本文介绍了TrueClass的未定义方法`model_name'：DeviseConfirmations的类（Rails 4，devise）的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
在我的Rails应用程序中，为了在用户注册时将用户国家（使用Geocoder gem）保存到用户表中，并使用另一个
In my Rails app, in order to save user country (using Geocoder gem) into the User table when the user signs up, and using another SO question, I have changed something in my controllers/confirmations_controller.rb but am getting a serious error I don't understand nor manage to solve:
def after_sign_up_path_for(resource)
if Devise.allow_insecure_sign_in_after_confirmation
resource.update(user_country: request.location.country)
after_sign_in_path_for(resource)
else
resource.update(user_country: request.location.country)
root_path
end
end
有什么奇怪的是用户被保存在我的本地数据库上的一切都很好（包括我想要的用户countryas）。但是，随着我收到一个错误页面，并出现以下错误信息，但是有一些事情必须发生：
What's weird is that the user is saved with everything fine (including user countryas I wanted to have) on my local database. But then something must happen as I get an error page with the following error message:
undefined method `model_name' for TrueClass:Class
整个错误日志：
(0.8ms) COMMIT
(0.5ms) BEGIN
SQL (1.3ms) UPDATE "users" SET "remember_created_at" = $1, "updated_at" = $2 WHERE "users"."id" = 427 [["remember_created_at", 2014-06-24 10:52:32 UTC], ["updated_at", 2014-06-24 12:52:32 +0200]]
(0.7ms) COMMIT
(0.4ms) BEGIN
SQL (0.9ms) UPDATE "users" SET "last_sign_in_at" = $1, "current_sign_in_at" = $2, "last_sign_in_ip" = $3, "current_sign_in_ip" = $4, "sign_in_count" = $5, "updated_at" = $6 WHERE "users"."id" = 427 [["last_sign_in_at", 2014-06-24 10:52:32 UTC], ["current_sign_in_at", 2014-06-24 10:52:32 UTC], ["last_sign_in_ip", "24.193.83.1"], ["current_sign_in_ip", "24.193.83.1"], ["sign_in_count", 1], ["updated_at", 2014-06-24 12:52:32 +0200]]
(0.7ms) COMMIT
(0.4ms) BEGIN
User Exists (1.0ms) SELECT 1 AS one FROM "users" WHERE (LOWER("users"."email") = LOWER('[email protected]') AND "users"."id" != 427) LIMIT 1
SQL (1.3ms) UPDATE "users" SET "user_country" = $1, "updated_at" = $2 WHERE "users"."id" = 427 [["user_country", "United States"], ["updated_at", 2014-06-24 12:52:32 +0200]]
(0.7ms) COMMIT
Completed 500 Internal Server Error in 4984ms
NoMethodError - undefined method `model_name' for TrueClass:Class:
actionpack (4.0.5) lib/action_controller/model_naming.rb:9:in `model_name_from_record_or_class'
actionpack (4.0.5) lib/action_dispatch/routing/polymorphic_routes.rb:182:in `build_named_route_call'
actionpack (4.0.5) lib/action_dispatch/routing/polymorphic_routes.rb:120:in `polymorphic_url'
actionpack (4.0.5) lib/action_dispatch/routing/url_for.rb:159:in `url_for'
actionpack (4.0.5) lib/action_controller/metal/rendering.rb:68:in `_process_options'
actionpack (4.0.5) lib/action_controller/metal/streaming.rb:202:in `_process_options'
actionpack (4.0.5) lib/abstract_controller/rendering.rb:119:in `render_to_body'
actionpack (4.0.5) lib/action_controller/metal/rendering.rb:33:in `render_to_body'
actionpack (4.0.5) lib/action_controller/metal/renderers.rb:26:in `render_to_body'
actionpack (4.0.5) lib/abstract_controller/rendering.rb:97:in `render'
actionpack (4.0.5) lib/action_controller/metal/rendering.rb:16:in `render'
actionpack (4.0.5) lib/action_controller/metal/instrumentation.rb:41:in `block (2 levels) in render'
activesupport (4.0.5) lib/active_support/core_ext/benchmark.rb:12:in `block in ms'
