_dispatch/middleware/debug_exceptions.rb:16:in `call'
actionpack (3.2.8) lib/action_dispatch/middleware/show_exceptions.rb:56:in `call'
railties (3.2.8) lib/rails/rack/logger.rb:26:in `call_app'
railties (3.2.8) lib/rails/rack/logger.rb:16:in `call'
actionpack (3.2.8) lib/action_dispatch/middleware/request_id.rb:22:in `call'
rack (1.4.1) lib/rack/methodoverride.rb:21:in `call'
rack (1.4.1) lib/rack/runtime.rb:17:in `call'
activesupport (3.2.8) lib/active_support/cache/strategy/local_cache.rb:72:in `call'
rack (1.4.1) lib/rack/lock.rb:15:in `call'
actionpack (3.2.8) lib/action_dispatch/middleware/static.rb:62:in `call'
railties (3.2.8) lib/rails/engine.rb:479:in `call'
railties (3.2.8) lib/rails/application.rb:223:in `call'
railties (3.2.8) lib/rails/railtie/configurable.rb:30:in `method_missing'
thin (1.5.0) lib/thin/connection.rb:81:in `block in pre_process'
thin (1.5.0) lib/thin/connection.rb:79:in `catch'
thin (1.5.0) lib/thin/connection.rb:79:in `pre_process'
thin (1.5.0) lib/thin/connection.rb:54:in `process'
thin (1.5.0) lib/thin/connection.rb:39:in `receive_data'
eventmachine (1.0.0) lib/eventmachine.rb:187:in `run_machine'
eventmachine (1.0.0) lib/eventmachine.rb:187:in `run'
thin (1.5.0) lib/thin/backends/base.rb:63:in `start'
thin (1.5.0) lib/thin/server.rb:159:in `start'
thin (1.5.0) lib/thin/controllers/controller.rb:86:in `start'
thin (1.5.0) lib/thin/runner.rb:187:in `run_command'
thin (1.5.0) lib/thin/runner.rb:152:in `run!'
thin (1.5.0) bin/thin:6:in `<top (required)>'
/Users/macbook/.rbenv/versions/1.9.3-rc1/lib/ruby/gems/1.9.1/bin/thin:19:in `load'
/Users/macbook/.rbenv/versions/1.9.3-rc1/lib/ruby/gems/1.9.1/bin/thin:19:in `<main>'