/home/mreisner/.rvm/rubies/ruby-2.0.0-p451/lib/ruby/2.0.0/benchmark.rb:296:in `realtime'
activesupport (4.0.5) lib/active_support/core_ext/benchmark.rb:12:in `ms'
actionpack (4.0.5) lib/action_controller/metal/instrumentation.rb:41:in `block in render'
actionpack (4.0.5) lib/action_controller/metal/instrumentation.rb:84:in `cleanup_view_runtime'
activerecord (4.0.5) lib/active_record/railties/controller_runtime.rb:25:in `cleanup_view_runtime'
actionpack (4.0.5) lib/action_controller/metal/instrumentation.rb:40:in `render'
actionpack (4.0.5) lib/action_controller/metal/implicit_render.rb:10:in `default_render'
actionpack (4.0.5) lib/action_controller/metal/responder.rb:233:in `default_render'
actionpack (4.0.5) lib/action_controller/metal/responder.rb:161:in `to_html'
actionpack (4.0.5) lib/action_controller/metal/responder.rb:154:in `respond'
actionpack (4.0.5) lib/action_controller/metal/responder.rb:147:in `call'
actionpack (4.0.5) lib/action_controller/metal/mime_responds.rb:330:in `respond_with'
devise (3.2.4) app/controllers/devise/registrations_controller.rb:20:in `create'
actionpack (4.0.5) lib/action_controller/metal/implicit_render.rb:4:in `send_action'
actionpack (4.0.5) lib/abstract_controller/base.rb:189:in `process_action'
actionpack (4.0.5) lib/action_controller/metal/rendering.rb:10:in `process_action'
actionpack (4.0.5) lib/abstract_controller/callbacks.rb:18:in `block in process_action'
activesupport (4.0.5) lib/active_support/callbacks.rb:483:in `_run__1192109421260337467__process_action__callbacks'
activesupport (4.0.5) lib/active_support/callbacks.rb:80:in `run_callbacks'
actionpack (4.0.5) lib/abstract_controller/callbacks.rb:17:in `process_action'
actionpack (4.0.5) lib/action_controller/metal/rescue.rb:29:in `process_action'
actionpack (4.0.5) lib/action_controller/metal/instrumentation.rb:31:in `block in process_action'
activesupport (4.0.5) lib/active_support/notifications.rb:159:in `block in instrument'
activesupport (4.0.5) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
activesupport (4.0.5) lib/active_support/notifications.rb:159:in `instrument'
actionpack (4.0.5) lib/action_controller/metal/instrumentation.rb:30:in `process_action'
actionpack (4.0.5) lib/action_controller/metal/params_wrapper.rb:250:in `process_action'
activerecord (4.0.5) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
actionpack (4.0.5) lib/abstract_controller/base.rb:136:in `process'
actionpack (4.0.5) lib/abstract_controller/rendering.rb:44:in `process'
actionpack (4.0.5) lib/action_controller/metal.rb:195:in `dispatch'
actionpack (4.0.5) lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
actionpack (4.0.5) lib/action_controller/metal.rb:231:in `block in action'
actionpack (4.0.5) lib/action_dispatch/routing/route_set.rb:80:in `call'
actionpack (4.0.5) lib/action_dispatch/routing/route_set.rb:80:in `dispatch'
actionpack (4.0.5) lib/action_dispatch/routing/route_set.rb:48:in `call'
actionpack (4.0.5) lib/action_dispatch/routing/mapper.rb:44:in `call'
actionpack (4.0.5) lib/action_dispatch/journey/router.rb:71:in `block in call'
actionpack (4.0.5) lib/action_dispatch/journey/router.rb:59:in `each'
actionpack (4.0.5) lib/action_dispatch/journey/router.rb:59:in `call'
actionpack (4.0.5) lib/action_dispatch/routing/route_set.rb:674:in `call'
warden (1.2.3) lib/warden/manager.rb:35:in `block in call'
warden (1.2.3) lib/warden/manager.rb:34:in `catch'
warden (1.2.3) lib/warden/manager.rb:34:in `call'
rack (1.5.2) lib/rack/etag.rb:23:in `call'
rack (1.5.2) lib/rack/conditionalget.rb:35:in `call'
rack (1.5.2) lib/rack/head.rb:11:in `call'
actionpack (4.0.5) lib/action_dispatch/middleware/params_parser.rb:27:in `call'
actionpack (4.0.5) lib/action_dispatch/middleware/flash.rb:241:in `call'
rack (1.5.2) lib/rack/session/abstract/id.rb:225:in `context'
rack (1.5.2) lib/rack/session/abstract/id.rb:220:in `call'
actionpack (4.0.5) lib/action_dispatch/middleware/cookies.rb:486:in `call'
activerecord (4.0.5) lib/active_record/query_cache.rb:36:in `call'
activerecord (4.0.5) lib/active_record/connection_adapters/abstract/connection_pool.rb:626:in `call'
activerecord (4.0.5) lib/active_record/migration.rb:373:in `call'
actionpack (4.0.5) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
activesupport (4.0.5) lib/active_support/callbacks.rb:373:in `_run__3240580690818246217__call__callbacks'
activesupport (4.0.5) lib/active_support/callbacks.rb:80:in `run_callbacks'
actionpack (4.0.5) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
actionpack (4.0.5) lib/action_dispatch/middleware/reloader.rb:64:in `call'
actionpack (4.0.5) lib/action_dispatch/middleware/remote_ip.rb:76:in `call'
better_errors (1.1.0) lib/better_errors/middleware.rb:84:in `protected_app_call'
better_errors (1.1.0) lib/better_errors/middleware.rb:79:in `better_errors_call'
better_errors (1.1.0) lib/better_errors/middleware.rb:56:in `call'
actionpack (4.0.5) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
actionpack (4.0.5) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
railties (4.0.5) lib/rails/rack/logger.rb:38:in `call_app'
railties (4.0.5) lib/rails/rack/logger.rb:20:in `block in call'
activesupport (4.0.5) lib/active_support/tagged_logging.rb:68:in `block in tagged'
activesupport (4.0.5) lib/active_support/tagged_logging.rb:26:in `tagged'
activesupport (4.0.5) lib/active_support/tagged_logging.rb:68:in `tagged'
railties (4.0.5) lib/rails/rack/logger.rb:20:in `call'
quiet_assets (1.0.2) lib/quiet_assets.rb:18:in `call_with_quiet_assets'
actionpack (4.0.5) lib/action_dispatch/middleware/request_id.rb:21:in `call'
rack (1.5.2) lib/rack/methodoverride.rb:21:in `call'
rack (1.5.2) lib/rack/runtime.rb:17:in `call'
activesupport (4.0.5) lib/active_support/cache/strategy/local_cache.rb:83:in `call'
rack (1.5.2) lib/rack/lock.rb:17:in `call'
rack (1.5.2) lib/rack/sendfile.rb:112:in `call'
railties (4.0.5) lib/rails/engine.rb:511:in `call'
railties (4.0.5) lib/rails/application.rb:97:in `call'
rack (1.5.2) lib/rack/lock.rb:17:in `call'
rack (1.5.2) lib/rack/content_length.rb:14:in `call'
rack (1.5.2) lib/rack/handler/webrick.rb:60:in `service'
/home/mreisner/.rvm/rubies/ruby-2.0.0-p451/lib/ruby/2.0.0/webrick/httpserver.rb:138:in `service'
/home/mreisner/.rvm/rubies/ruby-2.0.0-p451/lib/ruby/2.0.0/webrick/httpserver.rb:94:in `run'
/home/mreisner/.rvm/rubies/ruby-2.0.0-p451/lib/ruby/2.0.0/webrick/server.rb:295:in `block in start_thread'
推荐答案
尝试这样做
def after_sign_up_path_for(resource)
if Devise.allow_insecure_sign_in_after_confirmation
resource.update(user_country: request.location.country)
super(resource)
else
resource.update(user_country: request.location.country)
root_path
end
end
这篇关于TrueClass的未定义方法`model_name'：DeviseConfirmations的类（Rails 4，devise）的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！