actionpack（3.2.8）lib/action\u controller/metal/instrumentation.rb:31:in'block-in-process\u action'
activesupport（3.2.8）lib/active_support/notifications.rb:123:in'block in instrument'
activesupport（3.2.8）lib/active_support/notifications/instrumenter.rb:20:in'instrument'
activesupport（3.2.8）lib/active_support/notifications.rb:123:in'instrument'
actionpack（3.2.8）lib/action\u controller/metal/instrumentation.rb:29:in'process\u action'
actionpack（3.2.8）lib/action_controller/metal/params_wrapper.rb:207:在“过程_动作”中
activerecord（3.2.8）lib/active\u record/railties/controller\u runtime.rb:18:in'process\u action'
actionpack（3.2.8）lib/abstract_controller/base.rb:121:正在进行中
actionpack（3.2.8）lib/abstract_controller/rendering.rb:45:in'process'
actionpack（3.2.8）lib/action_controller/metal.rb:203:in'dispatch'
actionpack（3.2.8）lib/action\u controller/metal/rack\u delegation.rb:14:in'dispatch'
actionpack（3.2.8）lib/action_controller/metal.rb:246:in“block in action”
actionpack（3.2.8）lib/action\u dispatch/routing/route\u set.rb:73:in'call'
actionpack（3.2.8）lib/action_dispatch/routing/route_set.rb:73:in'dispatch'
actionpack（3.2.8）lib/action\u dispatch/routing/route\u set.rb:36:in'call'
旅程（1.0.4）lib/travely/router.rb:68:in“呼叫阻塞”
旅程（1.0.4）lib/travely/router.rb:56:in'each'
旅程（1.0.4）lib/travely/router.rb:56:in'call'
actionpack（3.2.8）lib/action\u dispatch/routing/route\u set.rb:600:in'call'
omniauth（1.1.1）lib/omniauth/strategy.rb:177:in'call！'
omniauth（1.1.1）lib/omniauth/strategy.rb:157:in'call'
omniauth（1.1.1）lib/omniauth/strategy.rb:177:in'call！'
omniauth（1.1.1）lib/omniauth/strategy.rb:157:in'call'
/Users/macbook/.rbenv/versions/1.9.3-rc1/lib/ruby/gems/1.9.1/bundler/gems/rack-facebook-signed-request-802e6f0820f1/lib/rack/facebook/signed_request.rb:32:in'call'
典狱长（1.2.1）lib/warden/manager.rb:35:in'block in call'
典狱长（1.2.1）lib/warden/manager.rb:34:in'catch'
典狱长（1.2.1）lib/warden/manager.rb:34:in'call'
actionpack（3.2.8）lib/action\u dispatch/middleware/best\u standards\u support.rb:17:in'call'
机架（1.4.1）lib/rack/etag.rb:23:in'call'
rack（1.4.1）lib/rack/conditionalget.rb:25:in'call'
actionpack（3.2.8）lib/action\u dispatch/middleware/head.rb:14:in'call'
actionpack（3.2.8）lib/action_dispatch/middleware/params_parser.rb:21:in'call'
actionpack（3.2.8）lib/action\u dispatch/middleware/flash.rb:242:in'call'
框架（1.4.1）lib/rack/session/abstract/id.rb:205:在“上下文”中
机架（1.4.1）lib/rack/session/abstract/id.rb:200:in'call'
actionpack（3.2.8）lib/action\u dispatch/middleware/cookies.rb:339:in'call'
activerecord（3.2.8）lib/active\u record/query\u cache.rb:64:in'call'
activerecord（3.2.8）lib/active\u record/connection\u adapters/abstract/connection\u pool.rb:473:in'call'
actionpack（3.2.8）lib/action_dispatch/middleware/callbacks.rb:28:in'block in call'
activesupport（3.2.8）lib/active\u support/callbacks.rb:405:in``运行\uuuuu290924391452486150\uuuuu调用\uuuu4013506945164242\uuuu回调'
activesupport（3.2.8）lib/active\u support/callbacks.rb:405:in`\uu run\u callback'
activesupport（3.2.8）lib/active\u-support/callbacks.rb:385:in`_-run\u-call\u-callbacks'
activesupport（3.2.8）lib/active\u support/callbacks.rb:81:in'run\u callbacks'
actionpack（3.2.8）lib/action_dispatch/middleware/callbacks.rb:27:in'call'
actionpack（3.2.8）lib/action_dispatch/middleware/reloader.rb:65:in'call'
actionpack（3.2.8）lib/action\u dispatch/middleware/remote\u ip.rb:31:in'call'
actionpack（3.2.8）lib/action\u dispatch/middleware/debug\u exceptions.rb:16:in'call'
actionpack（3.2.8）lib/action\u dispatch/middleware/show\u exceptions.rb:56:in'call'
railties（3.2.8）lib/rails/rack/logger.rb:26:in'call_app'
railties（3.2.8）lib/rails/rack/logger.rb:16:in'call'
actionpack（3.2.8）lib/action\u dispatch/middleware/request\u id.rb:22:in'call'
rack（1.4.1）lib/rack/methodoverride.rb:21:in'call'
rack（1.4.1）lib/rack/runtime.rb:17:in'call'
activesupport（3.2.8）lib/active\u support/cache/strategy/local\u cache.rb:72:in'call'
机架（1.4.1）lib/rack/lock.rb:15:in'call'
actionpack（3.2.8）lib/action\u dispatch/middleware/static.rb:62:in'call'
railties（3.2.8）lib/rails/engine.rb:479:in'call'
railties（3.2.8）lib/rails/application.rb:223:in'call'
railties（3.2.8）lib/rails/railtie/configurable.rb:30:in'method_missing'
精简（1.5.0）lib/thin/connection.rb:81:in'block in pre_进程'
精简（1.5.0）lib/thin/connection.rb:79:in'catch'
精简（1.5.0）lib/thin/connection.rb:79:in'pre_进程'
精简（1.5.0）lib/thin/connection.rb:54:in'process'
精简（1.5.0）lib/thin/connection.rb:39:in'receive_data'
eventmachine（1.0.0）lib/eventmachine.rb:187:in'run_machine'
eventmachine（1.0.0）lib/eventmachine.rb:187:in'run'
精简（1.5.0）lib/thin/backends/base.rb:63:in'start'
精简（1.5.0）lib/thin/server.rb:159:in'start'
精简版（1.5.0）lib/thin/controllers/controller.rb:86:in'start'
thin（1.5.0）lib/thin/runner.rb:187:in'run_命令'
瘦（1.5.0）lib/thin/runner.rb:152:in'run！'
精简（1.5.0）存储箱/精简：6:in`'
/Users/macbook/.rbenv/versions/1.9.3-rc1/lib/ruby/gems/1.9.1/bin/thin:19:in'load'
/Users/macbook/.rbenv/versions/1.9.3-rc1/lib/ruby/gems/1.9.1/bin/thin:19:in`'

我曾尝试将控制器多元化以进行反馈，并适当地调整路由/文件名，但仍然会出现错误

---

还尝试使用

：as=>：feedback

，但仍然得到错误。如果文件夹中没有

/feedback/index.html.haml

，它将抛出正确的模板缺失页面，但即使模型、控制器和视图完全为空，它也会显示此状态错误。

解决了此问题。。。真奇怪

无法在控制器中定义响应方法。所以我有：

def response
end

---

而仅仅拥有它就会导致这个错误

（是否有

响应

满足

def response
end